thr_mutex_protocol.c revision 156611 
1/*
2 * Copyright (c) 1998 Daniel Eischen <eischen@vigrid.com>.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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.
19 *
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
30 * SUCH DAMAGE.
31 *
32 * $FreeBSD: head/lib/libkse/thread/thr_mutex_protocol.c 156611 2006-03-13 00:59:51Z deischen $
33 */
34#include <string.h>
35#include <stdlib.h>
36#include <errno.h>
37#include <pthread.h>
38#include "thr_private.h"
39
40LT10_COMPAT_PRIVATE(_pthread_mutexattr_getprotocol);
41LT10_COMPAT_DEFAULT(pthread_mutexattr_getprotocol);
42LT10_COMPAT_PRIVATE(_pthread_mutexattr_setprotocol);
43LT10_COMPAT_DEFAULT(pthread_mutexattr_setprotocol);
44
45__weak_reference(_pthread_mutexattr_getprotocol, pthread_mutexattr_getprotocol);
46__weak_reference(_pthread_mutexattr_setprotocol, pthread_mutexattr_setprotocol);
47
48int
49_pthread_mutexattr_getprotocol(pthread_mutexattr_t *mattr, int *protocol)
50{
51	int ret = 0;
52
53	if ((mattr == NULL) || (*mattr == NULL))
54		ret = EINVAL;
55	else
56		*protocol = (*mattr)->m_protocol;
57
58	return(ret);
59}
60
61int
62_pthread_mutexattr_setprotocol(pthread_mutexattr_t *mattr, int protocol)
63{
64	int ret = 0;
65
66	if ((mattr == NULL) || (*mattr == NULL) ||
67	    (protocol < PTHREAD_PRIO_NONE) || (protocol > PTHREAD_PRIO_PROTECT))
68		ret = EINVAL;
69	else {
70		(*mattr)->m_protocol = protocol;
71		(*mattr)->m_ceiling = THR_MAX_PRIORITY;
72	}
73	return(ret);
74}
75
76