thr_barrierattr.c revision 126000 
1/*-
2 * Copyright (c) 2004 Michael Telahun Makonnen <mtm@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 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/lib/libthr/thread/thr_barrierattr.c 126000 2004-02-19 13:51:52Z mtm $
27 */
28
29#include <pthread.h>
30#include <stdlib.h>
31
32#include "thr_private.h"
33
34__weak_reference(_pthread_barrierattr_destroy, pthread_barrierattr_destroy);
35__weak_reference(_pthread_barrierattr_init, pthread_barrierattr_init);
36__weak_reference(_pthread_barrierattr_getpshared,
37    pthread_barrierattr_getpshared);
38__weak_reference(_pthread_barrierattr_setpshared,
39    pthread_barrierattr_setpshared);
40
41int
42_pthread_barrierattr_destroy(pthread_barrierattr_t *attr)
43{
44	if (*attr == NULL)
45		return (EINVAL);
46	free(*attr);
47	*attr = NULL;
48	return (0);
49}
50
51int
52_pthread_barrierattr_init(pthread_barrierattr_t *attr)
53{
54	*attr =
55	    (pthread_barrierattr_t)malloc(sizeof(struct pthread_barrierattr));
56	if ((*attr) == NULL)
57		return (ENOMEM);
58	(*attr)->ba_pshared = PTHREAD_PROCESS_PRIVATE;
59	return (0);
60}
61
62int
63_pthread_barrierattr_getpshared(const pthread_barrierattr_t *attr, int *pshared)
64{
65	if (*attr == NULL)
66		return (EINVAL);
67	*pshared = (*attr)->ba_pshared;
68	return (0);
69}
70
71int
72_pthread_barrierattr_setpshared(pthread_barrierattr_t *attr, int pshared)
73{
74	if (*attr == NULL || (pshared != PTHREAD_PROCESS_PRIVATE &&
75	    pshared != PTHREAD_PROCESS_SHARED))
76		return (EINVAL);
77	(*attr)->ba_pshared = pshared;
78	return (0);
79}
80