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Fixed a deadlock problem when using LOCK TABLE in one thread and DROP TABLE in another

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sql/lock.cc:
  Added functions to handle list of table name locks
sql/mysql_priv.h:
  Added functions to handle list of named locks
sql/sql_rename.cc:
  Use new general table name lock functions
sql/sql_table.cc:
  Require table name locks when doing drop table.
  This fixed a deadlock problem when using LOCK TABLE in one thread and DROP TABLE in another
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unknown
2003-03-03 20:42:49 +02:00
parent 391bc11a21
commit 374ea106f5
4 changed files with 94 additions and 28 deletions
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3
sql/mysql_priv.h
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@ -594,6 +594,9 @@ MYSQL_LOCK *mysql_lock_merge(MYSQL_LOCK *a,MYSQL_LOCK *b);
int lock_table_name(THD *thd, TABLE_LIST *table_list);
void unlock_table_name(THD *thd, TABLE_LIST *table_list);
bool wait_for_locked_table_names(THD *thd, TABLE_LIST *table_list);
bool lock_table_names(THD *thd, TABLE_LIST *table_list);
void unlock_table_names(THD *thd, TABLE_LIST *table_list,
TABLE_LIST *last_table= 0);
/* old unireg functions */