userlibandfileserver/fileserver/sfile/sf_pool.h
changeset 0 a41df078684a
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     1 // Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
       
     2 // All rights reserved.
       
     3 // This component and the accompanying materials are made available
       
     4 // under the terms of the License "Eclipse Public License v1.0"
       
     5 // which accompanies this distribution, and is available
       
     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     7 //
       
     8 // Initial Contributors:
       
     9 // Nokia Corporation - initial contribution.
       
    10 //
       
    11 // Contributors:
       
    12 //
       
    13 // Description:
       
    14 // f32\sfile\sf_pool.h
       
    15 // 
       
    16 //
       
    17 
       
    18 #include "sf_std.h"
       
    19 
       
    20 #ifndef SF_POOL_H_
       
    21 #define SF_POOL_H_
       
    22 
       
    23 /**
       
    24  * @internalTechnology
       
    25  */
       
    26 template <class T>
       
    27 class CFsPool
       
    28 	{
       
    29 public:
       
    30 	static CFsPool<T>* New(TInt aPoolSize);
       
    31 	~CFsPool();
       
    32 	
       
    33 	/*
       
    34 	 * Allocate returns a pointer of class T.
       
    35 	 * The pointer returned is removed from the pool.
       
    36 	 * When the pool is empty this function will wait.
       
    37 	 */
       
    38 	T* Allocate();
       
    39 	
       
    40 	/*
       
    41 	 * Following a call to Allocate,
       
    42 	 * Free teturns an object-pointer of type T to the pool.
       
    43 	 */
       
    44 	void Free(T* aBlock);
       
    45 private:
       
    46 	CFsPool();
       
    47 	TInt Construct(TInt aPoolSize);
       
    48 	
       
    49 	void Lock();
       
    50 	void Unlock();
       
    51 	RSemaphore iPoolLock;
       
    52 		
       
    53 	RPointerArray<T> iFreeList;
       
    54 	};
       
    55 
       
    56 #endif /* SF_POOL_H_ */