5 #include <internaltypes.h>
8 # define SEM_WAIT(s) sem_wait (s)
32 if (sem_init (&u.s, 0, 0) != 0)
34 puts ("sem_init failed");
37 #if __HAVE_64B_ATOMICS
38 if ((u.ns.data >> SEM_NWAITERS_SHIFT) != 0)
40 if (u.ns.nwaiters != 0)
43 puts ("nwaiters not initialized");
47 if (pthread_create (&th, NULL, tf, &u.s) != 0)
49 puts ("pthread_create failed");
55 if (pthread_cancel (th) != 0)
57 puts ("pthread_cancel failed");
62 if (pthread_join (th, &r) != 0)
64 puts ("pthread_join failed");
67 if (r != PTHREAD_CANCELED && --tries > 0)
69 /* Maybe we get the scheduling right the next time. */
74 #if __HAVE_64B_ATOMICS
75 if ((u.ns.data >> SEM_NWAITERS_SHIFT) != 0)
77 if (u.ns.nwaiters != 0)
80 puts ("nwaiters not reset");