sl@0: // Copyright (c) 2007-2009 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 "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: //
sl@0: 
sl@0: #ifndef __D_SHAREDCHUNK_H__
sl@0: #define __D_SHAREDCHUNK_H__
sl@0: 
sl@0: #include <e32cmn.h>
sl@0: #ifndef __KERNEL_MODE__
sl@0: #include <e32std.h>
sl@0: #endif
sl@0: 
sl@0: _LIT(KSharedChunkLddName,"D_SHAREDCHUNK");
sl@0: 
sl@0: enum TCreateFlags
sl@0: 	{
sl@0: 	ESingle				= 0x00,
sl@0: 	EMultiple			= 0x01,
sl@0: 	EOwnsMemory			= 0x02,
sl@0: 	EBadType			= 0x80,
sl@0: 	ECreateFlagsMask	= 0xff
sl@0: 	};
sl@0: 
sl@0: enum TCacheAttribute
sl@0: 	{
sl@0: 	/** CPU cached */
sl@0: 	ECached = 0,
sl@0: 	/** Non CPU cached */
sl@0: 	ENotCached = 1
sl@0: 	};
sl@0: 
sl@0: enum TCommitType
sl@0: 	{
sl@0: 	ENonContiguous			= 0x00,
sl@0: 	EContiguous				= 0x01,
sl@0: 	ECommitTypeMask			= 0x0f
sl@0: 	};
sl@0: 
sl@0: class RSharedChunkLdd : public RBusLogicalChannel
sl@0: 	{
sl@0: public:
sl@0: 	enum TControl
sl@0: 		{
sl@0: 		ECreateChunk,
sl@0: 		EGetChunkHandle,
sl@0: 		ECommitMemory,
sl@0: 		ECloseChunk,
sl@0: 		ECacheAttribute,
sl@0: 		EContiguousAttribute,
sl@0: 		ECloseChunkHandle
sl@0: 		};
sl@0: 
sl@0: 
sl@0: #ifndef __KERNEL_MODE__
sl@0: public:
sl@0: 	inline TInt Open()
sl@0: 		{ return DoCreate(KSharedChunkLddName,TVersion(),KNullUnit,NULL,NULL,EOwnerProcess,ETrue); }
sl@0: 	inline TInt CreateChunk(TInt aSize, TAny** aKernelAddress=0)
sl@0: 		{ return DoControl(ECreateChunk,(TAny*)aSize,aKernelAddress); }
sl@0: 	inline TInt GetChunkHandle(RChunk& aChunk)
sl@0: 		{ return aChunk.SetReturnedHandle(DoControl(EGetChunkHandle)); }
sl@0: 	inline TInt CommitMemory(TInt aOffset, TInt aSize)
sl@0: 		{ return DoControl(ECommitMemory,(TAny*)aOffset,(TAny*)aSize); }
sl@0: 	inline TInt CloseChunk()
sl@0: 		{ return DoControl(ECloseChunk); }
sl@0: 	inline TInt GetCacheAttribute()
sl@0: 		{return DoControl(ECacheAttribute);}
sl@0: 	inline TBool GetContiguousAttribute()
sl@0: 		{return DoControl(EContiguousAttribute);}
sl@0: 	inline TInt CloseChunkHandle(RChunk aChunk)
sl@0: 		{ return DoControl(ECloseChunkHandle,(TAny*)aChunk.Handle()); }
sl@0: #endif
sl@0: 	};
sl@0: 
sl@0: 
sl@0: #endif