webengine/osswebengine/MemoryManager/Src/MemoryManager.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 17 Dec 2009 09:20:16 +0200
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permissions -rw-r--r--
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/*
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* Copyright (c) 2006 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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*
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*
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*/
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// INCLUDE FILES
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#include "MemoryManager.h"
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#include "MemoryPool.h"
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#include "FastAllocator.h"
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#include "MemoryLogger.h"
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// CONSTANTS
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_LIT( KMemManPanicDes, "MemMan:0"  );
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// CLASS DECLARATION
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//  initializing a global memory pool.
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static CMemoryPool *s_pool = 0;
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struct cleanupMemoryPool {
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    ~cleanupMemoryPool() {
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    	if(s_pool)
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    		{
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    		delete s_pool;
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    		s_pool = NULL;
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    		}
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    }
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};
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static cleanupMemoryPool deleteMemoryPool;
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//-----------------------------------------------------------------------------
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// Pool() - a utility function for accessing the right memory pool
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//-----------------------------------------------------------------------------
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inline CMemoryPool* Pool() 
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    {
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    if( !s_pool ) {
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        // applications using fast memory pool already created the pool at 
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        // startup.
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        s_pool = new CDefaultMemoryPool();
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        s_pool->Create();
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    }
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    return s_pool;
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    }
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//-----------------------------------------------------------------------------
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// MemoryManager::CreateAllocator
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//-----------------------------------------------------------------------------
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EXPORT_C void MemoryManager::CreateFastAllocator()
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    {
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    // create the right memory pool
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    MEM_LOGF(_L8("MemoryManager::CreateFastAllocator - s_pool=%x"), s_pool);
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#ifdef __NEW_ALLOCATOR__
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    CMemoryPool *pool = new CNewSymbianHeapPool();
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    pool->Create();
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    RSymbianDlAllocatorWrapper* allocator = new RSymbianDlAllocatorWrapper((CNewSymbianHeapPool*)pool);
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    MEM_LOGF(_L8("MemoryManager::CreateFastAllocator - new pool=%x, allocator=%x"), pool, allocator);
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    User::SwitchAllocator(allocator);
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#endif
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    }
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//-----------------------------------------------------------------------------
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// MemoryManager::InitAllocator
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//-----------------------------------------------------------------------------
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EXPORT_C void MemoryManager::InitFastAllocator()
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    {
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    // Initialize s_pool variable from current allocator, assumption is that main program has already called CreateAllocator()
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    // It is special case when this allocator is created in SetupThreadHeap() where can not initialize static data. It also
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    // solves problems due to static data destruction in Symbian 9.5.
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#ifdef __NEW_ALLOCATOR__    
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    RAllocator &aAllocator = User::Allocator();
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    RSymbianDlAllocatorWrapper* allocator = (RSymbianDlAllocatorWrapper*) &aAllocator;
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    s_pool = allocator->iPool;
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    MEM_LOGF(_L8("MemoryManager::InitFastAllocator - s_pool=%x, allocator=%x"), s_pool, allocator);
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#endif    
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    }
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//-----------------------------------------------------------------------------
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// MemoryManager::SwitchToFastAllocator
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//-----------------------------------------------------------------------------
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EXPORT_C RAllocator* MemoryManager::SwitchToFastAllocator()
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    {
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    // create the right memory pool
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    //__ASSERT_DEBUG( s_pool == 0, User::Panic( KMemManPanicDes, 0 ) );
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    MEM_LOGF(_L8("MemoryManager::SwitchToFastAllocator - s_pool=%x"), s_pool);
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#ifdef __NEW_ALLOCATOR__
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    s_pool = new CNewSymbianHeapPool();
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    s_pool->Create();
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    RSymbianDlAllocatorWrapper* allocator = new RSymbianDlAllocatorWrapper((CNewSymbianHeapPool*)s_pool);
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    MEM_LOGF(_L8("MemoryManager::SwitchToFastAllocator - new s_pool=%x"), s_pool);
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    return User::SwitchAllocator( allocator );
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#else
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    s_pool = new CFastMemoryPool();
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    s_pool->Create();
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    RFastAllocator* allocator = new RFastAllocator((CFastMemoryPool*)s_pool);
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    return User::SwitchAllocator( allocator );
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#endif
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    }
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//-----------------------------------------------------------------------------
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// MemoryManager::CloseFastAllocator
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//-----------------------------------------------------------------------------
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EXPORT_C void MemoryManager::CloseFastAllocator(RAllocator* aDefaultAllocator)
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    {
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#ifdef __NEW_ALLOCATOR__
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    RAllocator* allocator = User::SwitchAllocator( aDefaultAllocator );
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    delete (RSymbianDlAllocatorWrapper*)(allocator);
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#else
