/*****************************************************************************

Copyright (c) 2011, 2011, 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, version 2.0,
as published by the Free Software Foundation.

This program is also distributed with certain software (including
but not limited to OpenSSL) that is licensed under separate terms,
as designated in a particular file or component or in included license
documentation.  The authors of MySQL hereby grant you an additional
permission to link the program and your derivative works with the
separately licensed software that they have included with MySQL.

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, version 2.0, 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 Street, Suite 500, Boston, MA 02110-1335 USA

*****************************************************************************/

/**************************************************//**
@file buf/buf0dump.h
Implements a buffer pool dump/load.

Created April 08, 2011 Vasil Dimov
*******************************************************/

#ifndef buf0dump_h
#define buf0dump_h

#include "univ.i"

/*****************************************************************//**
Wakes up the buffer pool dump/load thread and instructs it to start
a dump. This function is called by MySQL code via buffer_pool_dump_now()
and it should return immediately because the whole MySQL is frozen during
its execution. */
UNIV_INTERN
void
buf_dump_start();
/*============*/

/*****************************************************************//**
Wakes up the buffer pool dump/load thread and instructs it to start
a load. This function is called by MySQL code via buffer_pool_load_now()
and it should return immediately because the whole MySQL is frozen during
its execution. */
UNIV_INTERN
void
buf_load_start();
/*============*/

/*****************************************************************//**
Aborts a currently running buffer pool load. This function is called by
MySQL code via buffer_pool_load_abort() and it should return immediately
because the whole MySQL is frozen during its execution. */
UNIV_INTERN
void
buf_load_abort();
/*============*/

/*****************************************************************//**
This is the main thread for buffer pool dump/load. It waits for an
event and when waked up either performs a dump or load and sleeps
again.
@return this function does not return, it calls os_thread_exit() */
extern "C" UNIV_INTERN
os_thread_ret_t
DECLARE_THREAD(buf_dump_thread)(
/*============================*/
	void*	arg);				/*!< in: a dummy parameter
						required by os_thread_create */

#endif /* buf0dump_h */
