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Fixed lp:884101 "Crash in check_table_is_closed with concurrent workload"

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storage/myisam/mi_dbug.c:
  Added mutex to protect open table list while traversing it
This commit is contained in:
Michael Widenius 2011-11-04 10:14:25 +02:00
parent 6c27730adb
commit 5fe4a51cff
1 changed files with 3 additions and 0 deletions
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3
storage/myisam/mi_dbug.c
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@ -173,6 +173,7 @@ my_bool check_table_is_closed(const char *name, const char *where)
DBUG_ENTER("check_table_is_closed");
(void) fn_format(filename,name,"",MI_NAME_IEXT,4+16+32);
pthread_mutex_lock(&THR_LOCK_myisam);
for (pos=myisam_open_list ; pos ; pos=pos->next)
{
MI_INFO *info=(MI_INFO*) pos->data;
@ -183,10 +184,12 @@ my_bool check_table_is_closed(const char *name, const char *where)
{
fprintf(stderr,"Warning: Table: %s is open on %s\n", name,where);
DBUG_PRINT("warning",("Table: %s is open on %s", name,where));
pthread_mutex_unlock(&THR_LOCK_myisam);
DBUG_RETURN(1);
}
}
}
pthread_mutex_unlock(&THR_LOCK_myisam);
DBUG_RETURN(0);
}
#endif /* EXTRA_DEBUG */