/*

* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  

*

*

*/

// INCLUDE FILES

#include "MemoryManager.h"

#include "MemoryPool.h"

#include "FastAllocator.h"

// CONSTANTS

_LIT( KMemManPanicDes, "MemMan:0"  );

// CLASS DECLARATION

//  initializing a global memory pool.

static CMemoryPool *s_pool = 0;

struct cleanupMemoryPool {

    ~cleanupMemoryPool() {

    	if(s_pool)

    		{

    		delete s_pool;

    		s_pool = NULL;

    		}

    }

};

static cleanupMemoryPool deleteMemoryPool;

//-----------------------------------------------------------------------------

// Pool() - a utility function for accessing the right memory pool

//-----------------------------------------------------------------------------

inline CMemoryPool* Pool() 

    {

    if( !s_pool ) {

        // applications using fast memory pool already created the pool at 

        // startup.

        s_pool = new CDefaultMemoryPool();

        s_pool->Create();

    }

    return s_pool;

    }

//-----------------------------------------------------------------------------

// MemoryManager::SwitchToFastAllocator

//-----------------------------------------------------------------------------

EXPORT_C RAllocator* MemoryManager::SwitchToFastAllocator()

    {

    // create the right memory pool

    __ASSERT_DEBUG( s_pool == 0, User::Panic( KMemManPanicDes, 0 ) );

#ifdef __NEW_ALLOCATOR__

    s_pool = new CNewSymbianHeapPool();

    s_pool->Create();

    RSymbianDlAllocatorWrapper* allocator = new RSymbianDlAllocatorWrapper((CNewSymbianHeapPool*)s_pool);

    return User::SwitchAllocator( allocator );

#else

    s_pool = new CFastMemoryPool();

    s_pool->Create();

    RFastAllocator* allocator = new RFastAllocator((CFastMemoryPool*)s_pool);

    return User::SwitchAllocator( allocator );

#endif

    }

//-----------------------------------------------------------------------------

// MemoryManager::CloseFastAllocator

//-----------------------------------------------------------------------------

EXPORT_C void MemoryManager::CloseFastAllocator(RAllocator* aDefaultAllocator)

    {

#ifdef __NEW_ALLOCATOR__

    RAllocator* allocator = User::SwitchAllocator( aDefaultAllocator );

    delete (RSymbianDlAllocatorWrapper*)(allocator);

#else

    RAllocator* allocator = User::SwitchAllocator( aDefaultAllocator );

    delete (RFastAllocator*)(allocator);

#endif

    }

//-----------------------------------------------------------------------------

// MemoryManager::AddCollector

//-----------------------------------------------------------------------------

EXPORT_C void MemoryManager::AddCollector( MMemoryCollector* aCollector )

    {

    Pool()->AddCollector( aCollector );

    }

//-----------------------------------------------------------------------------

// MemoryManager::RemoveCollector

//-----------------------------------------------------------------------------

EXPORT_C void MemoryManager::RemoveCollector( MMemoryCollector* aCollector )

    {

    Pool()->RemoveCollector( aCollector );

    }

//-----------------------------------------------------------------------------

// MemoryManager::AddStopper

//-----------------------------------------------------------------------------

EXPORT_C void MemoryManager::AddStopper( MOOMStopper* aStopper )

    {

    Pool()->AddStopper( aStopper );

    }

//-----------------------------------------------------------------------------

// MemoryManager::RemoveStopper

//-----------------------------------------------------------------------------

EXPORT_C void MemoryManager::RemoveStopper( MOOMStopper* aStopper )

    {

    Pool()->RemoveStopper( aStopper );

    }

//-----------------------------------------------------------------------------

// MemoryManager::SetNotifier

//-----------------------------------------------------------------------------

EXPORT_C void MemoryManager::SetNotifier( MOOMNotifier* aNotifier )

    {

    Pool()->SetNotifier( aNotifier );

    }

//-----------------------------------------------------------------------------

// MemoryManager::PreCheck

//-----------------------------------------------------------------------------

EXPORT_C TBool MemoryManager::PreCheck( TUint aTotalSize, TUint aMaxBufSize, const TDesC8& aChecker )

    {

    return Pool()->PreCheck( aTotalSize, aMaxBufSize, aChecker );

    }

//-----------------------------------------------------------------------------

// MemoryManager::PostCheck

//-----------------------------------------------------------------------------

EXPORT_C TUint MemoryManager::PostCheck()

    {

    return Pool()->PostCheck();

    }

//-----------------------------------------------------------------------------

// MemoryManager::SetStatus

//-----------------------------------------------------------------------------

EXPORT_C void MemoryManager::SetStatus( TOOMCheckResult aType )

    {

    Pool()->SetStatus( aType );

    }

//-----------------------------------------------------------------------------

// MemoryManager::Status

//-----------------------------------------------------------------------------

EXPORT_C TUint MemoryManager::Status()

    {

    return Pool()->Status();

    }

//-----------------------------------------------------------------------------

// MemoryManager::FreeRam

//-----------------------------------------------------------------------------

EXPORT_C void MemoryManager::FreeRam()

    {

    Pool()->CollectMemory();

    }

//-----------------------------------------------------------------------------

// MemoryManager::RestoreCollectors

//-----------------------------------------------------------------------------

EXPORT_C void MemoryManager::RestoreCollectors()

    {

    Pool()->RestoreCollectors(EOOM_PriorityLow);

    }

//-----------------------------------------------------------------------------

// MemoryManager::SetRescueBufferSize

//-----------------------------------------------------------------------------

EXPORT_C void MemoryManager::SetRescueBufferSize( TInt aSize )

    {

    Pool()->SetRescueBufferSize( aSize );

    }

//-----------------------------------------------------------------------------

// MemoryManager::MemorySize

//-----------------------------------------------------------------------------

EXPORT_C TUint MemoryManager::MemorySize( TAny* aPtr )

    {

    return Pool()->MemorySize( aPtr );

    }