1/* $OpenBSD: rthread_mutex_prio.c,v 1.2 2014/06/23 00:43:15 guenther Exp $ */ 2/* 3 * Copyright (c) 2011 Philip Guenther <guenther@openbsd.org> 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 19#include <errno.h> 20 21#include <pthread.h> 22#include "rthread.h" 23 24int 25pthread_mutex_getprioceiling(pthread_mutex_t *mutexp, int *prioceiling) 26{ 27 pthread_mutex_t mutex = *mutexp; 28 29 if (mutex->prioceiling == -1) 30 return (EINVAL); 31 *prioceiling = mutex->prioceiling; 32 33 return (0); 34} 35 36int 37pthread_mutex_setprioceiling(pthread_mutex_t *mutexp, int prioceiling, 38 int *old_ceiling) 39{ 40 pthread_mutex_t mutex = *mutexp; 41 int ret; 42 43 if (mutex->prioceiling == -1 || 44 prioceiling < PTHREAD_MIN_PRIORITY || 45 prioceiling > PTHREAD_MAX_PRIORITY) { 46 ret = EINVAL; 47 } else if ((ret = pthread_mutex_lock(mutexp)) == 0) { 48 *old_ceiling = mutex->prioceiling; 49 mutex->prioceiling = prioceiling; 50 pthread_mutex_unlock(mutexp); 51 } 52 53 return (ret); 54} 55