git.ozlabs.org Git - ccan/blob - ccan/timer/test/run.c

   1 #include <ccan/timer/timer.h>
   2 /* Include the C files directly. */
   3 #include <ccan/timer/timer.c>
   4 #include <ccan/tap/tap.h>
   5
   6 static struct timeabs timeabs_from_nsec(unsigned long long nsec)
   7 {
   8         struct timeabs epoch = { { 0, 0 } };
   9         return timeabs_add(epoch, time_from_nsec(nsec));
  10 }
  11
  12 int main(void)
  13 {
  14         struct timers timers;
  15         struct timer t[64];
  16         struct timeabs earliest;
  17         uint64_t i;
  18         struct timeabs epoch = { { 0, 0 } };
  19
  20         /* This is how many tests you plan to run */
  21         plan_tests(488);
  22
  23         timers_init(&timers, epoch);
  24         ok1(timers_check(&timers, NULL));
  25         ok1(!timer_earliest(&timers, &earliest));
  26
  27         timer_add(&timers, &t[0], timeabs_from_nsec(1));
  28         ok1(timers_check(&timers, NULL));
  29         ok1(timer_earliest(&timers, &earliest));
  30         ok1(timeabs_eq(earliest, grains_to_time(t[0].time)));
  31         timer_del(&timers, &t[0]);
  32         ok1(timers_check(&timers, NULL));
  33         ok1(!timer_earliest(&timers, &earliest));
  34
  35         /* Check timer ordering. */
  36         for (i = 0; i < 32; i++) {
  37                 timer_add(&timers, &t[i*2], timeabs_from_nsec(1ULL << i));
  38                 ok1(timers_check(&timers, NULL));
  39                 timer_add(&timers, &t[i*2+1], timeabs_from_nsec((1ULL << i) + 1));
  40                 ok1(timers_check(&timers, NULL));
  41         }
  42
  43         for (i = 0; i < 32; i++) {
  44                 const struct timer *t1, *t2;
  45
  46                 t1 = get_first(&timers);
  47                 ok1(t1 == &t[i*2] || t1 == &t[i*2+1]);
  48                 timer_del(&timers, (struct timer *)t1);
  49                 ok1(timers_check(&timers, NULL));
  50
  51                 t2 = get_first(&timers);
  52                 ok1(t2 != t1 && (t2 == &t[i*2] || t2 == &t[i*2+1]));
  53                 timer_del(&timers, (struct timer *)t2);
  54                 ok1(timers_check(&timers, NULL));
  55         }
  56
  57         /* Check expiry. */
  58         for (i = 0; i < 32; i++) {
  59                 uint64_t exp = (uint64_t)TIMER_GRANULARITY << i;
  60
  61                 timer_add(&timers, &t[i*2], timeabs_from_nsec(exp));
  62                 ok1(timers_check(&timers, NULL));
  63                 timer_add(&timers, &t[i*2+1], timeabs_from_nsec(exp + 1));
  64                 ok1(timers_check(&timers, NULL));
  65         }
  66
  67         for (i = 0; i < 32; i++) {
  68                 struct timer *t1, *t2;
  69
  70                 ok1(timer_earliest(&timers, &earliest));
  71                 t1 = timers_expire(&timers, earliest);
  72                 ok1(t1);
  73                 t2 = timers_expire(&timers, earliest);
  74                 ok1(t2);
  75                 ok1(!timers_expire(&timers, earliest));
  76
  77                 ok1(t1 == &t[i*2] || t1 == &t[i*2+1]);
  78                 ok1(t2 != t1 && (t2 == &t[i*2] || t2 == &t[i*2+1]));
  79                 ok1(timers_check(&timers, NULL));
  80         }
  81
  82         ok1(!timer_earliest(&timers, &earliest));
  83
  84         timers_cleanup(&timers);
  85
  86         /* This exits depending on whether all tests passed */
  87         return exit_status();
  88 }