Hi, Sergei!

I'm writing daemon plugin . I hava a problem and don't find soultion yet.

There is my code as below.

ex)plugin.cc

-----------------------------------------------------

pthread_handler_t monm_monitor(void *p)

{

     ....

     THD* thd;
      thd = new THD;
      thd->thread_stack= (char*) &thd;

     tables.init_one_table("performance_schema", 18, "events_statements_current", 25, "events_statements_current", TL_READ);
     open_and_lock_tables(thd, &tables, FALSE, MYSQL_LOCK_IGNORE_TIMEOUT);

      .....

}

static int monm_plugin_init(void *p __attribute__ ((unused)))

{

...

 pthread_create(&mon_thread, &attr, monm_monitor,(void *) ctx)!= 0)

....

}

-------------------------------------------------------------

In monm_monitor function,

THD* thd    cause server crash. so  I examined coredump.

#6  0x0000000000598752 in THD::THD (this=0x7f9b64000930, is_wsrep_applier=false) at /home/windfree/workspace/ws-mariadb/maria-mon/sql/sql_class.cc:1015

I don't know the reason of crash.

What I just want to is read events_statements_current's row by using internal interface in a daemon plugin.

Is there a another way ?

let me know the solution.

Regards,

Kyungnam.