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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 "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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#include "MemSpyDriverLogChanHeapDataKernel.h"
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// System includes
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#include <u32hal.h>
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#include <e32rom.h>
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#include <memspy/driver/memspydriverconstants.h>
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#include <memspy/driver/memspydriverobjectsshared.h>
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// Shared includes
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#include "MemSpyDriverOpCodes.h"
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#include "MemSpyDriverObjectsInternal.h"
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// User includes
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#include "MemSpyDriverHeap.h"
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#include "MemSpyDriverUtils.h"
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#include "MemSpyDriverDevice.h"
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#include "MemSpyDriverOSAdaption.h"
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#include "MemSpyDriverHeapWalker.h"
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#include "MemSpyDriverUserEventMonitor.h"
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#include "MemSpyDriverSuspensionManager.h"
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DMemSpyDriverLogChanHeapDataKernel::DMemSpyDriverLogChanHeapDataKernel( DMemSpyDriverDevice& aDevice, DThread& aThread )
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: DMemSpyDriverLogChanHeapDataBase( aDevice, aThread ), iKernelHeap( aDevice.OSAdaption() )
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{
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::DMemSpyDriverLogChanHeapDataKernel() - this: 0x%08x", this ));
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}
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TInt DMemSpyDriverLogChanHeapDataKernel::Request( TInt aFunction, TAny* a1, TAny* a2 )
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{
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TInt r = DMemSpyDriverLogChanHeapBase::Request( aFunction, a1, a2 );
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if ( r == KErrNone )
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{
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if ( aFunction != EMemSpyDriverOpCodeHeapKernelDataFetchCellList )
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{
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ReleaseCellList();
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}
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//
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switch( aFunction )
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{
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case EMemSpyDriverOpCodeHeapKernelDataGetInfo:
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r = GetInfoData( (TMemSpyDriverInternalHeapRequestParameters*) a1 );
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break;
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case EMemSpyDriverOpCodeHeapKernelDataGetIsDebugKernel:
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r = GetIsDebugKernel(a1);
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break;
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case EMemSpyDriverOpCodeHeapKernelDataFetchCellList:
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r = FetchCellList( (TDes8*) a1 );
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break;
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case EMemSpyDriverOpCodeHeapKernelDataCopyHeap:
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r = MakeKernelHeapCopy();
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break;
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case EMemSpyDriverOpCodeHeapKernelDataGetFull:
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r = DMemSpyDriverLogChanHeapDataBase::GetFullData( (TMemSpyDriverInternalHeapDataParams*) a1 );
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break;
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case EMemSpyDriverOpCodeHeapKernelDataFreeHeapCopy:
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FreeKernelHeapCopy();
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break;
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default:
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r = KErrNotSupported;
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break;
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}
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}
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//
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return r;
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}
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TBool DMemSpyDriverLogChanHeapDataKernel::IsHandler( TInt aFunction ) const
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{
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return ( aFunction > EMemSpyDriverOpCodeHeapKernelDataBase && aFunction < EMemSpyDriverOpCodeHeapKernelDataEnd );
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}
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TInt DMemSpyDriverLogChanHeapDataKernel::GetInfoData( TMemSpyDriverInternalHeapRequestParameters* aParams )
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{
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetInfoData() - START" ) );
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TInt r = Kern::ThreadRawRead( &ClientThread(), aParams, &iHeapInfoParams, sizeof(TMemSpyDriverInternalHeapRequestParameters) );
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if ( r != KErrNone )
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{
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetInfoDataUser - params read error: %d", r));
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}
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else
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{
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if (iHeapInfoParams.iUseKernelHeapCopy)
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{
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__ASSERT_ALWAYS( iKernelHeap.IsOpen(), MemSpyDriverUtils::PanicThread( ClientThread(), EPanicHeapKernelCopyExpected ) );
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r = DMemSpyDriverLogChanHeapDataKernel::GetInfoData(iKernelHeap);
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}
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else
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{
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RMemSpyDriverRHeapKernelInPlace rHeap(OSAdaption());
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r = rHeap.OpenKernelHeap();
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if ( r == KErrNone )
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{
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r = DMemSpyDriverLogChanHeapDataKernel::GetInfoData(rHeap);
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}
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else
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{
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetInfoData() - open err: %d", r ) );
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}
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}
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}
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetInfoData() - END - ret: %d", r) );
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return r;
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}
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TInt DMemSpyDriverLogChanHeapDataKernel::GetInfoData(RMemSpyDriverRHeapBase& aHeap)
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{
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NKern::ThreadEnterCS();
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TInt r = KErrNone;
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// This object holds all of the info we will accumulate for the client.
