1 // dobject_compat.cpp

     2 // 

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

     4 // This component and the accompanying materials are made available

     5 // under the terms of the "Eclipse Public License v1.0"

     6 // which accompanies this distribution, and is available

     7 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 // 

     9 // Initial Contributors:

    10 // Accenture - Initial contribution

    11 //

    12 

    13 #include "dobject_compat.h"

    14 

    15 extern TBool gRunningWithOldDefinition = ETrue;

    16 

    17 NONSHARABLE_CLASS(DObjectWithPaddingOnly) : public DObject

    18 	{

    19 public:

    20 	DOBJECT_PADDING;

    21 	};

    22 

    23 TBool CalculateDObjectSize()

    24 	{

    25 	DObjectWithPaddingOnly* obj = new DObjectWithPaddingOnly;

    26 	if (!obj) return EFalse;

    27 	

    28 	// 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

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

    30 	

    31 	if (objectId != 0)

    32 		{

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

    34 		gRunningWithOldDefinition = EFalse;

    35 		}

    36 	else

    37 		{

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

    39 		}

    40 	obj->Close(NULL);

    41 	return ETrue;

    42 	}