userlibandfileserver/fileserver/sfile/sf_pool.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 18 Jan 2010 21:31:10 +0200
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// Copyright (c) 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 the License "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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// f32\sfile\sf_pool.h
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// 
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//
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#include "sf_std.h"
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#ifndef SF_POOL_H_
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#define SF_POOL_H_
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/**
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 * @internalTechnology
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 */
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template <class T>
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class CFsPool
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	{
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public:
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	static CFsPool<T>* New(TInt aPoolSize);
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	~CFsPool();
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	/*
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	 * Allocate returns a pointer of class T.
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	 * The pointer returned is removed from the pool.
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	 * When the pool is empty this function will wait.
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	 */
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	T* Allocate();
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	/*
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	 * Following a call to Allocate,
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	 * Free teturns an object-pointer of type T to the pool.
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	 */
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	void Free(T* aBlock);
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private:
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	CFsPool();
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	TInt Construct(TInt aPoolSize);
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	void Lock();
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	void Unlock();
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	RSemaphore iPoolLock;
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	RPointerArray<T> iFreeList;
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	};
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#endif /* SF_POOL_H_ */