+#define CCAN_TIMER_DEBUG
+/* Include the C files directly. */
+#include <ccan/timer/timer.c>
+#include <ccan/tap/tap.h>
+
+static void *test_alloc(size_t len, void *arg)
+{
+ (*(size_t *)arg)++;
+ return malloc(len);
+}
+
+static void test_free(const void *p, void *arg)
+{
+ if (p) {
+ (*(size_t *)arg)--;
+ free((void *)p);
+ }
+}
+
+static struct timemono timemono_from_nsec(unsigned long long nsec)
+{
+ struct timemono epoch = { { 0, 0 } };
+ return timemono_add(epoch, time_from_nsec(nsec));
+}
+
+int main(void)
+{
+ struct timers timers;
+ struct timer t[64];
+ size_t num_allocs = 0;
+ const struct timemono epoch = { { 0, 0 } };
+
+ plan_tests(7);
+
+ timers_set_allocator(test_alloc, test_free, &num_allocs);
+ timers_init(&timers, epoch);
+ timer_init(&t[0]);
+
+ timer_addmono(&timers, &t[0],
+ timemono_from_nsec(TIMER_GRANULARITY << TIMER_LEVEL_BITS));
+ timers_expire(&timers, timemono_from_nsec(1));
+ ok1(num_allocs == 1);
+ timer_del(&timers, &t[0]);
+ ok1(num_allocs == 1);
+ timers_cleanup(&timers);
+ ok1(num_allocs == 0);
+
+ /* Should restore defaults */
+ timers_set_allocator(NULL, NULL, NULL);
+ ok1(timer_alloc == timer_default_alloc);
+ ok1(timer_free == timer_default_free);
+
+ timers_init(&timers, epoch);
+ timer_addmono(&timers, &t[0],
+ timemono_from_nsec(TIMER_GRANULARITY << TIMER_LEVEL_BITS));
+ ok1(num_allocs == 0);
+ timers_cleanup(&timers);
+ ok1(num_allocs == 0);
+
+ /* This exits depending on whether all tests passed */
+ return exit_status();
+}