mariadb/libservices/thd_wait_service.c

/*
  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

#include <service_versions.h>
SERVICE_VERSION *thd_wait_service= (void*)VERSION_thd_wait;
WL#5363: Thread Pool Service Interface In order to allow thread schedulers to be dynamically loaded, it is necessary to make the following changes to the server: - Two new service interfaces - Modifications to InnoDB to inform the thread scheduler of state changes. - Changes to the VIO subsystem for checking if data is available on a socket. - Elimination of remains of the old thread pool implementation. The two new service interfaces introduces are: my_thread_scheduler A service interface to register a thread scheduler. thd_wait A service interface to inform thread scheduler that the thread is about to start waiting. In addition, the patch adds code that: - Add a call to thd_wait for table locks in mysys thd_lock.c by introducing a set function that can be used to set a callback to be used when waiting on a lock and resuming from waiting. - Calling the mysys set function from the server to set the callbacks correctly. 2010-06-07 16:01:39 +02:00			`/*`
			`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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA`
			`*/`

			`#include <service_versions.h>`
			`SERVICE_VERSION thd_wait_service= (void)VERSION_thd_wait;`