/*
** Command & Conquer Generals(tm)
** Copyright 2025 Electronic Arts Inc.
**
** This program is free software: you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation, either version 3 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program. If not, see .
*/
// timingTest.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#define WIN32_LEAN_AND_MEAN
#include
#include
#include
#include
double s_ticksPerSec = 0.0f;
double s_ticksPerMSec = 0.0f;
char buffer[1024];
//-------------------------------------------------------------------------------------------------
void GetPrecisionTimer(INT64* t)
{
// CPUID is needed to force serialization of any previous instructions.
__asm
{
RDTSC
MOV ECX,[t]
MOV [ECX], EAX
MOV [ECX+4], EDX
}
}
//-------------------------------------------------------------------------------------------------
void InitPrecisionTimer()
{
__int64 totalTime = 0;
INT64 TotalTicks = 0;
static int TESTS = 10;
cout << "Starting tests..." << flush;
for (int i = 0; i < TESTS; ++i)
{
int TimeStart;
int TimeStop;
INT64 StartTicks;
INT64 EndTicks;
TimeStart = timeGetTime();
GetPrecisionTimer(&StartTicks);
for(;;)
{
TimeStop = timeGetTime();
if ((TimeStop - TimeStart) > 1000)
{
GetPrecisionTimer(&EndTicks);
break;
}
}
TotalTicks += (EndTicks - StartTicks);
totalTime += (TimeStop - TimeStart);
}
cout << "...completed" << endl;
s_ticksPerMSec = 1.0 * TotalTicks / totalTime;
s_ticksPerSec = s_ticksPerMSec * 1000.0f;
sprintf(buffer, "Ticks per sec: %.2f\n", s_ticksPerSec);
cout << buffer;
sprintf(buffer, "Ticks per msec: %.2f\n", s_ticksPerMSec);
cout << buffer;
}
int main(int argc, char* argv[])
{
INT64 startTime, endTime, totalTime = 0;
InitPrecisionTimer();
FILE *out = fopen("output.txt", "w");
cout << "Beginning Looping tests: " << endl;
const int TESTCOUNT = 60;
while (1) {
for (int i = 0; i < TESTCOUNT; ++i) {
GetPrecisionTimer(&startTime);
Sleep(5);
GetPrecisionTimer(&endTime);
totalTime += (endTime - startTime);
}
double avgPerFrame = 1.0 * totalTime / TESTCOUNT;
sprintf(buffer, "%.8f,\t", avgPerFrame / s_ticksPerMSec );
fwrite(buffer, strlen(buffer), 1, out);
fflush(out);
cout << buffer << endl;
totalTime = 0;
}
fclose(out);
return 0;
}