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