// dobject_compat.cpp

// 

// Copyright (c) 2007 - 2010 Accenture. All rights reserved.

// This component and the accompanying materials are made available

// under the terms of the "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:

// Accenture - Initial contribution

//

#include "dobject_compat.h"

extern TBool gRunningWithOldDefinition = ETrue;

NONSHARABLE_CLASS(DObjectWithPaddingOnly) : public DObject

	{

public:

	DOBJECT_PADDING;

	};

TBool CalculateDObjectSize()

	{

	DObjectWithPaddingOnly* obj = new DObjectWithPaddingOnly;

	if (!obj) return EFalse;

	// objectId points to the mem location where iObjectId will be. So if running on a system with the new size DOBject it will always be non-zero (because objectIds are set in the DObject constructor, and are always non-zero), but if running on earlier systems it will be zero because DBase zero-fills the object

	TUint64& objectId = *reinterpret_cast<TUint64*>((TUint8*)&obj->iName + sizeof(HBuf*));

	if (objectId != 0)

		{

		//Kern::Printf("Detected MemoryAccess is running with new larger DObject");

		gRunningWithOldDefinition = EFalse;

		}

	else

		{

		//Kern::Printf("Detected MemoryAccess is running with old-format DObject");		

		}

	obj->Close(NULL);

	return ETrue;

	}