1 /*
2 * condvar_attr_destroy.c
3 *
4 * Description:
5 * This translation unit implements condition variables and their primitives.
6 *
7 *
8 * --------------------------------------------------------------------------
9 *
10 * Pthreads-win32 - POSIX Threads Library for Win32
11 * Copyright(C) 1998 John E. Bossom
12 * Copyright(C) 1999,2005 Pthreads-win32 contributors
13 *
14 * Contact Email: rpj@callisto.canberra.edu.au
15 *
16 * The current list of contributors is contained
17 * in the file CONTRIBUTORS included with the source
18 * code distribution. The list can also be seen at the
19 * following World Wide Web location:
20 * http://sources.redhat.com/pthreads-win32/contributors.html
21 *
22 * This library is free software; you can redistribute it and/or
23 * modify it under the terms of the GNU Lesser General Public
24 * License as published by the Free Software Foundation; either
25 * version 2 of the License, or (at your option) any later version.
26 *
27 * This library is distributed in the hope that it will be useful,
28 * but WITHOUT ANY WARRANTY; without even the implied warranty of
29 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
30 * Lesser General Public License for more details.
31 *
32 * You should have received a copy of the GNU Lesser General Public
33 * License along with this library in the file COPYING.LIB;
34 * if not, write to the Free Software Foundation, Inc.,
35 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
36 */
37
38 #include "pthread.h"
39 #include "implement.h"
40
41
42 int
pthread_condattr_destroy(pthread_condattr_t * attr)43 pthread_condattr_destroy (pthread_condattr_t * attr)
44 /*
45 * ------------------------------------------------------
46 * DOCPUBLIC
47 * Destroys a condition variable attributes object.
48 * The object can no longer be used.
49 *
50 * PARAMETERS
51 * attr
52 * pointer to an instance of pthread_condattr_t
53 *
54 *
55 * DESCRIPTION
56 * Destroys a condition variable attributes object.
57 * The object can no longer be used.
58 *
59 * NOTES:
60 * 1) Does not affect condition variables created
61 * using 'attr'
62 *
63 * RESULTS
64 * 0 successfully released attr,
65 * EINVAL 'attr' is invalid.
66 *
67 * ------------------------------------------------------
68 */
69 {
70 int result = 0;
71
72 if (attr == NULL || *attr == NULL)
73 {
74 result = EINVAL;
75 }
76 else
77 {
78 (void) free (*attr);
79
80 *attr = NULL;
81 result = 0;
82 }
83
84 return result;
85
86 } /* pthread_condattr_destroy */
87