86 lines
1.3 KiB
C
86 lines
1.3 KiB
C
#include <semaphore.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <pthread.h>
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#include <internaltypes.h>
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#ifndef SEM_WAIT
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# define SEM_WAIT(s) sem_wait (s)
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#endif
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static void *
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tf (void *arg)
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{
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#ifdef PREPARE
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PREPARE
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#endif
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SEM_WAIT (arg);
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return NULL;
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}
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int
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main (void)
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{
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int tries = 5;
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pthread_t th;
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union
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{
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sem_t s;
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struct new_sem ns;
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} u;
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again:
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if (sem_init (&u.s, 0, 0) != 0)
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{
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puts ("sem_init failed");
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return 1;
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}
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#if __HAVE_64B_ATOMICS
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if ((u.ns.data >> SEM_NWAITERS_SHIFT) != 0)
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#else
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if (u.ns.nwaiters != 0)
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#endif
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{
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puts ("nwaiters not initialized");
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return 1;
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}
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if (pthread_create (&th, NULL, tf, &u.s) != 0)
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{
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puts ("pthread_create failed");
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return 1;
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}
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sleep (1);
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if (pthread_cancel (th) != 0)
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{
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puts ("pthread_cancel failed");
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return 1;
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}
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void *r;
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if (pthread_join (th, &r) != 0)
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{
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puts ("pthread_join failed");
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return 1;
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}
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if (r != PTHREAD_CANCELED && --tries > 0)
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{
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/* Maybe we get the scheduling right the next time. */
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sem_destroy (&u.s);
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goto again;
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}
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#if __HAVE_64B_ATOMICS
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if ((u.ns.data >> SEM_NWAITERS_SHIFT) != 0)
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#else
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if (u.ns.nwaiters != 0)
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#endif
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{
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puts ("nwaiters not reset");
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return 1;
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}
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return 0;
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}
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