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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.cpp
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//
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//
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#include "sf_pool.h"
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#ifdef SYMBIAN_F32_ENHANCED_CHANGE_NOTIFICATION
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#include "sf_notifier.h"
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#endif //SYMBIAN_F32_ENHANCED_CHANGE_NOTIFICATION
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//=====CFsPool=============================
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template <class T>
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299
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CFsPool<T>* CFsPool<T>::New(TInt aPoolSize, T*(*aNewFunction)())
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0
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{
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CFsPool<T>* pool = new CFsPool<T>();
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if(!pool)
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return NULL;
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299
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TInt r = pool->Construct(aPoolSize,aNewFunction);
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0
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if(r!=KErrNone)
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{
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delete pool;
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return NULL;
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}
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else
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return pool;
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}
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template <class T>
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CFsPool<T>::CFsPool()
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{
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}
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template <class T>
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299
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TInt CFsPool<T>::Construct(TInt aPoolSize,T*(*aNewFunction)())
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0
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{
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299
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TInt r = iPoolLock.CreateLocal(aPoolSize);
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0
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if(r != KErrNone)
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return r;
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299
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r = iFreeList.Reserve(aPoolSize);
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0
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if(r != KErrNone)
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return r;
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TInt i = 0;
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while(i < aPoolSize)
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{
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299
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T* t = aNewFunction();
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0
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if(!t)
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{
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return KErrNoMemory;
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}
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245
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r = iFreeList.Append(t);
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if(r != KErrNone)
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{
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return r;
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}
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0
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i++;
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}
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return KErrNone;
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}
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//This should only be called by the Manager when it holds
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//the manager's write lock meaning that all of the
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//blocks should be unallocated
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template <class T>
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CFsPool<T>::~CFsPool()
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{
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for(TInt i=0; i < iFreeList.Count(); i++)
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{
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delete iFreeList[i];
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}
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iFreeList.Close();
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}
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template <class T>
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T* CFsPool<T>::Allocate()
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{
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Lock(); //Waits when there are no free blocks left
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TInt lastIndex = iFreeList.Count()-1;
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T* t = iFreeList[lastIndex];
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iFreeList.Remove(lastIndex);
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return t;
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}
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template <class T>
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void CFsPool<T>::Free(T* aBlock)
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{
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iFreeList.Append(aBlock);
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Unlock();
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}
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template <class T>
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void CFsPool<T>::Lock()
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{
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iPoolLock.Wait();
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}
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template <class T>
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void CFsPool<T>::Unlock()
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{
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iPoolLock.Signal();
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}
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//These are needed here because the compiler needs to know which types will be
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//instantiating the template (because it's in a separate file)
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#ifdef SYMBIAN_F32_ENHANCED_CHANGE_NOTIFICATION
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template class CFsPool<CFsNotificationBlock>;
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#endif //SYMBIAN_F32_ENHANCED_CHANGE_NOTIFICATION
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299
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template class CFsPool<CFsNotificationInfo>;
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