1  #include <errno.h>
       2  #include <semaphore.h>
       3  #include <stdio.h>
       4  #include <unistd.h>
       5  #include <pthread.h>
       6  #include <internaltypes.h>
       7  #include <support/check.h>
       8  
       9  /* A bogus clock value that tells run_test to use sem_timedwait rather than
      10     sem_clockwait.  */
      11  #define CLOCK_USE_TIMEDWAIT (-1)
      12  
      13  typedef int (*waitfn_t)(sem_t *, struct timespec *);
      14  
      15  static void
      16  do_test_wait (waitfn_t waitfn, const char *fnname)
      17  {
      18    union
      19    {
      20      sem_t s;
      21      struct new_sem ns;
      22    } u;
      23  
      24    printf ("do_test_wait: %s\n", fnname);
      25  
      26    TEST_COMPARE (sem_init (&u.s, 0, 0), 0);
      27  
      28    struct timespec ts = { 0, 1000000001 };	/* Invalid.  */
      29    errno = 0;
      30    TEST_VERIFY_EXIT (waitfn (&u.s, &ts) < 0);
      31    TEST_COMPARE (errno, EINVAL);
      32  
      33  #if __HAVE_64B_ATOMICS
      34    unsigned int nwaiters = (u.ns.data >> SEM_NWAITERS_SHIFT);
      35  #else
      36    unsigned int nwaiters = u.ns.nwaiters;
      37  #endif
      38    TEST_COMPARE (nwaiters, 0);
      39  
      40    ts.tv_sec = /* Invalid.  */ -2;
      41    ts.tv_nsec = 0;
      42    errno = 0;
      43    TEST_VERIFY_EXIT (waitfn (&u.s, &ts) < 0);
      44    TEST_COMPARE (errno, ETIMEDOUT);
      45  #if __HAVE_64B_ATOMICS
      46    nwaiters = (u.ns.data >> SEM_NWAITERS_SHIFT);
      47  #else
      48    nwaiters = u.ns.nwaiters;
      49  #endif
      50    TEST_COMPARE (nwaiters, 0);
      51  }
      52  
      53  int test_sem_timedwait (sem_t *sem, struct timespec *ts)
      54  {
      55    return sem_timedwait (sem, ts);
      56  }
      57  
      58  int test_sem_clockwait_monotonic (sem_t *sem, struct timespec *ts)
      59  {
      60    return sem_clockwait (sem, CLOCK_MONOTONIC, ts);
      61  }
      62  
      63  int test_sem_clockwait_realtime (sem_t *sem, struct timespec *ts)
      64  {
      65    return sem_clockwait (sem, CLOCK_REALTIME, ts);
      66  }
      67  
      68  static int do_test (void)
      69  {
      70    do_test_wait (&test_sem_timedwait,
      71                  "sem_timedwait");
      72    do_test_wait (&test_sem_clockwait_monotonic,
      73                  "sem_clockwait(monotonic)");
      74    do_test_wait (&test_sem_clockwait_realtime,
      75                  "sem_clockwait(realtime)");
      76    return 0;
      77  }
      78  
      79  #include <support/test-driver.c>