1#include "test/jemalloc_test.h"
2
3void
4timer_start(timedelta_t *timer) {
5	nstime_init(&timer->t0, 0);
6	nstime_update(&timer->t0);
7}
8
9void
10timer_stop(timedelta_t *timer) {
11	nstime_copy(&timer->t1, &timer->t0);
12	nstime_update(&timer->t1);
13}
14
15uint64_t
16timer_usec(const timedelta_t *timer) {
17	nstime_t delta;
18
19	nstime_copy(&delta, &timer->t1);
20	nstime_subtract(&delta, &timer->t0);
21	return nstime_ns(&delta) / 1000;
22}
23
24void
25timer_ratio(timedelta_t *a, timedelta_t *b, char *buf, size_t buflen) {
26	uint64_t t0 = timer_usec(a);
27	uint64_t t1 = timer_usec(b);
28	uint64_t mult;
29	size_t i = 0;
30	size_t j, n;
31
32	/* Whole. */
33	n = malloc_snprintf(&buf[i], buflen-i, "%"FMTu64, t0 / t1);
34	i += n;
35	if (i >= buflen) {
36		return;
37	}
38	mult = 1;
39	for (j = 0; j < n; j++) {
40		mult *= 10;
41	}
42
43	/* Decimal. */
44	n = malloc_snprintf(&buf[i], buflen-i, ".");
45	i += n;
46
47	/* Fraction. */
48	while (i < buflen-1) {
49		uint64_t round = (i+1 == buflen-1 && ((t0 * mult * 10 / t1) % 10
50		    >= 5)) ? 1 : 0;
51		n = malloc_snprintf(&buf[i], buflen-i,
52		    "%"FMTu64, (t0 * mult / t1) % 10 + round);
53		i += n;
54		mult *= 10;
55	}
56}
57