146 lines
3.0 KiB
C
146 lines
3.0 KiB
C
/* $OpenBSD: rthread_sched.c,v 1.14 2017/09/05 02:40:54 guenther Exp $ */
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/*
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* Copyright (c) 2004,2005 Ted Unangst <tedu@openbsd.org>
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* All Rights Reserved.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/*
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* scheduling routines
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*/
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#include <unistd.h>
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#include <signal.h>
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#include <errno.h>
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#include <pthread.h>
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#include <pthread_np.h>
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#include "rthread.h"
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int
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pthread_getschedparam(pthread_t thread, int *policy,
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struct sched_param *param)
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{
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if (!_threads_ready)
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_rthread_init();
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*policy = thread->attr.sched_policy;
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if (param)
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*param = thread->attr.sched_param;
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return (0);
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}
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int
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pthread_setschedparam(pthread_t thread, int policy,
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const struct sched_param *param)
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{
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if (!_threads_ready)
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_rthread_init();
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/* XXX return ENOTSUP for SCHED_{FIFO,RR}? */
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if (policy != SCHED_OTHER && policy != SCHED_FIFO &&
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policy != SCHED_RR)
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return (EINVAL);
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thread->attr.sched_policy = policy;
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if (param)
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thread->attr.sched_param = *param;
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return (0);
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}
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int
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pthread_attr_getschedparam(const pthread_attr_t *attrp,
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struct sched_param *param)
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{
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*param = (*attrp)->sched_param;
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return (0);
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}
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int
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pthread_attr_setschedparam(pthread_attr_t *attrp,
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const struct sched_param *param)
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{
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(*attrp)->sched_param = *param;
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return (0);
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}
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int
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pthread_attr_getschedpolicy(const pthread_attr_t *attrp, int *policy)
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{
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*policy = (*attrp)->sched_policy;
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return (0);
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}
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int
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pthread_attr_setschedpolicy(pthread_attr_t *attrp, int policy)
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{
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/* XXX return ENOTSUP for SCHED_{FIFO,RR}? */
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if (policy != SCHED_OTHER && policy != SCHED_FIFO &&
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policy != SCHED_RR)
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return (EINVAL);
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(*attrp)->sched_policy = policy;
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return (0);
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}
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int
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pthread_attr_getinheritsched(const pthread_attr_t *attrp, int *inherit)
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{
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*inherit = (*attrp)->sched_inherit;
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return (0);
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}
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int
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pthread_attr_setinheritsched(pthread_attr_t *attrp, int inherit)
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{
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if (inherit != PTHREAD_INHERIT_SCHED &&
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inherit != PTHREAD_EXPLICIT_SCHED)
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return (EINVAL);
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(*attrp)->sched_inherit = inherit;
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return (0);
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}
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int
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pthread_getprio(pthread_t thread)
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{
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if (!_threads_ready)
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_rthread_init();
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return (thread->attr.sched_param.sched_priority);
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}
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int
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pthread_setprio(pthread_t thread, int priority)
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{
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if (!_threads_ready)
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_rthread_init();
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thread->attr.sched_param.sched_priority = priority;
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return (0);
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}
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void
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pthread_yield(void)
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{
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sched_yield();
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}
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