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------------------------------------------------------------
revno: 2630.8.3
committer: Dmitry Lenev <dlenev@mysql.com>
branch nick: mysql-6.0-3726-w4
timestamp: Thu 2008-06-05 10:48:36 +0400
message:
  WL#3726 "DDL locking for all metadata objects".

  After-review fixes in progress.

  Adjust some comments that were using old terminology
  (name locks instead of exclusive metadata locks), brought
  some of them up-to-date with current situation in code.
This commit is contained in:
Konstantin Osipov
2009-12-01 16:51:50 +03:00
parent f198e8bee9
commit 386b95dfef
8 changed files with 77 additions and 86 deletions
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7
sql/sql_show.cc
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@ -3271,7 +3271,8 @@ int get_all_tables(THD *thd, TABLE_LIST *tables, COND *cond)
/*
We should not introduce deadlocks even if we already have some
tables open and locked, since we won't lock tables which we will
open and will ignore possible name-locks for these tables.
open and will ignore pending exclusive metadata locks for these
tables by using high-priority requests for shared metadata locks.
*/
thd->reset_n_backup_open_tables_state(&open_tables_state_backup);
@ -7301,8 +7302,8 @@ bool show_create_trigger(THD *thd, const sp_name *trg_name)
Open the table by name in order to load Table_triggers_list object.
NOTE: there is race condition here -- the table can be dropped after
LOCK_open is released. It will be fixed later by introducing
acquire-shared-table-name-lock functionality.
LOCK_open is released. It will be fixed later by acquiring shared
metadata lock on trigger or table name.
*/
uint num_tables; /* NOTE: unused, only to pass to open_tables(). */