1 /* $OpenBSD: rthread_rwlockattr.c,v 1.2 2012/02/15 04:58:42 guenther Exp $ */
2 /*
3 * Copyright (c) 2004,2005 Ted Unangst <tedu@openbsd.org>
4 * All Rights Reserved.
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18 /*
19 * rwlock attributes
20 */
21
22
23 #include <stdlib.h>
24 #include <unistd.h>
25 #include <errno.h>
26
27 #include <pthread.h>
28
29 #include "rthread.h"
30
31 int
pthread_rwlockattr_init(pthread_rwlockattr_t * attrp)32 pthread_rwlockattr_init(pthread_rwlockattr_t *attrp)
33 {
34 pthread_rwlockattr_t attr;
35
36 attr = calloc(1, sizeof(*attr));
37 if (!attr)
38 return (errno);
39 attr->pshared = PTHREAD_PROCESS_PRIVATE;
40 *attrp = attr;
41
42 return (0);
43 }
44
45 int
pthread_rwlockattr_destroy(pthread_rwlockattr_t * attrp)46 pthread_rwlockattr_destroy(pthread_rwlockattr_t *attrp)
47 {
48 free(*attrp);
49 *attrp = NULL;
50
51 return (0);
52 }
53
54 int
pthread_rwlockattr_getpshared(const pthread_rwlockattr_t * attrp,int * pshared)55 pthread_rwlockattr_getpshared(const pthread_rwlockattr_t *attrp, int *pshared)
56 {
57 *pshared = (*attrp)->pshared;
58
59 return (0);
60 }
61
62 int
pthread_rwlockattr_setpshared(pthread_rwlockattr_t * attrp,int pshared)63 pthread_rwlockattr_setpshared(pthread_rwlockattr_t *attrp, int pshared)
64 {
65 /* only PTHREAD_PROCESS_PRIVATE is supported */
66 if (pshared != PTHREAD_PROCESS_PRIVATE)
67 return (EINVAL);
68
69 (*attrp)->pshared = pshared;
70
71 return (0);
72 }
73