2 /* Do stupid things with semaphores, and check that Thrcheck doesn't
3 fall over and does report errors appropriately. If nothing else
4 this just checks that the relevant functions are getting
7 /* This is pretty lame, because making the sem_ functions fail is
8 difficult. Not sure it's really worth having. */
14 #include <semaphore.h>
16 void start_watchdog ( void );
22 /* Do sem_init with huge initial count */
23 r= sem_init(&s1, 0, ~0);
25 /* initialise properly */
26 r= sem_init(&s1, 0, 0);
28 /* in glibc, sem_destroy is a no-op; making it fail is
31 /* Do 'wait' on a bogus semaphore. This should fail, but on glibc
33 memset(&s1, 0x55, sizeof(s1));
34 r= sem_wait(&s1); /* assert(r != 0); */
36 /* this only fails with glibc 2.7 and later. */
44 void* watchdog ( void* v )
47 fprintf(stderr, "watchdog timer expired - not a good sign\n");
51 void start_watchdog ( void )
55 r= pthread_create(&t, NULL, watchdog, NULL);