dispatch-1.0/testing/dispatch_timer_set_time.c

   1 #include "config/config.h"
   2
   3 #include <sys/time.h>
   4 #include <assert.h>
   5 #include <stdio.h>
   6 #include <string.h>
   7
   8 #define __DISPATCH_INDIRECT__
   9 #include "src/internal.h"
  10
  11 #include "dispatch_test.h"
  12
  13 int main(void)
  14 {
  15         test_start("Dispatch Update Timer");
  16
  17         dispatch_queue_t main_q = dispatch_get_main_queue();
  18         test_ptr("dispatch_get_main_queue", main_q, dispatch_get_current_queue());
  19
  20         __block int i = 0;
  21         struct timeval start_time;
  22
  23         gettimeofday(&start_time, NULL);
  24         dispatch_source_attr_t attr = dispatch_source_attr_create();
  25         dispatch_source_attr_set_finalizer(attr, ^(dispatch_source_t ds) {
  26                 struct timeval end_time;
  27                 gettimeofday(&end_time, NULL);
  28                 // Make sure we actually managed to adjust the interval
  29                 // duration.  Seven one second ticks would blow past
  30                 // this.
  31                 test_long_less_than("total duration", end_time.tv_sec - start_time.tv_sec, 3);
  32                 test_ptr_notnull("finalizer ran", ds);
  33                 test_stop();
  34         });
  35
  36         dispatch_source_t s = dispatch_source_timer_create(DISPATCH_TIMER_INTERVAL,
  37                 1000000000ull,
  38                 0,
  39                 attr,
  40                 main_q,
  41                 ^(dispatch_event_t ev) {
  42                         long err;
  43                         if (dispatch_event_get_error(ev, &err)) {
  44                                 test_errno("dispatch_event_get_error", err, ECANCELED);
  45                                 dispatch_release(dispatch_event_get_source(ev));
  46                         } else {
  47                                 fprintf(stderr, "%d\n", ++i);
  48                                 if (i >= 7) {
  49                                         dispatch_cancel(dispatch_event_get_source(ev));
  50                                 } else if (i == 1) {
  51                                         dispatch_source_timer_set_time(dispatch_event_get_source(ev), 100, 0);
  52                                 }
  53                         }
  54                 });
  55         test_ptr_notnull("dispatch_source_timer_create", s);
  56
  57         dispatch_release(attr);
  58
  59         dispatch_main();
  60
  61         return 0;
  62 }