launchd/testing/missed-EVFILT_TIMER.c

   1 #include <sys/types.h>
   2 #include <sys/event.h>
   3 #include <sys/time.h>
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <assert.h>
   7
   8 void
   9 test5225889(int first, int second)
  10 {
  11         struct timeval tvs, tve, tvd;
  12         struct timespec timeout = { 30, 0 };
  13         struct kevent kev;
  14         int r, kq = kqueue();
  15
  16         fprintf(stdout, "First timer %i being updated to %i.\n", first, second);
  17
  18         assert(kq != -1);
  19
  20         EV_SET(&kev, 0, EVFILT_TIMER, EV_ADD|EV_ONESHOT, NOTE_SECONDS, first, NULL);
  21         r = kevent(kq, &kev, 1, NULL, 0, NULL);
  22         assert(r != -1);
  23
  24         EV_SET(&kev, 0, EVFILT_TIMER, EV_ADD|EV_ONESHOT, NOTE_SECONDS, second, NULL);
  25         r = kevent(kq, &kev, 1, NULL, 0, NULL);
  26         assert(r != -1);
  27
  28         gettimeofday(&tvs, NULL);
  29         r = kevent(kq, NULL, 0, &kev, 1, &timeout);
  30         gettimeofday(&tve, NULL);
  31
  32         timersub(&tve, &tvs, &tvd);
  33
  34         fprintf(stdout, "Waited %lu seconds for kevent() to return.\n", tvd.tv_sec);
  35
  36         switch (r) {
  37         case 1:
  38                 assert(kev.data == second);
  39                 assert(tvd.tv_sec >= second);
  40                 break;
  41         case -1:
  42         case 0:
  43         default:
  44                 fprintf(stderr, "Bug 5225889 still exists!\n");
  45                 exit(EXIT_FAILURE);
  46         }
  47 }
  48
  49 int
  50 main(void)
  51 {
  52         test5225889(5, 10);
  53         test5225889(10, 5);
  54
  55         fprintf(stdout, "Finished.\n");
  56
  57         exit(EXIT_SUCCESS);
  58 }