1 #include "test/jemalloc_test.h" 2 3 void 4 timer_start(timedelta_t *timer) 5 { 6 7 #if JEMALLOC_CLOCK_GETTIME 8 if (sysconf(_SC_MONOTONIC_CLOCK) <= 0) 9 timer->clock_id = CLOCK_REALTIME; 10 else 11 timer->clock_id = CLOCK_MONOTONIC; 12 clock_gettime(timer->clock_id, &timer->tv0); 13 #else 14 gettimeofday(&timer->tv0, NULL); 15 #endif 16 } 17 18 void 19 timer_stop(timedelta_t *timer) 20 { 21 22 #if JEMALLOC_CLOCK_GETTIME 23 clock_gettime(timer->clock_id, &timer->tv1); 24 #else 25 gettimeofday(&timer->tv1, NULL); 26 #endif 27 } 28 29 uint64_t 30 timer_usec(const timedelta_t *timer) 31 { 32 33 #if JEMALLOC_CLOCK_GETTIME 34 return (((timer->tv1.tv_sec - timer->tv0.tv_sec) * 1000000) + 35 (timer->tv1.tv_nsec - timer->tv0.tv_nsec) / 1000); 36 #else 37 return (((timer->tv1.tv_sec - timer->tv0.tv_sec) * 1000000) + 38 timer->tv1.tv_usec - timer->tv0.tv_usec); 39 #endif 40 } 41 42 void 43 timer_ratio(timedelta_t *a, timedelta_t *b, char *buf, size_t buflen) 44 { 45 uint64_t t0 = timer_usec(a); 46 uint64_t t1 = timer_usec(b); 47 uint64_t mult; 48 unsigned i = 0; 49 unsigned j; 50 int n; 51 52 /* Whole. */ 53 n = malloc_snprintf(&buf[i], buflen-i, "%"PRIu64, t0 / t1); 54 i += n; 55 if (i >= buflen) 56 return; 57 mult = 1; 58 for (j = 0; j < n; j++) 59 mult *= 10; 60 61 /* Decimal. */ 62 n = malloc_snprintf(&buf[i], buflen-i, "."); 63 i += n; 64 65 /* Fraction. */ 66 while (i < buflen-1) { 67 uint64_t round = (i+1 == buflen-1 && ((t0 * mult * 10 / t1) % 10 68 >= 5)) ? 1 : 0; 69 n = malloc_snprintf(&buf[i], buflen-i, 70 "%"PRIu64, (t0 * mult / t1) % 10 + round); 71 i += n; 72 mult *= 10; 73 } 74 } 75
