57 lines
1.1 KiB
C
57 lines
1.1 KiB
C
#include "test/jemalloc_test.h"
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void
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timer_start(timedelta_t *timer) {
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nstime_init(&timer->t0, 0);
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nstime_update(&timer->t0);
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}
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void
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timer_stop(timedelta_t *timer) {
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nstime_copy(&timer->t1, &timer->t0);
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nstime_update(&timer->t1);
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}
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uint64_t
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timer_usec(const timedelta_t *timer) {
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nstime_t delta;
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nstime_copy(&delta, &timer->t1);
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nstime_subtract(&delta, &timer->t0);
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return nstime_ns(&delta) / 1000;
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}
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void
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timer_ratio(timedelta_t *a, timedelta_t *b, char *buf, size_t buflen) {
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uint64_t t0 = timer_usec(a);
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uint64_t t1 = timer_usec(b);
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uint64_t mult;
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size_t i = 0;
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size_t j, n;
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/* Whole. */
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n = malloc_snprintf(&buf[i], buflen-i, "%"FMTu64, t0 / t1);
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i += n;
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if (i >= buflen) {
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return;
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}
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mult = 1;
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for (j = 0; j < n; j++) {
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mult *= 10;
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}
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/* Decimal. */
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n = malloc_snprintf(&buf[i], buflen-i, ".");
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i += n;
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/* Fraction. */
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while (i < buflen-1) {
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uint64_t round = (i+1 == buflen-1 && ((t0 * mult * 10 / t1) % 10
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>= 5)) ? 1 : 0;
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n = malloc_snprintf(&buf[i], buflen-i,
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"%"FMTu64, (t0 * mult / t1) % 10 + round);
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i += n;
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mult *= 10;
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}
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}
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