loggers/loggerqt/src/glxperformancelog.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 16 Apr 2010 14:58:46 +0300
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permissions -rw-r--r--
Revision: 201011 Kit: 201015
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/*
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:   ?Description
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*
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*/
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#include <glxperformancelog.h>
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#define GLX_LOG_PRINT_ITERATION 20
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QFile GlxPerformanceLog::mLogFile;
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qint16 GlxPerformanceLog::mObjectCounter = 0;
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GlxPerformanceLog::GlxPerformanceLog(char *str) : mSpendTime(0), mTotalTime(0), mIteration(0), mInfoMsg (str)
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{ 
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    mTime.start();
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    ++mObjectCounter;
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    if( GlxPerformanceLog::mLogFile.isOpen() == FALSE) {
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	    GlxPerformanceLog::mLogFile.setFileName("glxperlog.txt");
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	    QDir::setCurrent("c:\\data\\");
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	    if(GlxPerformanceLog::mLogFile.open(QIODevice::Append)) {
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			 GlxPerformanceLog::mLogFile.setTextModeEnabled(TRUE);
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		}
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    }
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}
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void GlxPerformanceLog::start()
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{
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    mTime.restart();
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}
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void GlxPerformanceLog::stop()
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{
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    mSpendTime = mTime.elapsed();
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    mTotalTime += mSpendTime;
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    ++mIteration;
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    if ( (mIteration % GLX_LOG_PRINT_ITERATION )== 1) {
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        appendPerformanceLog();
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    }
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}
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void GlxPerformanceLog::end()
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{
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    appendPerformanceLog();
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    mSpendTime = mTotalTime = mIteration = 0;
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}
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void GlxPerformanceLog::done(char *msg )
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{
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    mSpendTime = mTime.elapsed();
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    mTotalTime += mSpendTime;
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    ++mIteration;
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    appendPerformanceLog(msg);
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    mSpendTime = mTotalTime = mIteration = 0;
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}
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qreal GlxPerformanceLog::getAverageTime()
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{
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    if( mIteration == 0) {
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        return -1;
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    }
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    return ( (mTotalTime + 0.0) / mIteration );
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}
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quint32 GlxPerformanceLog::getTime()
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{
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    return mSpendTime;
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}
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void GlxPerformanceLog::appendPerformanceLog(char *msg)
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{
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    char logText[255] = {0};
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    sprintf(logText, "%s : %s last time %u : average time : %f iteration %u \n", mInfoMsg, msg, mSpendTime, getAverageTime(), mIteration);
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    GlxPerformanceLog::mLogFile.write(logText);
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}
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void GlxPerformanceLog::appendTimeStamp(char *msg)
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{
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    char logText[255] = {0};
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    QTime t = QTime::currentTime();
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    sprintf(logText, "%s : Time Stamp %d:%d:%d:%d \n", msg, t.hour(), t.minute(), t.second(), t.msec());
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    GlxPerformanceLog::mLogFile.write(logText);
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}
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GlxPerformanceLog::~GlxPerformanceLog()
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{
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    --mObjectCounter;
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    if ( mObjectCounter == 0) {
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        GlxPerformanceLog::mLogFile.close();
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    }
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}
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