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Create releng/7.2 from stable/7 in preparation for 7.2-RELEASE.
[FreeBSD/releng/7.2.git] / lib / libkse / thread / thr_barrierattr.c
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  * $FreeBSD$
29  */
30
31 #include <errno.h>
32 #include <stdlib.h>
33 #include <pthread.h>
34 #include "thr_private.h"
35
36 LT10_COMPAT_PRIVATE(_pthread_barrierattr_destroy);
37 LT10_COMPAT_DEFAULT(pthread_barrierattr_destroy);
38 LT10_COMPAT_PRIVATE(_pthread_barrierattr_init);
39 LT10_COMPAT_DEFAULT(pthread_barrierattr_init);
40 LT10_COMPAT_PRIVATE(_pthread_barrierattr_setpshared);
41 LT10_COMPAT_DEFAULT(pthread_barrierattr_setpshared);
42 LT10_COMPAT_PRIVATE(_pthread_barrierattr_getpshared);
43 LT10_COMPAT_DEFAULT(pthread_barrierattr_getpshared);
44
45 __weak_reference(_pthread_barrierattr_destroy, pthread_barrierattr_destroy);
46 __weak_reference(_pthread_barrierattr_init, pthread_barrierattr_init);
47 __weak_reference(_pthread_barrierattr_setpshared,
48         pthread_barrierattr_setpshared);
49 __weak_reference(_pthread_barrierattr_getpshared,
50         pthread_barrierattr_getpshared);
51
52 int
53 _pthread_barrierattr_destroy(pthread_barrierattr_t *attr)
54 {
55
56         if (attr == NULL || *attr == NULL)
57                 return (EINVAL);
58
59         free(*attr);
60         return (0);
61 }
62
63 int
64 _pthread_barrierattr_getpshared(const pthread_barrierattr_t *attr,
65         int *pshared)
66 {
67
68         if (attr == NULL || *attr == NULL)
69                 return (EINVAL);
70
71         *pshared = (*attr)->pshared;
72         return (0);
73 }
74
75 int
76 _pthread_barrierattr_init(pthread_barrierattr_t *attr)
77 {
78
79         if (attr == NULL)
80                 return (EINVAL);
81
82         if ((*attr = malloc(sizeof(struct pthread_barrierattr))) == NULL)
83                 return (ENOMEM);
84
85         (*attr)->pshared = PTHREAD_PROCESS_PRIVATE;
86         return (0);
87 }
88
89 int
90 _pthread_barrierattr_setpshared(pthread_barrierattr_t *attr, int pshared)
91 {
92
93         if (attr == NULL || *attr == NULL)
94                 return (EINVAL);
95
96         /* Only PTHREAD_PROCESS_PRIVATE is supported. */
97         if (pshared != PTHREAD_PROCESS_PRIVATE)
98                 return (EINVAL);
99
100         (*attr)->pshared = pshared;
101         return (0);
102 }