--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/perfsrv/memspy/Driver/Kernel/Source/MemSpyDriverStreamWriter.cpp	Fri Sep 17 08:38:31 2010 +0300
@@ -0,0 +1,180 @@
+/*
+* 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 "MemSpyDriverStreamWriter.h"
+
+// User includes
+#include "MemSpyDriverUtils.h"
+#include "MemSpyDriverXferBuffer.h"
+
+
+
+RMemSpyMemStreamWriter::RMemSpyMemStreamWriter()
+:   iBuffer( NULL ), iCurrent( NULL ), iMax( 0 ), iMark( NULL ), iCommitted( 0 )
+    {
+    }
+
+
+RMemSpyMemStreamWriter::RMemSpyMemStreamWriter( DMemSpyDriverXferBuffer& aBuffer )
+:   iBuffer( &aBuffer ), iMark( NULL ), iCommitted( 0 )
+    {
+    iCurrent = iBuffer->Ptr();
+    iMax = iCurrent + iBuffer->Size();
+    TRACE( Kern::Printf("RMemSpyMemStreamWriter::RMemSpyMemStreamWriter() - current: 0x%08x, max: 0x%08x, size: %d", iCurrent, iMax, iBuffer->Size() ) );
+    }
+
+
+void RMemSpyMemStreamWriter::Close()
+    {
+    iBuffer = NULL;
+    iMark = NULL;
+    }
+
+
+TInt RMemSpyMemStreamWriter::WriteAndClose( TDes8* aDestinationPointer )
+    {
+    __ASSERT_ALWAYS( IsOpen(), MemSpyDriverUtils::Fault( __LINE__ ) );
+    //
+    const TInt ret = iBuffer->WriteToClient( aDestinationPointer, iCommitted );
+    Close();
+    //
+    return ret;
+    }
+
+
+TInt32* RMemSpyMemStreamWriter::WriteInt32( TInt32 aValue )
+    {
+    TInt32* ret = NULL;
+    //
+    __ASSERT_ALWAYS( IsOpen(), MemSpyDriverUtils::Fault( __LINE__ ) );
+    if  ( !IsFull() )
+        {
+        ret = (TInt32*) iCurrent;
+        *ret = aValue;
+        IncrementPos( sizeof( TInt32 ) );
+        }
+    else
+        {
+        //TRACE( Kern::Printf( "RMemSpyMemStreamWriter::WriteInt32() - asked to write: 0x%08x from fn: 0x%08x BUT AM FULL", aValue, __return_address() ) );
+        }
+    //
+    return ret;
+    }
+
+
+TUint32* RMemSpyMemStreamWriter::WriteUint32( TUint32 aValue )
+    {
+    TUint32* ret = NULL;
+    //
+    __ASSERT_ALWAYS( IsOpen(), MemSpyDriverUtils::Fault( __LINE__ ) );
+    if  ( !IsFull() )
+        {
+        ret = (TUint32*) iCurrent;
+        *ret = aValue;
+        IncrementPos( sizeof( TUint32 ) );
+        }
+    else
+        {
+        //TRACE( Kern::Printf( "RMemSpyMemStreamWriter::WriteUint32() - asked to write: 0x%08x from fn: 0x%08x BUT AM FULL", aValue, __return_address() ) );
+        }
+    //
+    return ret;
+    }
+
+
+TUint8* RMemSpyMemStreamWriter::Current() const
+    {
+    __ASSERT_ALWAYS( IsOpen(), MemSpyDriverUtils::Fault( __LINE__ ) );
+    return iCurrent;
+    }
+
+
+void RMemSpyMemStreamWriter::Seek( TInt aPosition )
+    {
+    __ASSERT_ALWAYS( IsOpen(), MemSpyDriverUtils::Fault( __LINE__ ) );
+    TUint8* pos = iBuffer->Ptr() + aPosition;
+    __ASSERT_ALWAYS( pos < iMax, MemSpyDriverUtils::Fault( __LINE__ ) );
+    iCurrent = pos;
+    }
+
+
+TUint32 RMemSpyMemStreamWriter::Remaining() const
+    {
+    __ASSERT_ALWAYS( IsOpen(), MemSpyDriverUtils::Fault( __LINE__ ) );
+    const TUint32 max = reinterpret_cast< TUint32 >( iMax );
+    const TUint32 cur = reinterpret_cast< TUint32 >( iCurrent );
+    TRACE( Kern::Printf("RMemSpyMemStreamWriter::Remaining() - current: 0x%08x, max: 0x%08x, ret: %d", cur, max, ( max - cur ) ) );
+    return ( max - cur );
+    }
+
+
+void RMemSpyMemStreamWriter::MarkSet()
+    {
+    __ASSERT_ALWAYS( iMark == NULL, MemSpyDriverUtils::Fault( __LINE__ ) );
+    iMark = iCurrent;
+    }
+
+
+void RMemSpyMemStreamWriter::MarkResume()
+    {
+    __ASSERT_ALWAYS( iMark != NULL, MemSpyDriverUtils::Fault( __LINE__ ) );
+    iCurrent = iMark;
+    iMark = NULL;
+    }
+
+
+TBool RMemSpyMemStreamWriter::IsFull() const
+    {
+    __ASSERT_ALWAYS( IsOpen(), MemSpyDriverUtils::Fault( __LINE__ ) );
+    const TBool ret = ( iCurrent >= iMax );
+    return ret;
+    }
+
+
+TBool RMemSpyMemStreamWriter::IsOpen() const
+    {
+    const TBool ret = ( iBuffer && iCurrent && iMax );
+    return ret;
+    }
+
+
+RMemSpyMemStreamWriter& RMemSpyMemStreamWriter::operator=( const RMemSpyMemStreamWriter& aCopy )
+    {
+    iBuffer = aCopy.iBuffer;
+    iMark = aCopy.iMark;
+    iCommitted = aCopy.iCommitted;
+    iCurrent = aCopy.iCurrent;
+    iMax = aCopy.iMax;
+    //
+    return *this;
+    }
+
+
+void RMemSpyMemStreamWriter::IncrementPos( TInt aAmount )
+    {
+    __ASSERT_ALWAYS( IsOpen(), MemSpyDriverUtils::Fault( __LINE__ ) );
+    if  ( iCurrent + aAmount > iMax )
+        {
+        Kern::Printf("RMemSpyMemStreamWriter::IncrementPos() - OVERFLOW - current: 0x%08x, max: 0x%08x, aAmount: %d", iCurrent, iMax, aAmount );
+        }
+
+    iCurrent += aAmount;
+    iCommitted += aAmount;
+    }
+
+
+