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/*
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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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*
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*/
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#ifndef __MEMAPI_H__
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#define __MEMAPI_H__
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// Headers
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#include <e32def.h> // For TInt
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#include <e32cmn.h> // For TDes8
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/*
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* Part of ISCEs internal MEM API.
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* Static interface for for usage of Memory management services.
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* Class spesific faults can be found from source file.
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*/
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class MemApi
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{
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public:
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/*
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* Allocates a block of minimum of size aSize.
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* Descriptor length shall be set to zero, but maximum length may be bigger than size given as parameter.
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* Memory content of the descriptor shall be filled with zeros until maximum length.
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* Memory allocated for the block shall be physically contigous, non-cached and word aligned.
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* If aSize is zero class spesific fault thrown.
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* If not possible to allocate a block class spesific fault thrown.
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* If not called in kernel thread context class spesific fault thrown.
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* If called with FM held or kernel unlocked asserts thrown according to OS macros.
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* @pre Called always in kernel thread context
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* @pre No fastmutex held
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* @pre Kernel unlocked
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* @post Calling thread not blocked
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*/
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IMPORT_C static TDes8& AllocBlock( const TUint16 aSize );
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/*
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* Deallocates a block given as parameter.
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* If block was already deallocated class spesific fault thrown.
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* If block was not from the memory management pool class spesific fault thrown.
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* If not called in kernel thread context class spesific fault thrown.
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* If called with FM held or kernel unlocked asserts thrown according to OS macros.
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* @pre Called always in kernel thread context
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* @pre No fastmutex held
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* @pre Kernel unlocked
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* @post Calling thread not blocked
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*/
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IMPORT_C static void DeallocBlock( TDes8& aBlock );
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};
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#endif // __MEMAPI_H__
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