1 /*
2 * pthread_mutex_init.c
3 *
4 * Description:
5 * This translation unit implements mutual exclusion (mutex) primitives.
6 *
7 * --------------------------------------------------------------------------
8 *
9 * Pthreads-embedded (PTE) - POSIX Threads Library for embedded systems
10 * Copyright(C) 2008 Jason Schmidlapp
11 *
12 * Contact Email: jschmidlapp@users.sourceforge.net
13 *
14 *
15 * Based upon Pthreads-win32 - POSIX Threads Library for Win32
16 * Copyright(C) 1998 John E. Bossom
17 * Copyright(C) 1999,2005 Pthreads-win32 contributors
18 *
19 * Contact Email: rpj@callisto.canberra.edu.au
20 *
21 * The original list of contributors to the Pthreads-win32 project
22 * is contained in the file CONTRIBUTORS.ptw32 included with the
23 * source code distribution. The list can also be seen at the
24 * following World Wide Web location:
25 * http://sources.redhat.com/pthreads-win32/contributors.html
26 *
27 * This library is free software; you can redistribute it and/or
28 * modify it under the terms of the GNU Lesser General Public
29 * License as published by the Free Software Foundation; either
30 * version 2 of the License, or (at your option) any later version.
31 *
32 * This library is distributed in the hope that it will be useful,
33 * but WITHOUT ANY WARRANTY; without even the implied warranty of
34 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
35 * Lesser General Public License for more details.
36 *
37 * You should have received a copy of the GNU Lesser General Public
38 * License along with this library in the file COPYING.LIB;
39 * if not, write to the Free Software Foundation, Inc.,
40 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
41 */
42
43 #include <stdio.h>
44 #include <stdlib.h>
45
46 #include "pthread.h"
47 #include "implement.h"
48
49
50 int
pthread_mutex_init(pthread_mutex_t * mutex,const pthread_mutexattr_t * attr)51 pthread_mutex_init (pthread_mutex_t * mutex, const pthread_mutexattr_t * attr)
52 {
53 int result = 0;
54 pthread_mutex_t mx;
55
56
57 if (mutex == NULL)
58 {
59 return EINVAL;
60 }
61
62 mx = (pthread_mutex_t) calloc (1, sizeof (*mx));
63
64 if (mx == NULL)
65 {
66 result = ENOMEM;
67 }
68 else
69 {
70 mx->lock_idx = 0;
71 mx->recursive_count = 0;
72 mx->kind = (attr == NULL || *attr == NULL
73 ? PTHREAD_MUTEX_DEFAULT : (*attr)->kind);
74 mx->ownerThread = NULL;
75
76 pte_osSemaphoreCreate(0,&mx->handle);
77
78 }
79
80 *mutex = mx;
81
82 return (result);
83 }
84