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-------------------------------------------------------------------
revno: 2630.6.6
committer: Konstantin Osipov <konstantin@mysql.com>
branch nick: mysql-6.0-3726
timestamp: Tue 2008-05-27 16:15:44 +0400
message:
Implement code review fixes for WL#3726 "DDL locking for all
metadata objects": cleanup the code from share->mutex
acquisitions, which are now obsolete.
This commit is contained in:
Konstantin Osipov
2009-11-30 22:38:25 +03:00
parent b6c33a9a63
commit 511c68fbd4
7 changed files with 14 additions and 60 deletions
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15
sql/table.cc
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@ -320,7 +320,7 @@ TABLE_SHARE *alloc_table_share(TABLE_LIST *table_list, char *key,
share->free_tables.empty();
memcpy((char*) &share->mem_root, (char*) &mem_root, sizeof(mem_root));
pthread_mutex_init(&share->mutex, MY_MUTEX_INIT_FAST);
pthread_mutex_init(&share->LOCK_ha_data, MY_MUTEX_INIT_FAST);
}
DBUG_RETURN(share);
}
@ -411,18 +411,11 @@ void free_table_share(TABLE_SHARE *share)
DBUG_PRINT("enter", ("table: %s.%s", share->db.str, share->table_name.str));
DBUG_ASSERT(share->ref_count == 0);
/*
If someone is waiting for this to be deleted, inform it about this.
Don't do a delete until we know that no one is refering to this anymore.
*/
/* The mutex is initialized only for shares that are part of the TDC */
if (share->tmp_table == NO_TMP_TABLE)
{
/* No thread refers to this anymore */
pthread_mutex_unlock(&share->mutex);
pthread_mutex_destroy(&share->mutex);
}
pthread_mutex_destroy(&share->LOCK_ha_data);
my_hash_free(&share->name_hash);
plugin_unlock(NULL, share->db_plugin);
share->db_plugin= NULL;