/*** Clock ***/
mtime_t mdate (void)
{
#if (_WIN32_WINNT >= 0x0601)
ULONGLONG ts;
if (unlikely(!QueryUnbiasedInterruptTime (&ts)))
abort ();
/* hundreds of nanoseconds */
static_assert ((10000000 % CLOCK_FREQ) == 0, "Broken frequencies ratio");
return ts / (10000000 / CLOCK_FREQ);
#elif (_WIN32_WINNT >= 0x0600)
ULONGLONG ts = GetTickCount64 ();
/* milliseconds */
static_assert ((CLOCK_FREQ % 1000) == 0, "Broken frequencies ratio");
return ts * (CLOCK_FREQ / 1000);
#else
/* We don't need the real date, just the value of a high precision timer */
LARGE_INTEGER counter;
if (!QueryPerformanceCounter (&counter))
abort ();
/* Convert to from (1/freq) to microsecond resolution */
/* We need to split the division to avoid 63-bits overflow */
lldiv_t d = lldiv (counter.QuadPart, freq.QuadPart);
return (d.quot * 1000000) + ((d.rem * 1000000) / freq.QuadPart);
#endif
}
static mtime_t mdate_interrupt (void)
{
ULONGLONG ts;
BOOL ret;
#if (_WIN32_WINNT >= 0x0601)
ret = QueryUnbiasedInterruptTime (&ts);
#else
ret = clk.interrupt.query (&ts);
#endif
if (unlikely(!ret))
abort ();
/* hundreds of nanoseconds */
static_assert ((10000000 % CLOCK_FREQ) == 0, "Broken frequencies ratio");
return ts / (10000000 / CLOCK_FREQ);
}
/*** Clock ***/
mtime_t mdate (void)
{
#if (_WIN32_WINNT >= 0x0601)
ULONGLONG ts;
if (unlikely(!QueryUnbiasedInterruptTime (&ts)))
abort ();
return ts / 10; /* hundreds of nanoseconds */
#else
/* We don't need the real date, just the value of a high precision timer */
LARGE_INTEGER counter;
if (!QueryPerformanceCounter (&counter))
abort ();
/* Convert to from (1/freq) to microsecond resolution */
/* We need to split the division to avoid 63-bits overflow */
lldiv_t d = lldiv (counter.QuadPart, freq.QuadPart);
return (d.quot * 1000000) + ((d.rem * 1000000) / freq.QuadPart);
#endif
}
