/*

* Copyright (c) 2009 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:  

*

*/

#ifndef PERFMON_ENGINE_H

#define PERFMON_ENGINE_H

// INCLUDES

#include <e32std.h>

#include <e32base.h>

#include <apgcli.h>

#include <gdi.h>

#include "perfmon.hrh"

// setting keys (do not change uids of existing keys to maintain compatibility to older versions!)

const TUid KPMSettingHeartBeat                              = { 0x00 };

const TUid KPMSettingMaxSamples                             = { 0x01 };

const TUid KPMSettingPriority                               = { 0x02 };

const TUid KPMSettingCPUMode                                = { 0x03 };

const TUid KPMSettingKeepBackLightOn                        = { 0x04 };

const TUid KPMSettingDataPopupVisbility                     = { 0x05 };

const TUid KPMSettingDataPopupLocation                      = { 0x06 };

const TUid KPMSettingDataPopupSources                       = { 0x07 };

const TUid KPMSettingGraphsVerticalBarPeriod                = { 0x08 };

const TUid KPMSettingGraphsSources                          = { 0x09 };

const TUid KPMSettingLoggingMode                            = { 0x0A };

const TUid KPMSettingLoggingFilePath                        = { 0x0B };

const TUid KPMSettingLoggingSources                         = { 0x0C };

// FORWARD DECLARATIONS

class CPerfMonValuesContainer;

class CPerfMonGraphsContainer;

class CPerfMonDataPopupContainer;

class CEikonEnv;

class CCoeControl;

class CDictionaryFileStore;

// CLASS DECLARATIONS

class TPerfMonSources

    {

public:

    TBool iSrcEnabled[ESourcesLength];

public:

    inline void SetDefaults1()

        {

        iSrcEnabled[ESourceCPU] = ETrue;

        iSrcEnabled[ESourceRAM] = ETrue;

        iSrcEnabled[ESourceC]   = ETrue;

        iSrcEnabled[ESourceD]   = EFalse;

        iSrcEnabled[ESourceE]   = EFalse;

        iSrcEnabled[ESourceF]   = EFalse;

        iSrcEnabled[ESourceG]   = EFalse;

        iSrcEnabled[ESourceH]   = EFalse;

        iSrcEnabled[ESourceI]   = EFalse;        

        }

    inline void SetDefaults2()

        {

        iSrcEnabled[ESourceCPU] = ETrue;

        iSrcEnabled[ESourceRAM] = ETrue;

        iSrcEnabled[ESourceC]   = EFalse;

        iSrcEnabled[ESourceD]   = EFalse;

        iSrcEnabled[ESourceE]   = EFalse;

        iSrcEnabled[ESourceF]   = EFalse;

        iSrcEnabled[ESourceG]   = EFalse;

        iSrcEnabled[ESourceH]   = EFalse;

        iSrcEnabled[ESourceI]   = EFalse;        

        }

    TInt EnabledSourcesCount()

        {

        TInt srcCount(0);

        for (TInt i=0; i<ESourcesLength; i++)

            {

            if (iSrcEnabled[i])

                srcCount++;

            }

        return srcCount;

        }

    };

class TPerfMonSettings

    {

public:

    TInt                iHeartBeat;

    TInt                iMaxSamples;

    TInt                iPriority;

    TInt                iCPUMode;

    TBool               iKeepBacklightOn;

    TInt                iDataPopupVisibility;

    TInt                iDataPopupLocation;

    TPerfMonSources     iDataPopupSources;

    TInt                iGraphsVerticalBarPeriod;

    TPerfMonSources     iGraphsSources;

    TInt                iLoggingMode;

    TFileName           iLoggingFilePath;

    TPerfMonSources     iLoggingSources;

    TBool               iLoggingEnabled;

    };

class TSampleData

	{

public:

    TInt64                          iFree;

    TInt64                          iSize;

    TTimeIntervalMicroSeconds       iTimeFromStart;

	}; 

typedef CArrayFixSeg<TSampleData> CSampleDataArray;

class TSampleEntry

	{

public:

    TBuf<16>            iDescription;

    TBuf<16>            iUnitTypeShort; //eg. b

    TBuf<16>            iUnitTypeLong;  //eg. bytes

    TInt                iDriveNumber;   //used only for disk drives

    TRgb                iGraphColor;

    CSampleDataArray*   iSampleDataArray;

	}; 

typedef CArrayFixSeg<TSampleEntry> CSampleEntryArray;

class CPerfMonEngine : public CActive

	{

public:

	~CPerfMonEngine();

	void ActivateEngineL();

	void DeActivateEngineL();

    void EnableLogging(TBool aEnable);

private:

	void RunL();

	void DoCancel();

protected:

	CPerfMonEngine();

	void ConstructL();

    void LoadSettingsL();

    void SaveSettingsL();

    void OpenLogFile(TBool aOpen);

    void CreateSamplesDataArrayL();

    void UpdateSamplesDataL();

    void AppendLatestSamplesToLogsL();

    void ActivateCPUMonitoringL();

    TBool OpenHandleToNullThread();

    void DeActivateCPUMonitoring();

    TBool CPUTimeSupported();

    TThreadPriority SettingItemToThreadPriority(TInt aIndex);

    void LoadDFSValueL(CDictionaryFileStore* aDicFS, const TUid& aUid, TInt& aValue);

    void LoadDFSValueL(CDictionaryFileStore* aDicFS, const TUid& aUid, TDes& aValue);

    void LoadDFSValueL(CDictionaryFileStore* aDicFS, const TUid& aUid, TPerfMonSources& aValue);

    void SaveDFSValueL(CDictionaryFileStore* aDicFS, const TUid& aUid, const TInt& aValue);

    void SaveDFSValueL(CDictionaryFileStore* aDicFS, const TUid& aUid, const TDes& aValue);

    void SaveDFSValueL(CDictionaryFileStore* aDicFS, const TUid& aUid, const TPerfMonSources& aValue);

protected:

    virtual void SendDrawEventToContainersL() = 0;

    virtual void HandleSettingsChangeL();

public:

    inline TPerfMonSettings& Settings() { return iSettings; }

    inline CEikonEnv* EikonEnv() { return iEnv; }

    inline RApaLsSession& LsSession() { return iLs; }

    inline CSampleEntryArray* SampleEntryArray() { return iSampleEntryArray; } 

protected:

    RTimer                          iTimer;

    CEikonEnv*                      iEnv;

    TPerfMonSettings                iSettings;

    RApaLsSession                   iLs;

    CSampleEntryArray*              iSampleEntryArray;

    TTime                           iStartTime;

    TInt                            iCurrentCPUMode;

    RThread                         iNullThread;

    RThread                         iCPULoadThread;

	TBool                           iCPULoadCalibrating;

	TInt                            iCPULoadCalibrationCounter;

	TInt64                          iCPULoadMaxValue;

	TInt64                          iCPULoadPreviousValue;    

	TInt64                          iCPULoadCounter;

    TTime                           iPreviousTime;

    TBool                           iLogFileInitialized;

    RFile                           iLogFile;

    };

#endif