persistentstorage/sql/SRC/Server/IPC/IPCStream.h
author William Roberts <williamr@symbian.org>
Wed, 03 Feb 2010 12:02:34 +0000
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parent 0 08ec8eefde2f
permissions -rw-r--r--
Add EPL headers
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// Copyright (c) 2005-2009 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 __IPCSTREAM_H__
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#define __IPCSTREAM_H__
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#include <s32mem.h>
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#include "IpcDefs.h"
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/**
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IPC, server-side class.
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HIpcStream class is part of the server-side IPC framework, used for transferring large blocks of 
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data to/from the client side.
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@internalComponent
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*/
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NONSHARABLE_CLASS(HIpcStream)
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	{
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public:
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	inline HIpcStream(MStreamBuf* aHost, TInt aReadPos);
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	~HIpcStream();
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	TInt ReadL(const RMessage2& aMessage);	
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	void WriteL(const RMessage2& aMessage);	
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	inline TInt SizeL();
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	void SynchL();
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private:
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	MStreamBuf& 			iHost;
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	TInt 					iRPos;
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	TInt 					iWPos;
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	};
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/**
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IPC, server-side class.
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HIpcReadBuf class is part of the server-side IPC framework, used for transferring large blocks of 
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data to the client side.
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The difference between HIpcReadBuf and HIpcBufBuf is that HIpcReadBuf does not allocate memory for
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the data. It keeps just a pointer to the data which needs to be sent to the client side.
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@see HIpcStream
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@internalComponent
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*/
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NONSHARABLE_CLASS(HIpcReadBuf) : public TMemBuf
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	{
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public:
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	inline static HIpcReadBuf* NewL(const TDesC8& aDes);
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private:
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	inline HIpcReadBuf(const TDesC8& aDes);
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	virtual void DoRelease();
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	};
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#include "IPCStream.inl"
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#endif//__IPCSTREAM_H__