/*
  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, 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 St, Fifth Floor, Boston, MA 02110-1301  USA
*/

#ifndef SERVICE_THREAD_SCHEDULER_INCLUDED
#define SERVICE_THREAD_SCHEDULER_INCLUDED

#ifdef __cplusplus
extern "C" {
#endif

struct scheduler_functions;

extern struct my_thread_scheduler_service {
  int (*set)(struct scheduler_functions *scheduler);
  int (*reset)();
} *my_thread_scheduler_service;

#ifdef MYSQL_DYNAMIC_PLUGIN

#define my_thread_scheduler_set(F) my_thread_scheduler_service->set((F))
#define my_thread_scheduler_reset() my_thread_scheduler_service->reset()

#else

/**
  Set the thread scheduler to use for the server.

  @param scheduler Pointer to scheduler callbacks to use.
  @retval 0 Scheduler installed correctly.
  @retval 1 Invalid value (NULL) used for scheduler.
*/
int my_thread_scheduler_set(struct scheduler_functions *scheduler);

/**
  Restore the previous thread scheduler.

  @note If no thread scheduler was installed previously with
  thd_set_thread_scheduler, this function will report an error.

  @retval 0 Scheduler installed correctly.
  @retval 1 No scheduler installed.
*/
int my_thread_scheduler_reset();

#endif

#ifdef __cplusplus
}
#endif

#endif /* SERVICE_THREAD_SCHEDULER_INCLUDED */
