thr_barrierattr.c revision 285830 
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: releng/10.2/lib/libkse/thread/thr_barrierattr.c 174689 2007-12-16 23:29:57Z deischen $
29 */
30
31#include "namespace.h"
32#include <errno.h>
33#include <stdlib.h>
34#include <pthread.h>
35#include "un-namespace.h"
36#include "thr_private.h"
37
38__weak_reference(_pthread_barrierattr_destroy, pthread_barrierattr_destroy);
39__weak_reference(_pthread_barrierattr_init, pthread_barrierattr_init);
40__weak_reference(_pthread_barrierattr_setpshared,
41	pthread_barrierattr_setpshared);
42__weak_reference(_pthread_barrierattr_getpshared,
43	pthread_barrierattr_getpshared);
44
45int
46_pthread_barrierattr_destroy(pthread_barrierattr_t *attr)
47{
48
49	if (attr == NULL || *attr == NULL)
50		return (EINVAL);
51
52	free(*attr);
53	return (0);
54}
55
56int
57_pthread_barrierattr_getpshared(const pthread_barrierattr_t *attr,
58	int *pshared)
59{
60
61	if (attr == NULL || *attr == NULL)
62		return (EINVAL);
63
64	*pshared = (*attr)->pshared;
65	return (0);
66}
67
68int
69_pthread_barrierattr_init(pthread_barrierattr_t *attr)
70{
71
72	if (attr == NULL)
73		return (EINVAL);
74
75	if ((*attr = malloc(sizeof(struct pthread_barrierattr))) == NULL)
76		return (ENOMEM);
77
78	(*attr)->pshared = PTHREAD_PROCESS_PRIVATE;
79	return (0);
80}
81
82int
83_pthread_barrierattr_setpshared(pthread_barrierattr_t *attr, int pshared)
84{
85
86	if (attr == NULL || *attr == NULL)
87		return (EINVAL);
88
89	/* Only PTHREAD_PROCESS_PRIVATE is supported. */
90	if (pshared != PTHREAD_PROCESS_PRIVATE)
91		return (EINVAL);
92
93	(*attr)->pshared = pshared;
94	return (0);
95}
96