timer: add hook for allocation functions.

[ccan] / ccan / timer / test / run-allocator.c

diff --git a/ccan/timer/test/run-allocator.c b/ccan/timer/test/run-allocator.c
new file mode 100644 (file)
index 0000000..75e1af0
--- /dev/null
+++ b/ccan/timer/test/run-allocator.c
@@ -0,0 +1,62 @@
+#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();
+}