103 lines
2.5 KiB
C
103 lines
2.5 KiB
C
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/*
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CDTestFramework http://codercorner.com
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Copyright (c) 2007-2008 Pierre Terdiman, pierre@codercorner.com
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This software is provided 'as-is', without any express or implied warranty.
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In no event will the authors be held liable for any damages arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it freely,
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subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#ifndef PROFILING_H
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#define PROFILING_H
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__forceinline void StartProfile(int& val)
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{
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#ifdef WIN32
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__asm{
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cpuid
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rdtsc
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mov ebx, val
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mov [ebx], eax
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}
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#endif
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}
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__forceinline void EndProfile(int& val)
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{
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#ifdef WIN32
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__asm{
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cpuid
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rdtsc
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mov ebx, val
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sub eax, [ebx]
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mov [ebx], eax
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}
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#endif
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}
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class Profiler
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{
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public:
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Profiler() : mCycles(0), mTime(0.0f), mNbQueries(0), mMsTime(0.0f)
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{
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QueryPerformanceFrequency((LARGE_INTEGER*)&mFreq);
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}
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inline_ void Start()
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{
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QueryPerformanceCounter((LARGE_INTEGER*)&mCounter0);
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//StartProfile(mCycles);
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}
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inline_ void End()
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{
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//EndProfile(mCycles);
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QueryPerformanceCounter((LARGE_INTEGER*)&mCounter1);
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}
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void Reset()
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{
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mCycles = 0;
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mTime = 0.0f;
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mNbQueries = 0;
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mMsTime=0.0f;
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}
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void Accum()
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{
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double t = ((double)mCounter1 - (double)mCounter0)/(double)mFreq;
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float mms = (float)t*1000000;
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mTime += mms;
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mNbQueries++;
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if(mNbQueries==100)
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{
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mNbQueries=1;
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mTime = mms;
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}
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mMsTime = mTime/float(mNbQueries);
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}
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void AddToTweakBar(TwBar* tbar)
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{
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TwAddVarRO(tbar, "Microseconds", TW_TYPE_FLOAT, &mMsTime, " group='Profiling' ");
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}
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__int64 mFreq;
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__int64 mCounter0;
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__int64 mCounter1;
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int mCycles;
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float mTime;
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udword mNbQueries;
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float mMsTime;
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};
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#endif // PROFILING_H
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