1 /*
2 * Test program for verifying whether pthread cleanup handlers are invoked
3 * correctly.
4 */
5
6
7 #include <stdbool.h>
8 #include <stdio.h>
9 #include <unistd.h>
10 #include <pthread.h>
11 #include <stdlib.h>
12
13
14 static pthread_mutex_t s_mutex;
15
16
cleanup_handler(void * param)17 static void cleanup_handler(void* param)
18 {
19 fprintf(stderr, "Cleanup handler has been called.\n");
20 pthread_mutex_unlock(&s_mutex);
21 }
22
f(void * p)23 static void* f(void *p)
24 {
25 if (pthread_mutex_lock(&s_mutex) != 0)
26 {
27 fprintf(stderr, "pthread_mutex_lock()\n");
28 exit(1);
29 }
30
31 pthread_cleanup_push(cleanup_handler, NULL);
32 pthread_exit(0);
33 pthread_cleanup_pop(true);
34 }
35
36
main()37 int main()
38 {
39 pthread_t pt1, pt2;
40
41 // Make sure the program exits in case a deadlock has been triggered.
42 alarm(20);
43
44 if (pthread_mutex_init(&s_mutex, NULL) != 0)
45 {
46 fprintf(stderr, "pthread_mutex_init()\n");
47 exit(1);
48 }
49 if (pthread_create(&pt1, NULL, f, NULL) != 0)
50 {
51 fprintf(stderr, "pthread_create()\n");
52 exit(1);
53 }
54 if (pthread_create(&pt2, NULL, f, NULL) != 0)
55 {
56 fprintf(stderr, "pthread_create()\n");
57 exit(1);
58 }
59
60 pthread_join(pt1, 0);
61 pthread_join(pt2, 0);
62
63 fprintf(stderr, "Test succeeded.\n");
64
65 return 0;
66 }
67