userlibandfileserver/fileserver/shostmassstorage/msproxy/tmsmemmap.inl
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 14 May 2010 17:13:29 +0300
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// Copyright (c) 2008-2010 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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 @file
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 @internalTechnology
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*/
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inline void TMsDataMemMap::Reset()
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    {
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    iDataOffset = static_cast<TInt64>(0);
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    iSize = static_cast<TUint64>(0);
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    }
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inline TUint32 TMsDataMemMap::BlockLength() const
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    {
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    return iSectorSize;
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    }
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inline TUint64 TMsDataMemMap::DataSize() const
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    {
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    return iSize - iDataOffset;
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    }
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inline void TMsDataMemMap::InitDataArea(TUint32 aFirstDataSector, TUint32 aNumSectors, TUint32 aSectorSize)
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	{
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	iSectorSize = aSectorSize;
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	iFormatSectorShift = 0;
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	while(aSectorSize)
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		{
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		++iFormatSectorShift;
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		aSectorSize >>= 1;
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		}
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	iDataOffset = static_cast<TInt64>(aFirstDataSector) * iSectorSize;
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	iSize = static_cast<TInt64>(aNumSectors) * iSectorSize;
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	}
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inline void TMsDataMemMap::InitDataArea(TUint64 aSize)
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    {
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    iSize = aSize - iDataOffset;
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    }
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inline TInt64 TMsDataMemMap::GetDataPos(TInt64 aPos) const
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    {
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    return aPos + iDataOffset;
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    }
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inline TInt TMsDataMemMap::FormatSectorShift() const
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	{
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	return iFormatSectorShift;
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	}
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