thr_mutexattr.c revision 149298 
1/*
2 * Copyright (c) 1996 Jeffrey Hsu <hsu@freebsd.org>.
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 John Birrell.
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 JOHN BIRRELL 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/libthr/thread/thr_mutexattr.c 149298 2005-08-19 21:31:42Z stefanf $
33 */
34
35/*
36 * Copyright (c) 1997 John Birrell <jb@cimlogic.com.au>.
37 * All rights reserved.
38 *
39 * Redistribution and use in source and binary forms, with or without
40 * modification, are permitted provided that the following conditions
41 * are met:
42 * 1. Redistributions of source code must retain the above copyright
43 *    notice, this list of conditions and the following disclaimer.
44 * 2. Redistributions in binary form must reproduce the above copyright
45 *    notice, this list of conditions and the following disclaimer in the
46 *    documentation and/or other materials provided with the distribution.
47 * 3. All advertising materials mentioning features or use of this software
48 *    must display the following acknowledgement:
49 *	This product includes software developed by John Birrell.
50 * 4. Neither the name of the author nor the names of any co-contributors
51 *    may be used to endorse or promote products derived from this software
52 *    without specific prior written permission.
53 *
54 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
57 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
64 * SUCH DAMAGE.
65 *
66 */
67
68#include <string.h>
69#include <stdlib.h>
70#include <errno.h>
71#include <pthread.h>
72#include "thr_private.h"
73
74__weak_reference(_pthread_mutexattr_init, pthread_mutexattr_init);
75__weak_reference(_pthread_mutexattr_setkind_np, pthread_mutexattr_setkind_np);
76__weak_reference(_pthread_mutexattr_getkind_np, pthread_mutexattr_getkind_np);
77__weak_reference(_pthread_mutexattr_gettype, pthread_mutexattr_gettype);
78__weak_reference(_pthread_mutexattr_settype, pthread_mutexattr_settype);
79__weak_reference(_pthread_mutexattr_destroy, pthread_mutexattr_destroy);
80
81int
82_pthread_mutexattr_init(pthread_mutexattr_t *attr)
83{
84	int ret;
85	pthread_mutexattr_t pattr;
86
87	if ((pattr = (pthread_mutexattr_t)
88	    malloc(sizeof(struct pthread_mutex_attr))) == NULL) {
89		ret = ENOMEM;
90	} else {
91		memcpy(pattr, &_pthread_mutexattr_default,
92		    sizeof(struct pthread_mutex_attr));
93		*attr = pattr;
94		ret = 0;
95	}
96	return (ret);
97}
98
99int
100_pthread_mutexattr_setkind_np(pthread_mutexattr_t *attr, int kind)
101{
102	int	ret;
103	if (attr == NULL || *attr == NULL) {
104		errno = EINVAL;
105		ret = -1;
106	} else {
107		(*attr)->m_type = kind;
108		ret = 0;
109	}
110	return(ret);
111}
112
113int
114_pthread_mutexattr_getkind_np(pthread_mutexattr_t attr)
115{
116	int	ret;
117	if (attr == NULL) {
118		errno = EINVAL;
119		ret = -1;
120	} else {
121		ret = attr->m_type;
122	}
123	return(ret);
124}
125
126int
127_pthread_mutexattr_settype(pthread_mutexattr_t *attr, int type)
128{
129	int	ret;
130	if (attr == NULL || *attr == NULL || type >= PTHREAD_MUTEX_TYPE_MAX) {
131		errno = EINVAL;
132		ret = -1;
133	} else {
134		(*attr)->m_type = type;
135		ret = 0;
136	}
137	return(ret);
138}
139
140int
141_pthread_mutexattr_gettype(pthread_mutexattr_t *attr, int *type)
142{
143	int	ret;
144
145	if (attr == NULL || *attr == NULL || (*attr)->m_type >=
146	    PTHREAD_MUTEX_TYPE_MAX) {
147		ret = EINVAL;
148	} else {
149		*type = (*attr)->m_type;
150		ret = 0;
151	}
152	return ret;
153}
154
155int
156_pthread_mutexattr_destroy(pthread_mutexattr_t *attr)
157{
158	int	ret;
159	if (attr == NULL || *attr == NULL) {
160		ret = EINVAL;
161	} else {
162		free(*attr);
163		*attr = NULL;
164		ret = 0;
165	}
166	return(ret);
167}
168