Mikhail Romanko
130846e427
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CI / build-and-analyze (push) Successful in 54s
72 lines
1.6 KiB
C
72 lines
1.6 KiB
C
#define WIN32_LEAN_AND_MEAN
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#include "../CgeTimer.h"
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#include <stdlib.h>
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#include <windows.h>
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enum Type {
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TYPE_UNDEFINED,
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TYPE_TICKS,
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TYPE_COUNTER,
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};
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static int timerType = TYPE_UNDEFINED;
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static LARGE_INTEGER timerFrequency;
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static int checkAvailableTimer(void) {
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LARGE_INTEGER dummy;
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if (timerType != TYPE_UNDEFINED)
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return timerType;
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if (QueryPerformanceFrequency(&timerFrequency)) {
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if (QueryPerformanceCounter(&dummy)) {
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timerType = TYPE_COUNTER;
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} else {
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timerType = TYPE_TICKS;
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}
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} else {
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timerType = TYPE_TICKS;
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}
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return timerType;
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}
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static void getTimer(uint64_t *sec, uint64_t *nsec) {
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LARGE_INTEGER newCount;
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uint64_t newTicks;
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switch (checkAvailableTimer())
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{
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case TYPE_COUNTER:
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QueryPerformanceCounter(&newCount);
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*sec = newCount.QuadPart / timerFrequency.QuadPart;
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*nsec = (newCount.QuadPart - *sec * timerFrequency.QuadPart) * 1000000000ul / timerFrequency.QuadPart;
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break;
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default:
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case TYPE_TICKS:
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newTicks = GetTickCount64();
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*sec = newTicks / 1000;
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*nsec = (newTicks - *sec * 1000) * 1000000ul;
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break;
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}
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}
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int CgeTimerIsMonotonic(void) {
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return checkAvailableTimer() == TYPE_COUNTER;
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}
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uint64_t CgeTimerMilliseconds(void) {
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uint64_t newSec, newNsec;
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getTimer(&newSec, &newNsec);
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return (newSec * 1000u) + (newNsec / 1000000ul);
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}
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uint64_t CgeTimerNanoseconds(void) {
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uint64_t newSec, newNsec;
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getTimer(&newSec, &newNsec);
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return (newSec * 1000000000ul) + newNsec;
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}
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