thr_rwlockattr.c revision 338707 
1/*-
2 * Copyright (c) 1998 Alex Nash
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, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: stable/11/lib/libthr/thread/thr_rwlockattr.c 338707 2018-09-17 02:51:08Z pfg $");
29
30#include "namespace.h"
31#include <errno.h>
32#include <stdlib.h>
33#include <pthread.h>
34#include "un-namespace.h"
35
36#include "thr_private.h"
37
38__weak_reference(_pthread_rwlockattr_destroy, pthread_rwlockattr_destroy);
39__weak_reference(_pthread_rwlockattr_getpshared, pthread_rwlockattr_getpshared);
40__weak_reference(_pthread_rwlockattr_init, pthread_rwlockattr_init);
41__weak_reference(_pthread_rwlockattr_setpshared, pthread_rwlockattr_setpshared);
42
43int
44_pthread_rwlockattr_destroy(pthread_rwlockattr_t *rwlockattr)
45{
46	pthread_rwlockattr_t prwlockattr;
47
48	if (rwlockattr == NULL)
49		return (EINVAL);
50	prwlockattr = *rwlockattr;
51	if (prwlockattr == NULL)
52		return (EINVAL);
53	free(prwlockattr);
54	return (0);
55}
56
57int
58_pthread_rwlockattr_getpshared(
59    const pthread_rwlockattr_t * __restrict rwlockattr,
60    int * __restrict pshared)
61{
62
63	*pshared = (*rwlockattr)->pshared;
64	return (0);
65}
66
67int
68_pthread_rwlockattr_init(pthread_rwlockattr_t *rwlockattr)
69{
70	pthread_rwlockattr_t prwlockattr;
71
72	if (rwlockattr == NULL)
73		return (EINVAL);
74
75	prwlockattr = malloc(sizeof(struct pthread_rwlockattr));
76	if (prwlockattr == NULL)
77		return (ENOMEM);
78
79	prwlockattr->pshared = PTHREAD_PROCESS_PRIVATE;
80	*rwlockattr = prwlockattr;
81	return (0);
82}
83
84int
85_pthread_rwlockattr_setpshared(pthread_rwlockattr_t *rwlockattr, int pshared)
86{
87
88	if (pshared != PTHREAD_PROCESS_PRIVATE &&
89	    pshared != PTHREAD_PROCESS_SHARED)
90		return (EINVAL);
91	(*rwlockattr)->pshared = pshared;
92	return (0);
93}
94