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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 "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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#include "LogDynBuf.h"
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/**
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Constructs RLogDynBuf object with the specified granularity.
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@param aGranularity RLogDynBuf granularity.
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@endcode
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@leave KErrNoMemory Out of memory.
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*/
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void RLogDynBuf::CreateLC(TInt aGranularity)
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{
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iGranularity = aGranularity;
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iBuf.CreateL(aGranularity);
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CleanupClosePushL(*this);
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}
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/**
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Destroys the buffer
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*/
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void RLogDynBuf::Close()
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{
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iBuf.Close();
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}
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/**
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Attempts to append aStr to the end of the buffer. If the buffer has not enough available space,
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AppendL() will try to expand the buffer before the append operation.
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@param aStr 16-bit desrpiptor to be appended to the end of the buffer.
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@leave KErrNoMemory Out of memory.
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*/
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void RLogDynBuf::AppendL(const TDesC& aStr)
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{
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DoAllocL(aStr.Length());
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iBuf.Append(aStr);
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}
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/**
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If aLen is bigger than the available buffer space, the buffer will be expanded.
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@param aLen The new size of the buffer, in bytes.
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@leave KErrNoMemory Out of memory.
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*/
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void RLogDynBuf::DoAllocL(TInt aLen)
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{
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__ASSERT_DEBUG(aLen >= 0, User::Invariant());
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const TInt len = iBuf.Length();
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TInt maxLen = iBuf.MaxLength();
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TInt available = maxLen - len;
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TInt overflow = aLen - available;
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if(overflow > 0)
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{
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iBuf.ReAllocL(maxLen + (overflow / iGranularity + 1) * iGranularity);
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}
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}
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