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/* $OpenBSD: rthread_sched.c,v 1.12 2012/03/22 15:26:04 kurt Exp $ */
/*
* Copyright (c) 2004,2005 Ted Unangst <tedu@openbsd.org>
* All Rights Reserved.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* scheduling routines
*/
#include <unistd.h>
#include <signal.h>
#include <errno.h>
#include <pthread.h>
#include <pthread_np.h>
#include "rthread.h"
int
pthread_getschedparam(pthread_t thread, int *policy,
struct sched_param *param)
{
*policy = thread->sched_policy;
if (param)
*param = thread->sched_param;
return (0);
}
int
pthread_setschedparam(pthread_t thread, int policy,
const struct sched_param *param)
{
/* XXX return ENOTSUP for SCHED_{FIFO,RR}? */
if (policy != SCHED_OTHER && policy != SCHED_FIFO &&
policy != SCHED_RR)
return (EINVAL);
thread->sched_policy = policy;
if (param)
thread->sched_param = *param;
return (0);
}
int
pthread_attr_getschedparam(const pthread_attr_t *attrp, struct sched_param *param)
{
*param = (*attrp)->sched_param;
return (0);
}
int
pthread_attr_setschedparam(pthread_attr_t *attrp, const struct sched_param *param)
{
(*attrp)->sched_param = *param;
return (0);
}
int
pthread_attr_getschedpolicy(const pthread_attr_t *attrp, int *policy)
{
*policy = (*attrp)->sched_policy;
return (0);
}
int
pthread_attr_setschedpolicy(pthread_attr_t *attrp, int policy)
{
/* XXX return ENOTSUP for SCHED_{FIFO,RR}? */
if (policy != SCHED_OTHER && policy != SCHED_FIFO &&
policy != SCHED_RR)
return (EINVAL);
(*attrp)->sched_policy = policy;
return (0);
}
int
pthread_attr_getinheritsched(const pthread_attr_t *attrp, int *inherit)
{
*inherit = (*attrp)->sched_inherit;
return (0);
}
int
pthread_attr_setinheritsched(pthread_attr_t *attrp, int inherit)
{
if (inherit != PTHREAD_INHERIT_SCHED &&
inherit != PTHREAD_EXPLICIT_SCHED)
return (EINVAL);
(*attrp)->sched_inherit = inherit;
return (0);
}
int
pthread_getprio(pthread_t thread)
{
return (thread->sched_param.sched_priority);
}
int
pthread_setprio(pthread_t thread, int priority)
{
thread->sched_param.sched_priority = priority;
return (0);
}
void
pthread_yield(void)
{
sched_yield();
}
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