oskit/oskit-20020317/threads/pthread_setschedparam.c

48 lines
1.4 KiB
C
Executable File

/*
* Copyright (c) 1996, 1998-2000 University of Utah and the Flux Group.
* All rights reserved.
*
* This file is part of the Flux OSKit. The OSKit is free software, also known
* as "open source;" you can redistribute it and/or modify it under the terms
* of the GNU General Public License (GPL), version 2, as published by the Free
* Software Foundation (FSF). To explore alternate licensing terms, contact
* the University of Utah at csl-dist@cs.utah.edu or +1-801-585-3271.
*
* The OSKit 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 GPL for more details. You should have
* received a copy of the GPL along with the OSKit; see the file COPYING. If
* not, write to the FSF, 59 Temple Place #330, Boston, MA 02111-1307, USA.
*/
/*
* Set priority of a thread.
*/
#include <threads/pthread_internal.h>
#include "pthread_schedconf.h"
int
pthread_setschedparam(pthread_t tid, int policy,
const struct sched_param *param)
{
pthread_thread_t *pthread;
int err;
if ((pthread = tidtothread(tid)) == NULL_THREADPTR)
return EINVAL;
if ((err = pthread->scheduler->check_schedstate(param)) != 0)
return err;
assert_preemption_enabled();
disable_preemption();
/*
* Pass this off to the scheduler module.
*/
pthread_sched_change_state(pthread, policy, param);
enable_preemption();
return 0;
}