xref: /freebsd/lib/libthr/thread/thr_barrierattr.c (revision e1e636193db45630c7881246d25902e57c43d24e)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 2003 David Xu <davidxu@freebsd.org>.
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice(s), this list of conditions and the following disclaimer as
12  *    the first lines of this file unmodified other than the possible
13  *    addition of one or more copyright notices.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice(s), this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
19  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21  * DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
22  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
24  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
25  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
28  * DAMAGE.
29  */
30 
31 #include "namespace.h"
32 #include <errno.h>
33 #include <stdlib.h>
34 #include <pthread.h>
35 #include "un-namespace.h"
36 
37 #include "thr_private.h"
38 
39 __weak_reference(_pthread_barrierattr_destroy, pthread_barrierattr_destroy);
40 __weak_reference(_pthread_barrierattr_init, pthread_barrierattr_init);
41 __weak_reference(_pthread_barrierattr_setpshared,
42 	pthread_barrierattr_setpshared);
43 __weak_reference(_pthread_barrierattr_getpshared,
44 	pthread_barrierattr_getpshared);
45 
46 int
47 _pthread_barrierattr_destroy(pthread_barrierattr_t *attr)
48 {
49 
50 	if (attr == NULL || *attr == NULL)
51 		return (EINVAL);
52 
53 	free(*attr);
54 	return (0);
55 }
56 
57 int
58 _pthread_barrierattr_getpshared(const pthread_barrierattr_t * __restrict attr,
59     int * __restrict pshared)
60 {
61 
62 	if (attr == NULL || *attr == NULL)
63 		return (EINVAL);
64 
65 	*pshared = (*attr)->pshared;
66 	return (0);
67 }
68 
69 int
70 _pthread_barrierattr_init(pthread_barrierattr_t *attr)
71 {
72 
73 	if (attr == NULL)
74 		return (EINVAL);
75 
76 	if ((*attr = malloc(sizeof(struct pthread_barrierattr))) == NULL)
77 		return (ENOMEM);
78 
79 	(*attr)->pshared = PTHREAD_PROCESS_PRIVATE;
80 	return (0);
81 }
82 
83 int
84 _pthread_barrierattr_setpshared(pthread_barrierattr_t *attr, int pshared)
85 {
86 
87 	if (attr == NULL || *attr == NULL ||
88 	    (pshared != PTHREAD_PROCESS_PRIVATE &&
89 	    pshared != PTHREAD_PROCESS_SHARED))
90 		return (EINVAL);
91 
92 	(*attr)->pshared = pshared;
93 	return (0);
94 }
95