1 /* $OpenBSD: uthread_rwlockattr.c,v 1.4 2000/01/04 22:34:24 alex Exp $ */
2 /*-
3 * Copyright (c) 1998 Alex Nash
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * $FreeBSD: uthread_rwlockattr.c,v 1.3 1999/08/28 00:03:45 peter Exp $
28 */
29
30 #ifdef _THREAD_SAFE
31 #include <errno.h>
32 #include <stdlib.h>
33
34 #include <pthread.h>
35 #include "pthread_private.h"
36
37 int
pthread_rwlockattr_destroy(pthread_rwlockattr_t * rwlockattr)38 pthread_rwlockattr_destroy (pthread_rwlockattr_t *rwlockattr)
39 {
40 pthread_rwlockattr_t prwlockattr;
41
42 if (rwlockattr == NULL)
43 return(EINVAL);
44
45 prwlockattr = *rwlockattr;
46
47 if (prwlockattr == NULL)
48 return(EINVAL);
49
50 free(prwlockattr);
51
52 return(0);
53 }
54
55 int
pthread_rwlockattr_getpshared(const pthread_rwlockattr_t * rwlockattr,int * pshared)56 pthread_rwlockattr_getpshared (const pthread_rwlockattr_t *rwlockattr,
57 int *pshared)
58 {
59 *pshared = (*rwlockattr)->pshared;
60
61 return(0);
62 }
63
64 int
pthread_rwlockattr_init(pthread_rwlockattr_t * rwlockattr)65 pthread_rwlockattr_init (pthread_rwlockattr_t *rwlockattr)
66 {
67 pthread_rwlockattr_t prwlockattr;
68
69 if (rwlockattr == NULL)
70 return(EINVAL);
71
72 prwlockattr = (pthread_rwlockattr_t)
73 malloc(sizeof(struct pthread_rwlockattr));
74
75 if (prwlockattr == NULL)
76 return(ENOMEM);
77
78 prwlockattr->pshared = PTHREAD_PROCESS_PRIVATE;
79 *rwlockattr = prwlockattr;
80
81 return(0);
82 }
83
84 int
pthread_rwlockattr_setpshared(pthread_rwlockattr_t * rwlockattr,int pshared)85 pthread_rwlockattr_setpshared (pthread_rwlockattr_t *rwlockattr,
86 int pshared)
87 {
88 /* only PTHREAD_PROCESS_PRIVATE is supported */
89 if (pshared != PTHREAD_PROCESS_PRIVATE)
90 return(EINVAL);
91
92 (*rwlockattr)->pshared = pshared;
93
94 return(0);
95 }
96
97 #endif /* _THREAD_SAFE */
98