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/* $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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} |