/*

* 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 "MemSpyDriverLogChanClientServer.h"

// System includes

#include <memspy/driver/memspydriverobjectsshared.h>

// Shared includes

#include "MemSpyDriverOpCodes.h"

#include "MemSpyDriverObjectsInternal.h"

// User includes

#include "MemSpyDriverUtils.h"

#include "MemSpyDriverOSAdaption.h"

DMemSpyDriverLogChanClientServer::DMemSpyDriverLogChanClientServer( DMemSpyDriverDevice& aDevice, DThread& aThread )

:   DMemSpyDriverLogChanContainerBase( aDevice, aThread )

    {

	TRACE( Kern::Printf("DMemSpyDriverLogChanChunks::DMemSpyDriverLogChanChunks() - this: 0x%08x", this ));

    }

DMemSpyDriverLogChanClientServer::~DMemSpyDriverLogChanClientServer()

	{

	TRACE( Kern::Printf("DMemSpyDriverLogChanClientServer::~DMemSpyDriverLogChanClientServer() - START - this: 0x%08x", this ));

	TRACE( Kern::Printf("DMemSpyDriverLogChanClientServer::~DMemSpyDriverLogChanClientServer() - END - this: 0x%08x", this ));

	}

TInt DMemSpyDriverLogChanClientServer::Request( TInt aFunction, TAny* a1, TAny* a2 )

	{

	TInt r = DMemSpyDriverLogChanContainerBase::Request( aFunction, a1, a2 );

    if  ( r == KErrNone )

        {

	    switch( aFunction )

		    {

	    case EMemSpyDriverOpCodeClientServerGetServerSessionHandles:

            r = GetServerSessionHandles( (TMemSpyDriverInternalServerSessionHandleParams*) a1 );

            break;

	    case EMemSpyDriverOpCodeClientServerGetServerSessionInfo:

            r = GetServerSessionInfo( a1, (TMemSpyDriverServerSessionInfo*) a2 );

            break;

        default:

            r = KErrNotSupported;

		    break;

		    }

        }

    //

    return r;

	}

TBool DMemSpyDriverLogChanClientServer::IsHandler( TInt aFunction ) const

    {

    return ( aFunction > EMemSpyDriverOpCodeClientServerBase && aFunction < EMemSpyDriverOpCodeClientServerEnd );

    }

TInt DMemSpyDriverLogChanClientServer::GetServerSessionHandles( TMemSpyDriverInternalServerSessionHandleParams* aParams )

	{

    TMemSpyDriverInternalServerSessionHandleParams params;

    TInt r = Kern::ThreadRawRead( &ClientThread(), aParams, &params, sizeof(TMemSpyDriverInternalServerSessionHandleParams) );

    if  ( r != KErrNone )

        {

    	TRACE( Kern::Printf("DMemSpyDriverLogChanClientServer::GetServerSessionHandles() - END - params read error: %d", r));

        return r;

        }

    DMemSpyDriverOSAdaptionDServer& serverAdaption = OSAdaption().DServer();

	const TInt maxCount = params.iMaxCount;

    NKern::ThreadEnterCS();

    DObject* serverHandle = (DObject*) params.iServerHandle;

    DServer* server = static_cast<DServer*>(CheckedOpen(EMemSpyDriverContainerTypeServer, serverHandle));

    if (server == NULL)

        {

    	Kern::Printf("DMemSpyDriverLogChanClientServer::GetServerSessionHandles() - END - server not found");

        NKern::ThreadLeaveCS();

        return KErrNotFound;

        }

	ResetTempHandles();

    NKern::LockSystem(); // Iterating session queue requires system lock

    // Iterate through this server's sessions, writing back session pointer (handle)

    // to client

    SDblQue& serverQueue = serverAdaption.GetSessionQueue( *server );

    SDblQueLink* anchor = &serverQueue.iA;

    SDblQueLink* link = serverQueue.First();

    while( link != anchor )

        {

		DSession* session = serverAdaption.GetSession( link );

        // Found a match in the specified container. Write the object's handle (aka the object address)

        // back to the client address space

        if  ( session )

            {

            AddTempHandle( session );

            }

        // Get next item

        link = link->iNext;

        }

    NKern::UnlockSystem();

	server->Close(NULL);

	NKern::ThreadLeaveCS();

    // This variable holds the number of handles that we have already

	// written to the client-side.

