1#include "test/jemalloc_test.h" 2 3void 4timer_start(timedelta_t *timer) 5{ 6 nstime_init(&timer->t0, 0); 7 nstime_update(&timer->t0); 8} 9 10void 11timer_stop(timedelta_t *timer) 12{ 13 nstime_copy(&timer->t1, &timer->t0); 14 nstime_update(&timer->t1); 15} 16 17uint64_t 18timer_usec(const timedelta_t *timer) 19{ 20 nstime_t delta; 21 22 nstime_copy(&delta, &timer->t1); 23 nstime_subtract(&delta, &timer->t0); 24 return (nstime_ns(&delta) / 1000); 25} 26 27void 28timer_ratio(timedelta_t *a, timedelta_t *b, char *buf, size_t buflen) 29{ 30 uint64_t t0 = timer_usec(a); 31 uint64_t t1 = timer_usec(b); 32 uint64_t mult; 33 size_t i = 0; 34 size_t j, n; 35 36 /* Whole. */ 37 n = malloc_snprintf(&buf[i], buflen-i, "%"FMTu64, t0 / t1); 38 i += n; 39 if (i >= buflen) 40 return; 41 mult = 1; 42 for (j = 0; j < n; j++) 43 mult *= 10; 44 45 /* Decimal. */ 46 n = malloc_snprintf(&buf[i], buflen-i, "."); 47 i += n; 48 49 /* Fraction. */ 50 while (i < buflen-1) { 51 uint64_t round = (i+1 == buflen-1 && ((t0 * mult * 10 / t1) % 10 52 >= 5)) ? 1 : 0; 53 n = malloc_snprintf(&buf[i], buflen-i, 54 "%"FMTu64, (t0 * mult / t1) % 10 + round); 55 i += n; 56 mult *= 10; 57 } 58} 59