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