1  /* Timer test using the monotonic clock.  */
       2  
       3  #include <time.h>
       4  #include <unistd.h>
       5  
       6  #if defined CLOCK_MONOTONIC && defined _POSIX_MONOTONIC_CLOCK
       7  
       8  # define TEST_CLOCK	CLOCK_MONOTONIC
       9  # define TEST_CLOCK_MISSING(clock) \
      10    (setup_test () ? "CLOCK_MONOTONIC" : NULL)
      11  
      12  # include <stdio.h>
      13  
      14  static int
      15  setup_test (void)
      16  {
      17    if (sysconf (_SC_MONOTONIC_CLOCK) <= 0)
      18      return 1;
      19  
      20    /* The user-level timers implementation doesn't support CLOCK_MONOTONIC,
      21       even though sysconf claims it will.  */
      22    timer_t t;
      23    if (timer_create (TEST_CLOCK, NULL, &t) != 0)
      24      {
      25        printf ("timer_create: %m\n");
      26        return 1;
      27      }
      28    timer_delete (t);
      29  
      30    return 0;
      31  }
      32  
      33  # include "tst-timer4.c"
      34  
      35  #else
      36  # define TEST_FUNCTION	0
      37  # include "../test-skeleton.c"
      38  #endif