mirror of
https://github.com/ZDoom/gzdoom.git
synced 2024-11-07 13:30:16 +00:00
54 lines
No EOL
1.1 KiB
C
54 lines
No EOL
1.1 KiB
C
/**
|
|
* @file HiResTimer.h
|
|
* @brief
|
|
* @note
|
|
*/
|
|
|
|
#ifndef _HI_RES_TIMER_H_
|
|
#define _HI_RES_TIMER_H_
|
|
|
|
#ifdef WIN32
|
|
#include <windows.h> // probably already done in stdafx.h
|
|
static LARGE_INTEGER start;
|
|
static LARGE_INTEGER stop;
|
|
static LARGE_INTEGER freq;
|
|
static _int64 elapsedCounts;
|
|
static double elapsedMillis;
|
|
static double elapsedMicros;
|
|
static HANDLE processHandle;
|
|
static DWORD prevPriorityClass;
|
|
|
|
void HrtInit()
|
|
{
|
|
processHandle = GetCurrentProcess();
|
|
prevPriorityClass = GetPriorityClass(processHandle);
|
|
QueryPerformanceFrequency(&freq);
|
|
}
|
|
|
|
void HrtStart()
|
|
{
|
|
QueryPerformanceCounter(&start);
|
|
}
|
|
|
|
void HrtSetPriority(DWORD priority)
|
|
{
|
|
int flag;
|
|
prevPriorityClass = GetPriorityClass(processHandle);
|
|
flag = SetPriorityClass(processHandle, priority);
|
|
}
|
|
|
|
void HrtResetPriority(void)
|
|
{
|
|
int flag = SetPriorityClass(processHandle, prevPriorityClass);
|
|
}
|
|
|
|
double HrtElapsedMillis()
|
|
{
|
|
QueryPerformanceCounter(&stop);
|
|
elapsedCounts = (stop.QuadPart - start.QuadPart);
|
|
elapsedMillis = ((elapsedCounts * 1000.0) / freq.QuadPart);
|
|
return elapsedMillis;
|
|
}
|
|
|
|
#endif
|
|
#endif |