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Add time.Tick for performance related timings

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This commit is contained in:
gingerBill
2021-01-09 01:08:16 +00:00
parent fba4bfb2d5
commit 9e8c46b8de
4 changed files with 78 additions and 0 deletions
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core/time/time_windows.odin
+21
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@@ -14,3 +14,24 @@ now :: proc() -> Time {
sleep :: proc(d: Duration) {
win32.Sleep(win32.DWORD(d/Millisecond));
}
_tick_now :: proc() -> Tick {
mul_div_u64 :: proc(val, num, den: i64) -> i64 {
q := val / den;
r := val % den;
return q * num + r * num / den;
}
@thread_local qpc_frequency: win32.LARGE_INTEGER;
if qpc_frequency == 0 {
win32.QueryPerformanceFrequency(&qpc_frequency);
}
now: win32.LARGE_INTEGER;
win32.QueryPerformanceCounter(&now);
_nsec := i64(mul_div_u64(i64(now), 1e9, i64(qpc_frequency)));
return Tick{_nsec = _nsec};
}