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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2008 Sun Microsystems
*
* 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 02110-1301 USA
*/
#ifndef DRIZZLED_LOCK_H
#define DRIZZLED_LOCK_H
#include <mysys/definitions.h>
class Session;
class Table;
class TableList;
typedef struct drizzled_lock_st DRIZZLE_LOCK;
DRIZZLE_LOCK *mysql_lock_tables(Session *session, Table **table, uint32_t count,
uint32_t flags, bool *need_reopen);
/* mysql_lock_tables() and open_table() flags bits */
#define DRIZZLE_LOCK_IGNORE_GLOBAL_READ_LOCK 0x0001
#define DRIZZLE_LOCK_IGNORE_FLUSH 0x0002
#define DRIZZLE_LOCK_NOTIFY_IF_NEED_REOPEN 0x0004
#define DRIZZLE_OPEN_TEMPORARY_ONLY 0x0008
void mysql_unlock_tables(Session *session, DRIZZLE_LOCK *sql_lock);
void mysql_unlock_read_tables(Session *session, DRIZZLE_LOCK *sql_lock);
void mysql_unlock_some_tables(Session *session, Table **table,uint32_t count);
void mysql_lock_remove(Session *session, DRIZZLE_LOCK *locked,Table *table,
bool always_unlock);
void mysql_lock_abort(Session *session, Table *table, bool upgrade_lock);
bool mysql_lock_abort_for_thread(Session *session, Table *table);
DRIZZLE_LOCK *mysql_lock_merge(DRIZZLE_LOCK *a,DRIZZLE_LOCK *b);
TableList *mysql_lock_have_duplicate(Session *session, TableList *needle,
TableList *haystack);
bool lock_global_read_lock(Session *session);
void unlock_global_read_lock(Session *session);
bool wait_if_global_read_lock(Session *session, bool abort_on_refresh,
bool is_not_commit);
void start_waiting_global_read_lock(Session *session);
bool make_global_read_lock_block_commit(Session *session);
bool set_protect_against_global_read_lock(void);
void unset_protect_against_global_read_lock(void);
void broadcast_refresh(void);
/* Lock based on name */
int lock_and_wait_for_table_name(Session *session, TableList *table_list);
int lock_table_name(Session *session, TableList *table_list, bool check_in_use);
void unlock_table_name(TableList *table_list);
bool wait_for_locked_table_names(Session *session, TableList *table_list);
bool lock_table_names(Session *session, TableList *table_list);
void unlock_table_names(TableList *table_list, TableList *last_table);
bool lock_table_names_exclusively(Session *session, TableList *table_list);
#endif /* DRIZZLED_LOCK_H */
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