1 /*
2 * mutex4.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 * Thread A locks mutex - thread B tries to unlock.
37 *
38 * Depends on API functions:
39 * pthread_mutex_lock()
40 * pthread_mutex_trylock()
41 * pthread_mutex_unlock()
42 */
43
44 #include "test.h"
45
46 static int wasHere = 0;
47
48 static pthread_mutex_t mutex1;
49
unlocker(void * arg)50 void * unlocker(void * arg)
51 {
52 int expectedResult = (int) (size_t) arg;
53 int h;
54 wasHere++;
55 h = pthread_mutex_unlock(&mutex1);
56 printf("*** %d==%d\n\n", h, expectedResult); fflush(stdout);
57 assert(h == expectedResult);
58 wasHere++;
59 return NULL;
60 }
61
62 int
main()63 main()
64 {
65 pthread_t t;
66 pthread_mutexattr_t ma;
67
68 assert(pthread_mutexattr_init(&ma) == 0);
69
70 wasHere = 0;
71 assert(pthread_mutexattr_settype(&ma, PTHREAD_MUTEX_DEFAULT) == 0);
72 assert(pthread_mutex_init(&mutex1, &ma) == 0);
73 assert(pthread_mutex_lock(&mutex1) == 0);
74 /*
75 * NORMAL (fast) mutexes don't check ownership.
76 */
77 assert(pthread_create(&t, NULL, unlocker, (void *) 0) == 0);
78 assert(pthread_join(t, NULL) == 0);
79 assert(pthread_mutex_unlock(&mutex1) == EPERM);
80 assert(wasHere == 2);
81
82 wasHere = 0;
83 assert(pthread_mutexattr_settype(&ma, PTHREAD_MUTEX_NORMAL) == 0);
84 assert(pthread_mutex_destroy(&mutex1) == 0);
85 assert(pthread_mutex_init(&mutex1, &ma) == 0);
86 assert(pthread_mutex_lock(&mutex1) == 0);
87 /*
88 * NORMAL (fast) mutexes don't check ownership.
89 */
90 assert(pthread_create(&t, NULL, unlocker, (void *) 0) == 0);
91 assert(pthread_join(t, NULL) == 0);
92 assert(pthread_mutex_unlock(&mutex1) == EPERM);
93 assert(wasHere == 2);
94
95 wasHere = 0;
96 assert(pthread_mutexattr_settype(&ma, PTHREAD_MUTEX_ERRORCHECK) == 0);
97 assert(pthread_mutex_destroy(&mutex1) == 0);
98 assert(pthread_mutex_init(&mutex1, &ma) == 0);
99 assert(pthread_mutex_lock(&mutex1) == 0);
100 assert(pthread_create(&t, NULL, unlocker, (void *) EPERM) == 0);
101 assert(pthread_join(t, NULL) == 0);
102 assert(pthread_mutex_unlock(&mutex1) == 0);
103 assert(wasHere == 2);
104
105 wasHere = 0;
106 assert(pthread_mutexattr_settype(&ma, PTHREAD_MUTEX_RECURSIVE) == 0);
107 assert(pthread_mutex_destroy(&mutex1) == 0);
108 assert(pthread_mutex_init(&mutex1, &ma) == 0);
109 assert(pthread_mutex_lock(&mutex1) == 0);
110 assert(pthread_create(&t, NULL, unlocker, (void *) EPERM) == 0);
111 assert(pthread_join(t, NULL) == 0);
112 assert(pthread_mutex_unlock(&mutex1) == 0);
113 assert(wasHere == 2);
114
115 return 0;
116 }
117