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/* 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, THD *thd= NULL);
/* 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 */
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