/*****************************************************************************\
 *  sched_plugin.h - Define scheduler plugin functions.
 *****************************************************************************
 *  Copyright (C) 2004-2006 The Regents of the University of California.
 *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
 *  Written by Jay Windley <jwindley@lnxi.com>
 *  CODE-OCEC-09-009. All rights reserved.
 *
 *  This file is part of SLURM, a resource management program.
 *  For details, see <http://slurm.schedmd.com/>.
 *  Please also read the included file: DISCLAIMER.
 *
 *  SLURM 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; either version 2 of the License, or (at your option)
 *  any later version.
 *
 *  In addition, as a special exception, the copyright holders give permission
 *  to link the code of portions of this program with the OpenSSL library under
 *  certain conditions as described in each individual source file, and
 *  distribute linked combinations including the two. You must obey the GNU
 *  General Public License in all respects for all of the code used other than
 *  OpenSSL. If you modify file(s) with this exception, you may extend this
 *  exception to your version of the file(s), but you are not obligated to do
 *  so. If you do not wish to do so, delete this exception statement from your
 *  version.  If you delete this exception statement from all source files in
 *  the program, then also delete it here.
 *
 *  SLURM 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 SLURM; if not, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA.
\*****************************************************************************/

#ifndef __SLURM_CONTROLLER_SCHED_PLUGIN_API_H__
#define __SLURM_CONTROLLER_SCHED_PLUGIN_API_H__

#include "slurm/slurm.h"
#include "src/slurmctld/slurmctld.h"

/*
 * Initialize the external scheduler adapter.
 *
 * Returns a SLURM errno.
 */
int slurm_sched_init( void );

/*
 * Terminate external scheduler, free memory.
 *
 * Returns a SLURM errno.
 */
extern int slurm_sched_fini(void);

/*
 **************************************************************************
 *                          P L U G I N   C A L L S                       *
 **************************************************************************
 */

/*
 * Perform reconfig, re-read any configuration files
 */
int slurm_sched_g_reconfig( void );

/*
 * For passive schedulers, invoke a scheduling pass.
 */
int slurm_sched_g_schedule( void );

/*
 * Note the successful allocation of resources to a job.
 */
int slurm_sched_g_newalloc( struct job_record *job_ptr );

/*
 * Note the successful release of resources to a job.
 */
int slurm_sched_g_freealloc( struct job_record *job_ptr );

/*
 * Supply the initial SLURM priority for a newly-submitted job.
 */
uint32_t slurm_sched_g_initial_priority( uint32_t max_prio,
				       struct job_record *job_ptr );

/*
 * Requeue a job
 */
void slurm_sched_g_requeue( struct job_record *job_ptr, char *reason );

/*
 * Note that some job is pending.
 */
void slurm_sched_g_job_is_pending( void );

/*
 * Note that some partition state change happened.
 */
void slurm_sched_g_partition_change( void );

/*
 * Return any plugin-specific error number
 */
int slurm_sched_g_get_errno( void );

/*
 * Return any plugin-specific error description
 */
char *slurm_sched_g_strerror( int errnum );

/*
 * Return any plugin-specific configuration information
 * Caller must xfree return value
 */
char *slurm_sched_g_get_conf( void );

#endif /*__SLURM_CONTROLLER_SCHED_PLUGIN_API_H__*/