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Diffstat (limited to '')
-rw-r--r-- | sql/lock.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/sql/lock.h b/sql/lock.h new file mode 100644 index 00000000..0b23ddd3 --- /dev/null +++ b/sql/lock.h @@ -0,0 +1,54 @@ +/* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; version 2 of the License. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */ + +#ifndef LOCK_INCLUDED +#define LOCK_INCLUDED + +#include "thr_lock.h" /* thr_lock_type */ +#include "mdl.h" + +// Forward declarations +struct TABLE; +struct TABLE_LIST; +class THD; +typedef struct st_mysql_lock MYSQL_LOCK; + + +MYSQL_LOCK *mysql_lock_tables(THD *thd, TABLE **table, uint count, uint flags); +bool mysql_lock_tables(THD *thd, MYSQL_LOCK *sql_lock, uint flags); +int mysql_unlock_tables(THD *thd, MYSQL_LOCK *sql_lock, bool free_lock); +int mysql_unlock_tables(THD *thd, MYSQL_LOCK *sql_lock); +int mysql_unlock_read_tables(THD *thd, MYSQL_LOCK *sql_lock); +int mysql_unlock_some_tables(THD *thd, TABLE **table,uint count, uint flag); +int mysql_lock_remove(THD *thd, MYSQL_LOCK *locked,TABLE *table); +bool mysql_lock_abort_for_thread(THD *thd, TABLE *table); +MYSQL_LOCK *mysql_lock_merge(MYSQL_LOCK *a,MYSQL_LOCK *b); +/* Lock based on name */ +bool lock_schema_name(THD *thd, const char *db); +/* Lock based on stored routine name */ +bool lock_object_name(THD *thd, MDL_key::enum_mdl_namespace mdl_type, + const char *db, const char *name); + +/* flags for get_lock_data */ +#define GET_LOCK_UNLOCK 0 +#define GET_LOCK_STORE_LOCKS 1 +#define GET_LOCK_ACTION_MASK 1 +#define GET_LOCK_ON_THD (1 << 1) +#define GET_LOCK_SKIP_SEQUENCES (1 << 2) + +MYSQL_LOCK *get_lock_data(THD *thd, TABLE **table_ptr, uint count, uint flags); +void reset_lock_data(MYSQL_LOCK *sql_lock, bool unlock); + +#endif /* LOCK_INCLUDED */ |