55 lines
1.6 KiB
C
55 lines
1.6 KiB
C
/* $OpenBSD: rthread_mutex_prio.c,v 1.2 2014/06/23 00:43:15 guenther Exp $ */
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/*
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* Copyright (c) 2011 Philip Guenther <guenther@openbsd.org>
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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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#include <errno.h>
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#include <pthread.h>
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#include "rthread.h"
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int
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pthread_mutex_getprioceiling(pthread_mutex_t *mutexp, int *prioceiling)
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{
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pthread_mutex_t mutex = *mutexp;
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if (mutex->prioceiling == -1)
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return (EINVAL);
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*prioceiling = mutex->prioceiling;
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return (0);
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}
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int
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pthread_mutex_setprioceiling(pthread_mutex_t *mutexp, int prioceiling,
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int *old_ceiling)
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{
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pthread_mutex_t mutex = *mutexp;
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int ret;
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if (mutex->prioceiling == -1 ||
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prioceiling < PTHREAD_MIN_PRIORITY ||
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prioceiling > PTHREAD_MAX_PRIORITY) {
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ret = EINVAL;
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} else if ((ret = pthread_mutex_lock(mutexp)) == 0) {
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*old_ceiling = mutex->prioceiling;
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mutex->prioceiling = prioceiling;
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pthread_mutex_unlock(mutexp);
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}
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return (ret);
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}
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