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#include "test/jemalloc_test.h"
void
timer_start(timedelta_t *timer)
{
#ifdef _WIN32
GetSystemTimeAsFileTime(&timer->ft0);
#elif JEMALLOC_CLOCK_GETTIME
if (sysconf(_SC_MONOTONIC_CLOCK) <= 0)
timer->clock_id = CLOCK_REALTIME;
else
timer->clock_id = CLOCK_MONOTONIC;
clock_gettime(timer->clock_id, &timer->ts0);
#else
gettimeofday(&timer->tv0, NULL);
#endif
}
void
timer_stop(timedelta_t *timer)
{
#ifdef _WIN32
GetSystemTimeAsFileTime(&timer->ft0);
#elif JEMALLOC_CLOCK_GETTIME
clock_gettime(timer->clock_id, &timer->ts1);
#else
gettimeofday(&timer->tv1, NULL);
#endif
}
uint64_t
timer_usec(const timedelta_t *timer)
{
#ifdef _WIN32
uint64_t t0, t1;
t0 = (((uint64_t)timer->ft0.dwHighDateTime) << 32) |
timer->ft0.dwLowDateTime;
t1 = (((uint64_t)timer->ft1.dwHighDateTime) << 32) |
timer->ft1.dwLowDateTime;
return ((t1 - t0) / 10);
#elif JEMALLOC_CLOCK_GETTIME
return (((timer->ts1.tv_sec - timer->ts0.tv_sec) * 1000000) +
(timer->ts1.tv_nsec - timer->ts0.tv_nsec) / 1000);
#else
return (((timer->tv1.tv_sec - timer->tv0.tv_sec) * 1000000) +
timer->tv1.tv_usec - timer->tv0.tv_usec);
#endif
}
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;
unsigned i = 0;
unsigned j;
int 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;
}
}
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