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
31int
32pthread_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
45int
46pthread_rwlockattr_destroy(pthread_rwlockattr_t *attrp)
47{
48	free(*attrp);
49	*attrp = NULL;
50
51	return (0);
52}
53
54int
55pthread_rwlockattr_getpshared(const pthread_rwlockattr_t *attrp, int *pshared)
56{
57	*pshared = (*attrp)->pshared;
58
59	return (0);
60}
61
62int
63pthread_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