thr_barrierattr.c revision 119736 
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/libkse/thread/thr_barrierattr.c 119736 2003-09-04 14:06:43Z davidxu $
29 */
30
31#include <errno.h>
32#include <stdlib.h>
33#include <pthread.h>
34#include "thr_private.h"
35
36__weak_reference(_pthread_barrierattr_destroy, pthread_barrierattr_destroy);
37__weak_reference(_pthread_barrierattr_init, pthread_barrierattr_init);
38__weak_reference(_pthread_barrierattr_setpshared,
39	pthread_barrierattr_setpshared);
40__weak_reference(_pthread_barrierattr_getpshared,
41	pthread_barrierattr_getpshared);
42
43int
44_pthread_barrierattr_destroy(pthread_barrierattr_t *attr)
45{
46
47	if (attr == NULL || *attr == NULL)
48		return (EINVAL);
49
50	free(*attr);
51	return (0);
52}
53
54int
55_pthread_barrierattr_getpshared(const pthread_barrierattr_t *attr,
56	int *pshared)
57{
58
59	if (attr == NULL || *attr == NULL)
60		return (EINVAL);
61
62	*pshared = (*attr)->pshared;
63	return (0);
64}
65
66int
67_pthread_barrierattr_init(pthread_barrierattr_t *attr)
68{
69
70	if (attr == NULL)
71		return (EINVAL);
72
73	if ((*attr = malloc(sizeof(struct pthread_barrierattr))) == NULL)
74		return (ENOMEM);
75
76	(*attr)->pshared = PTHREAD_PROCESS_PRIVATE;
77	return (0);
78}
79
80int
81_pthread_barrierattr_setpshared(pthread_barrierattr_t *attr, int pshared)
82{
83
84	if (attr == NULL || *attr == NULL)
85		return (EINVAL);
86
87	/* Only PTHREAD_PROCESS_PRIVATE is supported. */
88	if (pshared != PTHREAD_PROCESS_PRIVATE)
89		return (EINVAL);
90
91	(*attr)->pshared = pshared;
92	return (0);
93}
94