1 /*
2 * mutex7.c
3 *
4 *
5 * --------------------------------------------------------------------------
6 *
7 * Pthreads-win32 - POSIX Threads Library for Win32
8 * Copyright(C) 1998 John E. Bossom
9 * Copyright(C) 1999,2005 Pthreads-win32 contributors
10 *
11 * Contact Email: rpj@callisto.canberra.edu.au
12 *
13 * The current list of contributors is contained
14 * in the file CONTRIBUTORS included with the source
15 * code distribution. The list can also be seen at the
16 * following World Wide Web location:
17 * http://sources.redhat.com/pthreads-win32/contributors.html
18 *
19 * This library is free software; you can redistribute it and/or
20 * modify it under the terms of the GNU Lesser General Public
21 * License as published by the Free Software Foundation; either
22 * version 2 of the License, or (at your option) any later version.
23 *
24 * This library is distributed in the hope that it will be useful,
25 * but WITHOUT ANY WARRANTY; without even the implied warranty of
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
27 * Lesser General Public License for more details.
28 *
29 * You should have received a copy of the GNU Lesser General Public
30 * License along with this library in the file COPYING.LIB;
31 * if not, write to the Free Software Foundation, Inc.,
32 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
33 *
34 * --------------------------------------------------------------------------
35 *
36 * Test the default (type not set) mutex type.
37 * Should be the same as PTHREAD_MUTEX_NORMAL.
38 * Thread locks then trylocks mutex (attempted recursive lock).
39 * The thread should lock first time and EBUSY second time.
40 *
41 * Depends on API functions:
42 * pthread_mutex_lock()
43 * pthread_mutex_trylock()
44 * pthread_mutex_unlock()
45 */
46
47 #include "test.h"
48
49 static int lockCount = 0;
50
51 static pthread_mutex_t mutex;
52
locker(void * arg)53 void * locker(void * arg)
54 {
55 assert(pthread_mutex_lock(&mutex) == 0);
56 lockCount++;
57 assert(pthread_mutex_trylock(&mutex) == EBUSY);
58 lockCount++;
59 assert(pthread_mutex_unlock(&mutex) == 0);
60 assert(pthread_mutex_unlock(&mutex) == EPERM);
61
62 return 0;
63 }
64
65 int
main()66 main()
67 {
68 pthread_t t;
69
70 assert(pthread_mutex_init(&mutex, NULL) == 0);
71
72 assert(pthread_create(&t, NULL, locker, NULL) == 0);
73
74 Sleep(1000);
75
76 assert(lockCount == 2);
77
78 exit(0);
79
80 /* Never reached */
81 return 0;
82 }
83