thr_barrierattr.c revision 144518 
1/*
2 * Copyright (c) 2003 David Xu <davidxu@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(s), this list of conditions and the following disclaimer as
10 *    the first lines of this file unmodified other than the possible
11 *    addition of one or more copyright notices.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice(s), this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
23 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
26 * DAMAGE.
27 *
28 * $FreeBSD: head/lib/libthr/thread/thr_barrierattr.c 144518 2005-04-02 01:20:00Z davidxu $
29 */
30
31#include <errno.h>
32#include <stdlib.h>
33#include <pthread.h>
34
35#include "thr_private.h"
36
37__weak_reference(_pthread_barrierattr_destroy, pthread_barrierattr_destroy);
38__weak_reference(_pthread_barrierattr_init, pthread_barrierattr_init);
39__weak_reference(_pthread_barrierattr_setpshared,
40	pthread_barrierattr_setpshared);
41__weak_reference(_pthread_barrierattr_getpshared,
42	pthread_barrierattr_getpshared);
43
44int
45_pthread_barrierattr_destroy(pthread_barrierattr_t *attr)
46{
47
48	if (attr == NULL || *attr == NULL)
49		return (EINVAL);
50
51	free(*attr);
52	return (0);
53}
54
55int
56_pthread_barrierattr_getpshared(const pthread_barrierattr_t *attr,
57	int *pshared)
58{
59
60	if (attr == NULL || *attr == NULL)
61		return (EINVAL);
62
63	*pshared = (*attr)->pshared;
64	return (0);
65}
66
67int
68_pthread_barrierattr_init(pthread_barrierattr_t *attr)
69{
70
71	if (attr == NULL)
72		return (EINVAL);
73
74	if ((*attr = malloc(sizeof(struct pthread_barrierattr))) == NULL)
75		return (ENOMEM);
76
77	(*attr)->pshared = PTHREAD_PROCESS_PRIVATE;
78	return (0);
79}
80
81int
82_pthread_barrierattr_setpshared(pthread_barrierattr_t *attr, int pshared)
83{
84
85	if (attr == NULL || *attr == NULL)
86		return (EINVAL);
87
88	/* Only PTHREAD_PROCESS_PRIVATE is supported. */
89	if (pshared != PTHREAD_PROCESS_PRIVATE)
90		return (EINVAL);
91
92	(*attr)->pshared = pshared;
93	return (0);
94}
95