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// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of the License "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// f32test\concur\cfafshmem.cpp
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// Definition of the THMem class member functions.
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//
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//
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#include "cfafshmem.h"
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THMem::THMem(void * aNewMemPtr) : iMemPtr(aNewMemPtr),
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//iNoMess(ETrue),
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//threadHandle(NO_THREAD),
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iBaseOffset(KNoOffset)
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/**
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* Constructor. Initialises the members of THMem.
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*
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* @param aNewMemPtr Pointer to the memory that this THMem will
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* represent
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* @internalComponent
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*/
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{
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iMessage=NULL;
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}
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THMem::THMem(const void * aNewMemPtr,const RMessagePtr2& aMessage,int aNewOffset)
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: iMemPtr((void*)aNewMemPtr), iBaseOffset(aNewOffset)
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/**
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* Constructor. Initialises the members of THMem.
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*
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* @param aNewMemPtr Pointer to the memory that this THMem will
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* represent
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* @param aMessage
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* @param aNewOffset
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* @internalComponent
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*/
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{
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iMessage=(RMessagePtr2*)&aMessage;
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}
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TInt THMem::Read(void *aBuf, TUint32 aLength, TUint aOffset) const
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/**
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* Reads a chunk of memory from the THMem.
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*
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* @param aBuf goal buffer bointer
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* @param aLength how many bytes that will be read from
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* the THMem
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* @param aOffset offset into the THMem where the function
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* will start reading
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* @return Error code - KErrNone on success
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* @internalComponent
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*/
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{
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if(iMessage==NULL)
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{
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memcpy(aBuf, ((TUint8*)iMemPtr + aOffset), (TInt)aLength);
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// Always return success
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return KErrNone;
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}
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else if ((iMessage == NULL) || (iMessage->Handle() == KLocalMessageHandle))
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{
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TUint8* ptr = (TUint8*) ((TDes8*) iMemPtr)->Ptr();
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memcpy(aBuf, ptr + iBaseOffset + aOffset, (TInt)aLength);
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// Always return success
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return KErrNone;
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}
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else
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{
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#if defined(__SYMBIAN32__)
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// Create EPOC memory representation
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TPtr8 mem((TUint8*)aBuf,aLength);
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// Create EPOC memory representation
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TRAPD(res,iMessage->ReadL(0,mem, iBaseOffset + aOffset));
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// Return error code
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return (TInt)res;
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#else
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LFFS_ASSERT(0);
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return E_GENERAL;
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#endif
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}
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}
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TInt THMem::Write(const void *aBuf, TUint32 aLength, TUint32 aOffset)
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/**
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* Writes a chunk of memory to the THMem.
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*
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* @param aBuf source buffer bointer
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* @param aLength how many bytes that will be written to
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* the THMem
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* @param aOffset offset into the THMem where the function
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* will start writing
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* @return Error code - KErrNone on success
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* @internalComponent
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*/
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{
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if (iMessage == NULL)
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{
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memcpy(((TUint8*)iMemPtr + aOffset), aBuf, (TInt)aLength);
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// Always return success
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return KErrNone;
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}
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else if ((iMessage == NULL) || (iMessage->Handle() == KLocalMessageHandle))
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{
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TUint8* ptr = (TUint8*) ((TDes8*) iMemPtr)->Ptr();
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memcpy(ptr + iBaseOffset + aOffset, aBuf, (TInt)aLength);
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return KErrNone;
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}
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else
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{
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#if defined(__SYMBIAN32__)
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// Create EPOC memory representation
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TPtrC8 mem((TUint8*)aBuf,aLength);
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// Use message to write back to client thread
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TRAPD( res,iMessage->WriteL(0,mem, iBaseOffset + aOffset) );
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// Return error code
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return (TInt)res;
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#else
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LFFS_ASSERT(0);
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return E_GENERAL;
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#endif
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}
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}
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