1 files changed, 56 insertions, 0 deletions
diff --git a/deps/jemalloc/test/src/timer.c b/deps/jemalloc/test/src/timer.c
new file mode 100644
index 0000000..c451c63
--- /dev/null
+++ b/deps/jemalloc/test/src/timer.c
@@ -0,0 +1,56 @@
+#include "test/jemalloc_test.h"
+
+void
+timer_start(timedelta_t *timer) {
+	nstime_init(&timer->t0, 0);
+	nstime_update(&timer->t0);
+}
+
+void
+timer_stop(timedelta_t *timer) {
+	nstime_copy(&timer->t1, &timer->t0);
+	nstime_update(&timer->t1);
+}
+
+uint64_t
+timer_usec(const timedelta_t *timer) {
+	nstime_t delta;
+
+	nstime_copy(&delta, &timer->t1);
+	nstime_subtract(&delta, &timer->t0);
+	return nstime_ns(&delta) / 1000;
+}
+
+void
+timer_ratio(timedelta_t *a, timedelta_t *b, char *buf, size_t buflen) {
+	uint64_t t0 = timer_usec(a);
+	uint64_t t1 = timer_usec(b);
+	uint64_t mult;
+	size_t i = 0;
+	size_t j, n;
+
+	/* Whole. */
+	n = malloc_snprintf(&buf[i], buflen-i, "%"FMTu64, t0 / t1);
+	i += n;
+	if (i >= buflen) {
+		return;
+	}
+	mult = 1;
+	for (j = 0; j < n; j++) {
+		mult *= 10;
+	}
+
+	/* Decimal. */
+	n = malloc_snprintf(&buf[i], buflen-i, ".");
+	i += n;
+
+	/* Fraction. */
+	while (i < buflen-1) {
+		uint64_t round = (i+1 == buflen-1 && ((t0 * mult * 10 / t1) % 10
+		    >= 5)) ? 1 : 0;
+		n = malloc_snprintf(&buf[i], buflen-i,
+		    "%"FMTu64, (t0 * mult / t1) % 10 + round);
+		i += n;
+		mult *= 10;
+	}
+}