/*

* 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:

*

*/

#include "MemSpySettings.h"

// System includes

#include <e32svr.h>

#include <s32file.h>

// Engine includes

#include <memspy/engine/memspyengine.h>

#include <memspy/engine/memspyenginelogger.h>

#include <memspy/engine/memspyenginehelperprocess.h>

#include <memspy/engine/memspyenginehelpersysmemtracker.h>

#include <memspysession.h>

// Constants

// Version 03 dumped some of the system wide memory tracker settings

const TInt KMemSpySettingsFileFormatVersion = 6;

CMemSpySettings::CMemSpySettings( RFs& aFsSession, RMemSpySession& aSession )

    {	

    }

CMemSpySettings::~CMemSpySettings()

    TRACE( RDebug::Printf( "CMemSpySettings::~CMemSpySettings() - START" ) );

    TRAP_IGNORE( StoreSettingsL() );

    }

void CMemSpySettings::ConstructL()

    TRACE( RDebug::Print( _L("CMemSpySettings::ConstructL() - START") ) );

    TRAP_IGNORE( RestoreSettingsL() );

    }

CMemSpySettings* CMemSpySettings::NewL( RFs& aFsSession, RMemSpySession& aSession )

    {

    CMemSpySettings* self = new(ELeave) CMemSpySettings( aFsSession, aSession );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

void CMemSpySettings::GetSettingsFileNameL( TDes& aFileName )

    {

    GetSettingsPathL( aFileName );

    aFileName.Append( KMemSpySettingsFileName );

    TRACE( RDebug::Print( _L("CMemSpySettings::GetSettingsFileNameL() - aFileName: %S"), &aFileName ) );

    }

void CMemSpySettings::GetSettingsPathL( TDes& aPath )

    {

    TRACE( RDebug::Print( _L("CMemSpySettings::GetSettingsPathL() - START") ) );

    aPath.Zero();

    // Get private data cage path

    TInt err = iFsSession.PrivatePath( aPath );

    TRACE( RDebug::Print( _L("CMemSpySettings::GetSettingsPathL() - priv path err: %d"), err ) );

    User::LeaveIfError( err );

    // Combine with C: drive

    const TDriveUnit cDrive( EDriveC );

    const TDriveName cDriveName( cDrive.Name() );

    aPath.Insert( 0, cDriveName );

    iFsSession.MkDirAll( aPath );

    TRACE( RDebug::Print( _L("CMemSpySettings::GetSettingsPathL() - END - %S"), &aPath ) );

    }

RFile CMemSpySettings::SettingsFileLC( TBool aReplace )

    {

    TRACE( RDebug::Print( _L("CMemSpySettings::SettingsFileLC() - START - aReplace: %d"), aReplace ) );

    TFileName* fileName = new(ELeave) TFileName();

    CleanupStack::PushL( fileName );

    GetSettingsFileNameL( *fileName );

    TRACE( RDebug::Print( _L("CMemSpySettings::SettingsFileLC() - fileName: %S"), fileName ) );

    RFile file;

    TInt error = KErrNone;

    //

    if  ( aReplace )

        {

        error = file.Replace( iFsSession, *fileName, EFileWrite );

        TRACE( RDebug::Print( _L("CMemSpySettings::SettingsFileLC() - replace err: %d"), error ) );

        }

    else

        {

        error = file.Open( iFsSession, *fileName, EFileWrite );

        TRACE( RDebug::Print( _L("CMemSpySettings::SettingsFileLC() - open err: %d"), error ) );

        //

        if  ( error == KErrNotFound )

            {

            error = file.Create( iFsSession, *fileName, EFileWrite );

            }

        }

    //

    User::LeaveIfError( error );

    CleanupStack::PopAndDestroy( fileName );

    CleanupClosePushL( file );

    //

    TRACE( RDebug::Print( _L("CMemSpySettings::SettingsFileLC() - END") ) );

    return file;

    }

void CMemSpySettings::StoreSettingsL()

    {

    TRACE( RDebug::Printf( "CMemSpySettings::StoreSettingsL() - START" ) );

    RFile file = SettingsFileLC( ETrue );

    RFileWriteStream stream( file );

    CleanupStack::Pop(); // file

    CleanupClosePushL( stream );

    // Verion info

    stream.WriteInt32L( KMemSpySettingsFileFormatVersion );

    // Get SWMT config

    // Write SWMT settings

    // Write memory tracking auto-start process list

    const RArray<TUid>& processUidList = iEngine.HelperProcess().MemoryTrackingAutoStartProcessList();

    stream.WriteInt32L( processUidList.Count() );

    for( TInt i=0; i<processUidList.Count(); i++ )

        {

        const TUid uid = processUidList[ i ];

        TRACE( RDebug::Printf( "CMemSpySettings::StoreSettingsL() - process tracker uid[%02d]: 0x%08x", i, uid.iUid ) );

        stream << uid;

        }

    // Write memory tracking categories

    // Write heap tracking thread name filter

    if ( swmtConfig.iThreadNameFilter.Length() > 0 )

        {

        stream.WriteL( swmtConfig.iThreadNameFilter, swmtConfig.iThreadNameFilter.Length() );

        }

    // Write mode

    stream.WriteInt32L( swmtConfig.iMode );

    stream.CommitL();

    }

void CMemSpySettings::RestoreSettingsL()

    RFile file = SettingsFileLC();

    RFileReadStream stream( file );

    CleanupStack::Pop(); // file

    // Version info

    const TInt version = stream.ReadInt32L(); // discarded for now

    TRACE( RDebug::Printf( "CMemSpySettings::RestoreSettingsL() - version: %d", version ) );

    // Engine settings

    TMemSpySinkType type = static_cast< TMemSpySinkType >( stream.ReadUint8L() );

    TRACE( RDebug::Printf( "CMemSpySettings::RestoreSettingsL() - read sinkType: %d", type ) );

    // Set SWMT config

    TMemSpyEngineHelperSysMemTrackerConfig swmtConfig;

    swmtConfig.iDumpData = static_cast< TBool >( stream.ReadUint8L() );

    if  ( version < 3 )

        {

        // Restore but ignore old delta tracker settings which aren't used anymore

        //

        static_cast< TBool >( stream.ReadUint8L() );

        static_cast< TBool >( stream.ReadUint8L() );

        static_cast< TBool >( stream.ReadUint8L() );

        }

    // Restore memory tracking auto-start process uids if file format supports it...

    if ( version >= 2 )

        {

        CleanupClosePushL( list );

        //

        const TInt count = stream.ReadInt32L();

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

            {

            TUid processUid;

            stream >> processUid;

            }

        //

        CleanupStack::PopAndDestroy( &list );

        }

    // Restore memory tracking categories 

    if ( version > 3 )

        {

        swmtConfig.iEnabledCategories = stream.ReadInt32L();

        }

    // Write heap tracking thread name filter 

    if ( version > 4 )

        {

        TInt len = stream.ReadInt32L();

        if ( len > 0 )

            {

            stream.ReadL( swmtConfig.iThreadNameFilter, len );

            }

        }

    // Write mode

    if ( version > 5 )

        {

        swmtConfig.iMode = (TMemSpyEngineHelperSysMemTrackerConfig::TMemSpyEngineSysMemTrackerMode)stream.ReadInt32L();

        }

    }