1 /*
2 * pthread_mutexattr_destroy.c
3 *
4 * Description:
5 * This translation unit implements mutual exclusion (mutex) primitives.
6 *
7 * --------------------------------------------------------------------------
8 *
9 * Pthreads-win32 - POSIX Threads Library for Win32
10 * Copyright(C) 1998 John E. Bossom
11 * Copyright(C) 1999,2005 Pthreads-win32 contributors
12 *
13 * Contact Email: rpj@callisto.canberra.edu.au
14 *
15 * The current list of contributors is contained
16 * in the file CONTRIBUTORS included with the source
17 * code distribution. The list can also be seen at the
18 * following World Wide Web location:
19 * http://sources.redhat.com/pthreads-win32/contributors.html
20 *
21 * This library is free software; you can redistribute it and/or
22 * modify it under the terms of the GNU Lesser General Public
23 * License as published by the Free Software Foundation; either
24 * version 2 of the License, or (at your option) any later version.
25 *
26 * This library is distributed in the hope that it will be useful,
27 * but WITHOUT ANY WARRANTY; without even the implied warranty of
28 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
29 * Lesser General Public License for more details.
30 *
31 * You should have received a copy of the GNU Lesser General Public
32 * License along with this library in the file COPYING.LIB;
33 * if not, write to the Free Software Foundation, Inc.,
34 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
35 */
36
37 #include "pthread.h"
38 #include "implement.h"
39
40
41 int
pthread_mutexattr_destroy(pthread_mutexattr_t * attr)42 pthread_mutexattr_destroy (pthread_mutexattr_t * attr)
43 /*
44 * ------------------------------------------------------
45 * DOCPUBLIC
46 * Destroys a mutex attributes object. The object can
47 * no longer be used.
48 *
49 * PARAMETERS
50 * attr
51 * pointer to an instance of pthread_mutexattr_t
52 *
53 *
54 * DESCRIPTION
55 * Destroys a mutex attributes object. The object can
56 * no longer be used.
57 *
58 * NOTES:
59 * 1) Does not affect mutexes created using 'attr'
60 *
61 * RESULTS
62 * 0 successfully released attr,
63 * EINVAL 'attr' is invalid.
64 *
65 * ------------------------------------------------------
66 */
67 {
68 int result = 0;
69
70 if (attr == NULL || *attr == NULL)
71 {
72 result = EINVAL;
73 }
74 else
75 {
76 pthread_mutexattr_t ma = *attr;
77
78 *attr = NULL;
79 free (ma);
80 }
81
82 return (result);
83 } /* pthread_mutexattr_destroy */
84