sysresmonitoring/oommonitor/inc/oomlog.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 27 May 2010 13:01:09 +0300
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/*
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* Copyright (c) 2006-2010 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:  Logging functionality for OOM monitor profiling.
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*
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*/
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#ifndef OOMLOG_H_
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#define OOMLOG_H_
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#ifdef _DEBUG
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#include <apgwgnam.h>
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#include "oomwindowgrouplist.h"
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const TUint KTimeBetweenMemorySamples = 100000; // In microseconds
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const TUint KSamplingDurationUint = 3000000;
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const TUint KMaxBytesOfLoggingPerSample = 20;
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NONSHARABLE_CLASS(COomLogger) : public CTimer
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    {
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public:
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    static COomLogger* NewL(RWsSession& aWs, RFs& aFs);
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    // Start logging the available memory every n micro seconds
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    // Firstly a list of the app IDs is written to the log (foreground app first)
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    // Note that the log is created in memory (to a pre-allocated buffer) and flushed out after it is complete
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    // the samples are saved in CSV format so that they can easily be cut and pasted to plot graphs etc.
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    void StartL();
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// From CTimer / CActice
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    void RunL();
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    void DoCancel();
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    ~COomLogger();
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    void Write(const TDesC8& aBuffer);
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protected:
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    void LogApplicationIds();
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    void LogFreeMemory();
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    COomLogger(RWsSession& aWs, RFs& aFs);
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    void ConstructL();
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    // Duplicated functionality from OomMonitor
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    // Duplicated because it was messy to reuse it and to minimise changes to OOM monitor during development of new features
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    void ColapseWindowGroupTree();
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    TUid GetUidFromWindowGroupId(TInt aWgId);
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    RWsSession& iWs;    
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    // Used to get a list of open applications
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    RArray<RWsSession::TWindowGroupChainInfo> iWgIds;
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    CApaWindowGroupName* iWgName;
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    HBufC* iWgNameBuf;              // owned by iWgName
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    RFs& iFs;
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    RFile iFile;
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    TBool iIsOpen;
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    // The time when the logging was started
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    TTime iStartTime;
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    TBuf8<(KSamplingDurationUint / KTimeBetweenMemorySamples) * KMaxBytesOfLoggingPerSample> iWriteBuffer;
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    };
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#endif //_DEBUG
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#endif /*OOMLOG_H_*/