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
42int
43pthread_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