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 #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>