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/* $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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142965682 |
sched_yield(); |
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71482841 |
} |
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