thr_mutex_protocol.c revision 44963 
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 */
33#include <string.h>
34#include <stdlib.h>
35#include <errno.h>
36#ifdef _THREAD_SAFE
37#include <pthread.h>
38#include "pthread_private.h"
39
40int
41pthread_mutexattr_getprotocol(pthread_mutexattr_t *mattr, int *protocol)
42{
43	int ret = 0;
44
45	if ((mattr == NULL) || (*mattr == NULL))
46		ret = EINVAL;
47	else
48		*protocol = (*mattr)->m_protocol;
49
50	return(ret);
51}
52
53int
54pthread_mutexattr_setprotocol(pthread_mutexattr_t *mattr, int protocol)
55{
56	int ret = 0;
57
58	if ((mattr == NULL) || (*mattr == NULL) ||
59	    (protocol < PTHREAD_PRIO_NONE) || (protocol > PTHREAD_PRIO_PROTECT))
60		ret = EINVAL;
61	else {
62		(*mattr)->m_protocol = protocol;
63		(*mattr)->m_ceiling = PTHREAD_MAX_PRIORITY;
64	}
65	return(ret);
66}
67
68#endif
69