0
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    RAllocator* allocator = User::SwitchAllocator( aDefaultAllocator );
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    delete (RFastAllocator*)(allocator);
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#endif
0
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    }
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//-----------------------------------------------------------------------------
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// MemoryManager::AddCollector
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//-----------------------------------------------------------------------------
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EXPORT_C void MemoryManager::AddCollector( MMemoryCollector* aCollector )
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    {
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    MEM_LOGF(_L8("MemoryManager::AddCollector - s_pool=%x"), s_pool);
0
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    Pool()->AddCollector( aCollector );
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    }
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//-----------------------------------------------------------------------------
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// MemoryManager::RemoveCollector
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//-----------------------------------------------------------------------------
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EXPORT_C void MemoryManager::RemoveCollector( MMemoryCollector* aCollector )
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    {
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    Pool()->RemoveCollector( aCollector );
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    }
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//-----------------------------------------------------------------------------
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// MemoryManager::AddStopper
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//-----------------------------------------------------------------------------
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EXPORT_C void MemoryManager::AddStopper( MOOMStopper* aStopper )
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    {
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    MEM_LOGF(_L8("MemoryManager::AddStopper - s_pool=%x"), s_pool);
0
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    Pool()->AddStopper( aStopper );
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    }
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//-----------------------------------------------------------------------------
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// MemoryManager::RemoveStopper
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//-----------------------------------------------------------------------------
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EXPORT_C void MemoryManager::RemoveStopper( MOOMStopper* aStopper )
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    {
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    Pool()->RemoveStopper( aStopper );
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    }
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//-----------------------------------------------------------------------------
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// MemoryManager::SetNotifier
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//-----------------------------------------------------------------------------
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EXPORT_C void MemoryManager::SetNotifier( MOOMNotifier* aNotifier )
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    {
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    Pool()->SetNotifier( aNotifier );
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    }
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//-----------------------------------------------------------------------------
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// MemoryManager::PreCheck
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//-----------------------------------------------------------------------------
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EXPORT_C TBool MemoryManager::PreCheck( TUint aTotalSize, TUint aMaxBufSize, const TDesC8& aChecker )
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    {
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    return Pool()->PreCheck( aTotalSize, aMaxBufSize, aChecker );
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    }
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//-----------------------------------------------------------------------------
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// MemoryManager::PostCheck
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//-----------------------------------------------------------------------------
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EXPORT_C TUint MemoryManager::PostCheck()
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    {
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    return Pool()->PostCheck();
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    }
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//-----------------------------------------------------------------------------
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// MemoryManager::SetStatus
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//-----------------------------------------------------------------------------
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EXPORT_C void MemoryManager::SetStatus( TOOMCheckResult aType )
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    {
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    Pool()->SetStatus( aType );
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    }
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//-----------------------------------------------------------------------------
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// MemoryManager::Status
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//-----------------------------------------------------------------------------
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EXPORT_C TUint MemoryManager::Status()
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    {
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    return Pool()->Status();
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    }
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//-----------------------------------------------------------------------------
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// MemoryManager::FreeRam
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//-----------------------------------------------------------------------------
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EXPORT_C void MemoryManager::FreeRam()
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    {
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    Pool()->CollectMemory();
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    }
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//-----------------------------------------------------------------------------
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// MemoryManager::RestoreCollectors
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//-----------------------------------------------------------------------------
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EXPORT_C void MemoryManager::RestoreCollectors()
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    {
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    Pool()->RestoreCollectors(EOOM_PriorityLow);
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    }
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//-----------------------------------------------------------------------------
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// MemoryManager::SetRescueBufferSize
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//-----------------------------------------------------------------------------
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EXPORT_C void MemoryManager::SetRescueBufferSize( TInt aSize )
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    {
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    Pool()->SetRescueBufferSize( aSize );
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    }
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//-----------------------------------------------------------------------------
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// MemoryManager::MemorySize
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//-----------------------------------------------------------------------------
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EXPORT_C TUint MemoryManager::MemorySize( TAny* aPtr )
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    {
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    return Pool()->MemorySize( aPtr );
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    }
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