testing/dispatch_timer_bit31.c

   1 #include <assert.h>
   2 #include <stdio.h>
   3 #include <string.h>
   4 #include <sys/time.h>
   5
   6 #include <dispatch/dispatch.h>
   7
   8 #include "dispatch_test.h"
   9
  10 int main(void)
  11 {
  12         test_start("Dispatch Source Timer, bit 31");
  13
  14         dispatch_queue_t main_q = dispatch_get_main_queue();
  15         test_ptr("dispatch_get_main_queue", main_q, dispatch_get_current_queue());
  16
  17         __block int i = 0;
  18         struct timeval start_time;
  19
  20         gettimeofday(&start_time, NULL);
  21         dispatch_source_attr_t attr = dispatch_source_attr_create();
  22         dispatch_source_attr_set_finalizer(attr, ^(dispatch_source_t ds) {
  23                 struct timeval end_time;
  24                 gettimeofday(&end_time, NULL);
  25                 test_ptr_notnull("finalizer ran", ds);
  26                 // XXX: check, s/b 2.0799... seconds, which is <4 seconds
  27                 // when it could end on a bad boundry.
  28                 test_long_less_than("needs to finish faster than 4 seconds", end_time.tv_sec - start_time.tv_sec, 4);
  29                 // And it has to take at least two seconds...
  30                 test_long_less_than("can't finish faster than 2 seconds", 1, end_time.tv_sec - start_time.tv_sec);
  31                 test_stop();
  32         });
  33
  34         dispatch_source_t s = dispatch_source_timer_create(DISPATCH_TIMER_INTERVAL,
  35                 0x80000000ull,
  36                 0,
  37                 attr,
  38                 main_q,
  39                 ^(dispatch_event_t ev) {
  40                         long err;
  41                         if (dispatch_event_get_error(ev, &err)) {
  42                                 test_errno("dispatch_event_get_error", err, ECANCELED);
  43                                 dispatch_release(dispatch_event_get_source(ev));
  44                         } else {
  45                                 fprintf(stderr, "%d\n", ++i);
  46                                 dispatch_cancel(dispatch_event_get_source(ev));
  47                         }
  48                 });
  49         test_ptr_notnull("dispatch_source_timer_create", s);
  50
  51         dispatch_release(attr);
  52
  53         dispatch_main();
  54
  55         return 0;
  56 }