	TInt currentWriteIndex = 0;

	const TInt handleCount = TempHandleCount();

    TRACE( Kern::Printf("DMemSpyDriverLogChanClientServer::GetServerSessionHandles - writing %d handles to client...", handleCount ) );

    for( ; currentWriteIndex<handleCount && r == KErrNone && currentWriteIndex < maxCount; )

        {

        TAny* handle = TempHandleAt( currentWriteIndex );

        r = Kern::ThreadRawWrite( &ClientThread(), params.iSessionHandles + currentWriteIndex, &handle, sizeof(TAny*) );

        if  (r == KErrNone)

            {

            ++currentWriteIndex;

            }

        }

	if  ( r == KErrBadDescriptor )

        {

        MemSpyDriverUtils::PanicThread( ClientThread(), EPanicBadDescriptor );

        }

    else

        {

        const TInt finalWrite = Kern::ThreadRawWrite( &ClientThread(), params.iSessionCountPtr, &currentWriteIndex, sizeof(TInt) );

        if  ( r == KErrNone )

            {

            r = finalWrite;

            }

        }

	TRACE( Kern::Printf("DMemSpyDriverLogChanClientServer::GetServerSessionHandles() - END - r: %d", r));

	return r;

    }

TInt DMemSpyDriverLogChanClientServer::GetServerSessionInfo( TAny* aSessionHandle, TMemSpyDriverServerSessionInfo* aParams )

    {

    TMemSpyDriverServerSessionInfo params;

    TInt r = Kern::ThreadRawRead( &ClientThread(), aParams, &params, sizeof(TMemSpyDriverServerSessionInfo) );

    if  ( r != KErrNone )

        {

    	TRACE( Kern::Printf("DMemSpyDriverLogChanClientServer::GetServerSessionInfo() - END - params read error: %d", r));

        return r;

        }

    DMemSpyDriverOSAdaptionDSession& sessionAdaption = OSAdaption().DSession();

    DMemSpyDriverOSAdaptionDThread& threadAdaption = OSAdaption().DThread();

    DMemSpyDriverOSAdaptionDProcess& processAdaption = OSAdaption().DProcess();

	NKern::ThreadEnterCS();

    DSession* session = (DSession*)CheckedOpen(EMemSpyDriverContainerTypeSession, (DObject*)aSessionHandle);

    if (session == NULL )

        {

    	Kern::Printf("DMemSpyDriverLogChanClientServer::GetServerSessionInfo() - END - session not found");

        NKern::ThreadLeaveCS();

        return KErrNotFound;

        }

    session->FullName( params.iName );

    // Get owner type and id

    DObject* sessionOwner = sessionAdaption.GetOwner( *session );

    if  ( sessionOwner )

        {

        const TObjectType objectType = sessionAdaption.GetObjectType( *sessionOwner );

        if  ( objectType == EProcess )

            {

            DProcess* sessionProcess = (DProcess*) sessionOwner;

            //

            params.iOwnerId = processAdaption.GetId( *sessionProcess );

            params.iOwnerType = TMemSpyDriverServerSessionInfo::EOwnerProcess;

            }

        else if ( objectType == EThread )

            {

            DThread* sessionThread = (DThread*) sessionOwner;

            //

            params.iOwnerId = threadAdaption.GetId( *sessionThread );

            params.iOwnerType = TMemSpyDriverServerSessionInfo::EOwnerThread;

            }

        }

    else

        {

        params.iOwnerId = -1;

        params.iOwnerType = TMemSpyDriverServerSessionInfo::EOwnerNone;

        }

    // Other attributes

    params.iSessionType = sessionAdaption.GetSessionType( *session );

    params.iAddress = (TUint8*)session;

	session->Close(NULL);

	NKern::ThreadLeaveCS();

    r = Kern::ThreadRawWrite( &ClientThread(), aParams, &params, sizeof(TMemSpyDriverServerSessionInfo) );

	TRACE( Kern::Printf("DMemSpyDriverLogChanClientServer::GetServerSessionInfo() - END - r: %d", r));

	return r;

    }