thr_barrierattr.c revision 338707 
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
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD: stable/11/lib/libthr/thread/thr_barrierattr.c 338707 2018-09-17 02:51:08Z pfg $");
31
32#include "namespace.h"
33#include <errno.h>
34#include <stdlib.h>
35#include <pthread.h>
36#include "un-namespace.h"
37
38#include "thr_private.h"
39
40__weak_reference(_pthread_barrierattr_destroy, pthread_barrierattr_destroy);
41__weak_reference(_pthread_barrierattr_init, pthread_barrierattr_init);
42__weak_reference(_pthread_barrierattr_setpshared,
43	pthread_barrierattr_setpshared);
44__weak_reference(_pthread_barrierattr_getpshared,
45	pthread_barrierattr_getpshared);
46
47int
48_pthread_barrierattr_destroy(pthread_barrierattr_t *attr)
49{
50
51	if (attr == NULL || *attr == NULL)
52		return (EINVAL);
53
54	free(*attr);
55	return (0);
56}
57
58int
59_pthread_barrierattr_getpshared(const pthread_barrierattr_t * __restrict attr,
60    int * __restrict pshared)
61{
62
63	if (attr == NULL || *attr == NULL)
64		return (EINVAL);
65
66	*pshared = (*attr)->pshared;
67	return (0);
68}
69
70int
71_pthread_barrierattr_init(pthread_barrierattr_t *attr)
72{
73
74	if (attr == NULL)
75		return (EINVAL);
76
77	if ((*attr = malloc(sizeof(struct pthread_barrierattr))) == NULL)
78		return (ENOMEM);
79
80	(*attr)->pshared = PTHREAD_PROCESS_PRIVATE;
81	return (0);
82}
83
84int
85_pthread_barrierattr_setpshared(pthread_barrierattr_t *attr, int pshared)
86{
87
88	if (attr == NULL || *attr == NULL ||
89	    (pshared != PTHREAD_PROCESS_PRIVATE &&
90	    pshared != PTHREAD_PROCESS_SHARED))
91		return (EINVAL);
92
93	(*attr)->pshared = pshared;
94	return (0);
95}
96