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MDEV-5864 - Reduce usage of LOCK_open: TABLE_SHARE::tdc.free_tables

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Let TABLE_SHARE::tdc.free_tables, TABLE_SHARE::tdc.all_tables,
TABLE_SHARE::tdc.flushed and corresponding invariants be protected by
per-share TABLE_SHARE::tdc.LOCK_table_share instead of global LOCK_open.
This commit is contained in:
Sergey Vojtovich 2014-03-20 11:11:13 +04:00
commit e4fde57712
16 changed files with 122 additions and 134 deletions
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8
storage/federated/ha_federated.cc
View file

@ -3119,14 +3119,6 @@ int ha_federated::real_connect()
String sql_query(buffer, sizeof(buffer), &my_charset_bin);
DBUG_ENTER("ha_federated::real_connect");
/*
Bug#25679
Ensure that we do not hold the LOCK_open mutex while attempting
to establish Federated connection to guard against a trivial
Denial of Service scenerio.
*/
mysql_mutex_assert_not_owner(&LOCK_open);
DBUG_ASSERT(mysql == NULL);
if (!(mysql= mysql_init(NULL)))