1 // commit 12e1e324683a1d381b7f15dd36c99b37dd44d940 2015-04-10
2 // robust mutex should work with detached threads too
9 #define TX(r,f,x) ( ((r)=(f))==x || (t_error(#f" failed: got %d \"%s\" want %d \"%s\"\n", r, strerror(r), x, strerror(x)), 0) )
10 #define T(r,f) TX(r,f,0)
12 static pthread_barrier_t barrier2;
14 static void *start_lock(void *arg)
16 pthread_mutex_lock(arg);
17 pthread_barrier_wait(&barrier2);
25 pthread_mutexattr_t mtx_a;
29 T(r, pthread_barrier_init(&barrier2, 0, 2));
30 T(r, pthread_mutexattr_init(&mtx_a));
31 T(r, pthread_mutexattr_setrobust(&mtx_a, PTHREAD_MUTEX_ROBUST));
32 T(r, pthread_mutexattr_setpshared(&mtx_a, PTHREAD_PROCESS_SHARED));
33 T(r, pthread_mutex_init(&mtx, &mtx_a));
34 T(r, pthread_create(&td, 0, start_lock, &mtx));
35 T(r, pthread_detach(td));
36 pthread_barrier_wait(&barrier2);
38 // enough time to ensure that the other thread is dead
39 clock_gettime(CLOCK_REALTIME, &ts);
40 ts.tv_nsec += 100*1000*1000;
41 if (ts.tv_nsec >= 1000*1000*1000) {
43 ts.tv_nsec -= 1000*1000*1000;
46 TX(r, pthread_mutex_timedlock(&mtx, &ts), EOWNERDEAD);