2 /* This is the most trivial test I could think of that involves
3 barriers. If H fails to notice the pthread_barrier_wait call then
4 it will report a race. Correct behaviour is not to report a race
15 pthread_barrier_t bar;
17 void* child_fn ( void* arg )
19 long r, n = (long)arg;
23 r = pthread_barrier_wait(&bar);
24 assert(r == 0 || r == PTHREAD_BARRIER_SERIAL_THREAD);
28 sleep(1); /* ensure both threads get to this point before
40 r = pthread_barrier_init(&bar, NULL, NTHR);
43 for (i = 0; i < NTHR; i++) {
44 r = pthread_create(&thr[i], NULL, child_fn, (void*)i);
48 for (i = 0; i < NTHR; i++) {
49 r = pthread_join(thr[i], NULL);
53 r = pthread_barrier_destroy(&bar); assert(!r);
55 printf("x = %d\n", x);