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