2 * Copyright (c) 1998 Daniel Eischen <eischen@vigrid.com>.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Daniel Eischen.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY DANIEL EISCHEN AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * $FreeBSD: src/lib/libc_r/uthread/uthread_mutex_prioceiling.c,v 1.3.2.1 2002/10/22 14:44:03 fjoe Exp $
33 * $DragonFly: src/lib/libc_r/uthread/uthread_mutex_prioceiling.c,v 1.2 2003/06/17 04:26:48 dillon Exp $
39 #include "pthread_private.h"
41 __weak_reference(_pthread_mutexattr_getprioceiling, pthread_mutexattr_getprioceiling);
42 __weak_reference(_pthread_mutexattr_setprioceiling, pthread_mutexattr_setprioceiling);
43 __weak_reference(_pthread_mutex_getprioceiling, pthread_mutex_getprioceiling);
44 __weak_reference(_pthread_mutex_setprioceiling, pthread_mutex_setprioceiling);
47 _pthread_mutexattr_getprioceiling(pthread_mutexattr_t *mattr, int *prioceiling)
51 if ((mattr == NULL) || (*mattr == NULL))
53 else if ((*mattr)->m_protocol != PTHREAD_PRIO_PROTECT)
56 *prioceiling = (*mattr)->m_ceiling;
62 _pthread_mutexattr_setprioceiling(pthread_mutexattr_t *mattr, int prioceiling)
66 if ((mattr == NULL) || (*mattr == NULL))
68 else if ((*mattr)->m_protocol != PTHREAD_PRIO_PROTECT)
71 (*mattr)->m_ceiling = prioceiling;
77 _pthread_mutex_getprioceiling(pthread_mutex_t *mutex,
82 if ((mutex == NULL) || (*mutex == NULL))
84 else if ((*mutex)->m_protocol != PTHREAD_PRIO_PROTECT)
87 ret = (*mutex)->m_prio;
93 _pthread_mutex_setprioceiling(pthread_mutex_t *mutex,
94 int prioceiling, int *old_ceiling)
98 if ((mutex == NULL) || (*mutex == NULL))
100 else if ((*mutex)->m_protocol != PTHREAD_PRIO_PROTECT)
103 /* Lock the mutex: */
104 if ((ret = pthread_mutex_lock(mutex)) == 0) {
105 /* Return the old ceiling and set the new ceiling: */
106 *old_ceiling = (*mutex)->m_prio;
107 (*mutex)->m_prio = prioceiling;
109 /* Unlock the mutex: */
110 ret = pthread_mutex_unlock(mutex);