thr_mutexattr.c revision 151608 
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 151608 2005-10-24 05:16:41Z davidxu $
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__weak_reference(_pthread_mutexattr_getpshared, pthread_mutexattr_getpshared);
81__weak_reference(_pthread_mutexattr_setpshared, pthread_mutexattr_setpshared);
82
83int
84_pthread_mutexattr_init(pthread_mutexattr_t *attr)
85{
86	int ret;
87	pthread_mutexattr_t pattr;
88
89	if ((pattr = (pthread_mutexattr_t)
90	    malloc(sizeof(struct pthread_mutex_attr))) == NULL) {
91		ret = ENOMEM;
92	} else {
93		memcpy(pattr, &_pthread_mutexattr_default,
94		    sizeof(struct pthread_mutex_attr));
95		*attr = pattr;
96		ret = 0;
97	}
98	return (ret);
99}
100
101int
102_pthread_mutexattr_setkind_np(pthread_mutexattr_t *attr, int kind)
103{
104	int	ret;
105	if (attr == NULL || *attr == NULL) {
106		errno = EINVAL;
107		ret = -1;
108	} else {
109		(*attr)->m_type = kind;
110		ret = 0;
111	}
112	return(ret);
113}
114
115int
116_pthread_mutexattr_getkind_np(pthread_mutexattr_t attr)
117{
118	int	ret;
119	if (attr == NULL) {
120		errno = EINVAL;
121		ret = -1;
122	} else {
123		ret = attr->m_type;
124	}
125	return(ret);
126}
127
128int
129_pthread_mutexattr_settype(pthread_mutexattr_t *attr, int type)
130{
131	int	ret;
132	if (attr == NULL || *attr == NULL || type >= PTHREAD_MUTEX_TYPE_MAX) {
133		errno = EINVAL;
134		ret = -1;
135	} else {
136		(*attr)->m_type = type;
137		ret = 0;
138	}
139	return(ret);
140}
141
142int
143_pthread_mutexattr_gettype(pthread_mutexattr_t *attr, int *type)
144{
145	int	ret;
146
147	if (attr == NULL || *attr == NULL || (*attr)->m_type >=
148	    PTHREAD_MUTEX_TYPE_MAX) {
149		ret = EINVAL;
150	} else {
151		*type = (*attr)->m_type;
152		ret = 0;
153	}
154	return ret;
155}
156
157int
158_pthread_mutexattr_destroy(pthread_mutexattr_t *attr)
159{
160	int	ret;
161	if (attr == NULL || *attr == NULL) {
162		ret = EINVAL;
163	} else {
164		free(*attr);
165		*attr = NULL;
166		ret = 0;
167	}
168	return(ret);
169}
170
171int
172_pthread_mutexattr_getpshared(const pthread_mutexattr_t *attr,
173	int *pshared)
174{
175
176	if (attr == NULL || *attr == NULL)
177		return (EINVAL);
178
179	*pshared = PTHREAD_PROCESS_PRIVATE;
180	return (0);
181}
182
183int
184_pthread_mutexattr_setpshared(pthread_mutexattr_t *attr, int pshared)
185{
186
187	if (attr == NULL || *attr == NULL)
188		return (EINVAL);
189
190	/* Only PTHREAD_PROCESS_PRIVATE is supported. */
191	if (pshared != PTHREAD_PROCESS_PRIVATE)
192		return (EINVAL);
193
194	return (0);
195}
196