/*

* Copyright (c) 2006-2010 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Logging functionality for OOM monitor profiling.

*

*/

#ifndef OOMLOG_H_

#define OOMLOG_H_

#ifdef _DEBUG

#include <apgwgnam.h>

#include "oomwindowgrouplist.h"

const TUint KTimeBetweenMemorySamples = 100000; // In microseconds

const TUint KSamplingDurationUint = 3000000;

const TUint KMaxBytesOfLoggingPerSample = 20;

NONSHARABLE_CLASS(COomLogger) : public CTimer

    {

public:

    static COomLogger* NewL(RWsSession& aWs, RFs& aFs);

    // Start logging the available memory every n micro seconds

    // Firstly a list of the app IDs is written to the log (foreground app first)

    // Note that the log is created in memory (to a pre-allocated buffer) and flushed out after it is complete

    // the samples are saved in CSV format so that they can easily be cut and pasted to plot graphs etc.

    void StartL();

// From CTimer / CActice

    void RunL();

    void DoCancel();

    ~COomLogger();

    void Write(const TDesC8& aBuffer);

protected:

    void LogApplicationIds();

    void LogFreeMemory();

    COomLogger(RWsSession& aWs, RFs& aFs);

    void ConstructL();

    // Duplicated functionality from OomMonitor

    // Duplicated because it was messy to reuse it and to minimise changes to OOM monitor during development of new features

    void ColapseWindowGroupTree();

    TUid GetUidFromWindowGroupId(TInt aWgId);

    RWsSession& iWs;    

    // Used to get a list of open applications

    RArray<RWsSession::TWindowGroupChainInfo> iWgIds;

    CApaWindowGroupName* iWgName;

    HBufC* iWgNameBuf;              // owned by iWgName

    RFs& iFs;

    RFile iFile;

    TBool iIsOpen;

    // The time when the logging was started

    TTime iStartTime;

    TBuf8<(KSamplingDurationUint / KTimeBetweenMemorySamples) * KMaxBytesOfLoggingPerSample> iWriteBuffer;

    };

#endif //_DEBUG

#endif /*OOMLOG_H_*/