nptl/tst-sem13.c

   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
   8
   9 static int
  10 do_test (void)
  11 {
  12   union
  13   {
  14     sem_t s;
  15     struct new_sem ns;
  16   } u;
  17
  18   if (sem_init (&u.s, 0, 0) != 0)
  19     {
  20       puts ("sem_init failed");
  21       return 1;
  22     }
  23
  24   struct timespec ts = { 0, 1000000001 };       /* Invalid.  */
  25   errno = 0;
  26   if (sem_timedwait (&u.s, &ts) >= 0)
  27     {
  28       puts ("sem_timedwait did not fail");
  29       return 1;
  30     }
  31   if (errno != EINVAL)
  32     {
  33       perror ("sem_timedwait did not fail with EINVAL");
  34       return 1;
  35     }
  36 #if __HAVE_64B_ATOMICS
  37   unsigned int nwaiters = (u.ns.data >> SEM_NWAITERS_SHIFT);
  38 #else
  39   unsigned int nwaiters = u.ns.nwaiters;
  40 #endif
  41   if (nwaiters != 0)
  42     {
  43       printf ("sem_timedwait modified nwaiters: %d\n", nwaiters);
  44       return 1;
  45     }
  46
  47   ts.tv_sec = /* Invalid.  */ -2;
  48   ts.tv_nsec = 0;
  49   errno = 0;
  50   if (sem_timedwait (&u.s, &ts) >= 0)
  51     {
  52       puts ("2nd sem_timedwait did not fail");
  53       return 1;
  54     }
  55   if (errno != ETIMEDOUT)
  56     {
  57       perror ("2nd sem_timedwait did not fail with ETIMEDOUT");
  58       return 1;
  59     }
  60 #if __HAVE_64B_ATOMICS
  61   nwaiters = (u.ns.data >> SEM_NWAITERS_SHIFT);
  62 #else
  63   nwaiters = u.ns.nwaiters;
  64 #endif
  65   if (nwaiters != 0)
  66     {
  67       printf ("2nd sem_timedwait modified nwaiters: %d\n", nwaiters);
  68       return 1;
  69     }
  70
  71   return 0;
  72 }
  73
  74 #define TEST_FUNCTION do_test ()
  75 #include "../test-skeleton.c"