1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/kernelhwsrv/kernel/eka/drivers/debug/smdebug/d_buffer_manager.cpp	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,105 @@
     1.4 +// Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
     1.5 +// All rights reserved.
     1.6 +// This component and the accompanying materials are made available
     1.7 +// under the terms of the License "Eclipse Public License v1.0"
     1.8 +// which accompanies this distribution, and is available
     1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
    1.10 +//
    1.11 +// Initial Contributors:
    1.12 +// Nokia Corporation - initial contribution.
    1.13 +//
    1.14 +// Contributors:
    1.15 +//
    1.16 +// Description:
    1.17 +// 
    1.18 +
    1.19 +#include <kernel/kernel.h>
    1.20 +#include "d_buffer_manager.h"
    1.21 +
    1.22 +using namespace Debug;
    1.23 +
    1.24 +// Global buffer manager
    1.25 +DBufferManager TheDBufferManager;
    1.26 +
    1.27 +DBufferManager::DBufferManager()
    1.28 +	{
    1.29 +	}
    1.30 +
    1.31 +DBufferManager::~DBufferManager()
    1.32 +	{
    1.33 +	for(TInt i=0; i<iBuffers.Count(); i++)
    1.34 +		{
    1.35 +		if(iBuffers[i].iSize>0 && iBuffers[i].iValue)
    1.36 +			{
    1.37 +			Kern::Free((TAny*)iBuffers[i].iValue);
    1.38 +			}
    1.39 +		}
    1.40 +	
    1.41 +	iBuffers.Close();
    1.42 +	}
    1.43 +
    1.44 +/**
    1.45 + * Creates a buffer and adds it to the buffer manager
    1.46 + * @param aBufferDetails Contains the size and tag ID of the buffer to be created and the location
    1.47 + *						in which the resulting buffer is created
    1.48 + * @return One of the System wide error codes
    1.49 + */
    1.50 +TInt DBufferManager::CreateBuffer(TTag& aBufferDetails)
    1.51 +	{
    1.52 +	if(aBufferDetails.iType != ETagTypePointer)
    1.53 +		{
    1.54 +		return KErrArgument;
    1.55 +		}
    1.56 +	if(aBufferDetails.iSize == 0)
    1.57 +		{
    1.58 +		return KErrArgument;
    1.59 +		}
    1.60 +
    1.61 +	for(TInt i=0; i<iBuffers.Count(); i++)
    1.62 +		{
    1.63 +		if(iBuffers[i].iTagId == aBufferDetails.iTagId)
    1.64 +			{
    1.65 +			return KErrAlreadyExists;
    1.66 +			}
    1.67 +		}
    1.68 +	
    1.69 +	TAny* buffer = Kern::AllocZ(aBufferDetails.iSize);
    1.70 +	if(!buffer)
    1.71 +		{
    1.72 +		return KErrNoMemory;
    1.73 +		}
    1.74 +	
    1.75 +	aBufferDetails.iValue = (TUint32)buffer;
    1.76 +	if(KErrNone != iBuffers.Append(aBufferDetails))
    1.77 +		{
    1.78 +		Kern::Free(buffer);
    1.79 +		return KErrNoMemory;
    1.80 +		}
    1.81 +	
    1.82 +	return KErrNone;
    1.83 +	}
    1.84 +
    1.85 +/**
    1.86 + * Retrieves buffer details for a given tag
    1.87 + * @param aTag The tag for which to get buffer details
    1.88 + * @return One of the System wide error codes
    1.89 + */
    1.90 +TInt DBufferManager::GetBufferDetails(const TBufferType aBufferType, TTag& aTag) const
    1.91 +	{
    1.92 +	for(TInt i=0; i<iBuffers.Count(); i++)
    1.93 +		{
    1.94 +		if(iBuffers[i].iTagId == aBufferType)
    1.95 +			{
    1.96 +			aTag = iBuffers[i];
    1.97 +			return KErrNone;
    1.98 +			}
    1.99 +		}
   1.100 +	
   1.101 +	aTag.iTagId = aBufferType;
   1.102 +	aTag.iType = ETagTypePointer;
   1.103 +	aTag.iSize = 0;
   1.104 +	aTag.iValue = NULL;
   1.105 +
   1.106 +	return KErrNotFound;
   1.107 +	}
   1.108 +