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TMemSpyHeapInfo masterHeapInfo;
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masterHeapInfo.SetType(aHeap.GetTypeFromHelper());
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masterHeapInfo.SetTid( 2 );
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masterHeapInfo.SetPid( 1 );
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// This is the RHeap-specific object that contains all RHeap info
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TMemSpyHeapInfoRHeap& rHeapInfo = masterHeapInfo.AsRHeap();
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// We must walk the heap in order to build statistics
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TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetInfoData - calling heap walker constructor..."));
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RMemSpyDriverHeapWalker heapWalker(aHeap);
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if (iHeapInfoParams.iBuildFreeCellList || iHeapInfoParams.iBuildAllocCellList)
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{
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heapWalker.SetObserver( this );
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetInfoData - collecting cells"));
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}
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else
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{
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetInfoData - not collecting cells"));
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}
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TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetInfoData - starting traversal..." ));
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#if defined( TRACE_TYPE_KERNELHEAP )
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heapWalker.SetPrintDebug();
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#endif
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if (r == KErrNone) r = heapWalker.Traverse();
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TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetInfoData - finished traversal - err: %d", r ));
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TMemSpyHeapStatisticsRHeap& rHeapStats = rHeapInfo.Statistics();
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heapWalker.CopyStatsTo( rHeapStats );
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// Get remaining meta data that isn't stored elsewhere
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TMemSpyHeapMetaDataRHeap& rHeapMetaData = rHeapInfo.MetaData();
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TFullName chunkName;
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aHeap.Chunk().FullName(chunkName);
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rHeapMetaData.SetChunkName(chunkName);
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rHeapMetaData.SetChunkSize( (TUint) aHeap.Chunk().Size() );
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rHeapMetaData.SetChunkHandle( &aHeap.Chunk() );
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rHeapMetaData.SetChunkBaseAddress( OSAdaption().DChunk().GetBase(aHeap.Chunk()) );
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rHeapMetaData.SetDebugAllocator(aHeap.Helper()->AllocatorIsUdeb());
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rHeapMetaData.SetUserThread( EFalse );
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rHeapMetaData.SetSharedHeap( ETrue );
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rHeapMetaData.iHeapSize = aHeap.Helper()->CommittedSize();
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rHeapMetaData.iAllocatorAddress = (TAny*)aHeap.Helper()->AllocatorAddress();
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rHeapMetaData.iMinHeapSize = aHeap.Helper()->MinCommittedSize();
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rHeapMetaData.iMaxHeapSize = aHeap.Helper()->MaxCommittedSize();
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PrintHeapInfo( masterHeapInfo );
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// Write free cells if requested
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if ( r == KErrNone && (iHeapInfoParams.iBuildFreeCellList || iHeapInfoParams.iBuildAllocCellList))
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{
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r = PrepareCellListTransferBuffer();
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}
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if ( r >= KErrNone )
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{
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// Write results back to user-side
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TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetInfoData - writing to user-side..."));
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TMemSpyHeapInfo* kernelMasterInfo = iHeapInfoParams.iMasterInfo;
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const TInt error = Kern::ThreadRawWrite( &ClientThread(), kernelMasterInfo, &masterHeapInfo, sizeof(TMemSpyHeapInfo) );
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if ( error < 0 )
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{
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r = error;
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}
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}
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NKern::ThreadLeaveCS();
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetInfoData() - END - ret: %d", r) );
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return r;
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}
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TInt DMemSpyDriverLogChanHeapDataKernel::GetIsDebugKernel(TAny* aResult)
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{
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetIsDebugKernel() - START") );
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TInt r = KErrNone;
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TBool debugKernel = EFalse;
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NKern::ThreadEnterCS();
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RMemSpyDriverRHeapKernelInPlace rHeap(OSAdaption());
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r = rHeap.OpenKernelHeap();
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetIsDebugKernel() - open kernel heap returned: %d", r) );
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if ( r == KErrNone )
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{
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debugKernel = rHeap.Helper()->AllocatorIsUdeb();
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// Tidy up
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rHeap.Close();
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}
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetIsDebugKernel() - debugKernel: %d", debugKernel) );
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// Write back to user-land
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetIsDebugKernel() - writing to user-side...") );
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r = Kern::ThreadRawWrite( &ClientThread(), aResult, &debugKernel, sizeof(TBool) );
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NKern::ThreadLeaveCS();
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetIsDebugKernel() - END - ret: %d", r) );
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return r;
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}
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TInt DMemSpyDriverLogChanHeapDataKernel::OpenKernelHeap( RMemSpyDriverRHeapKernelFromCopy& aHeap )
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{
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TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::OpenKernelHeap(CP) - START") );
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RAllocatorHelper kernelHeapHelper;
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TInt r = kernelHeapHelper.OpenKernelHeap();
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TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::OpenKernelHeap(CP) - open err: %d", r ) );
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if ( r == KErrNone )
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{
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DChunk* kernelChunk = kernelHeapHelper.OpenUnderlyingChunk();
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if (kernelChunk) {
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// TODO can we lock just the kernel heap here to avoid the problem below?
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// Make a new chunk that we can copy the kernel heap into. We cannot lock the system the entire time
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// we need to do this, therefore there is no guarantee that the chunk will be large enough to hold the
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// (current) heap data at the time we need to make the copy. We oversize the chunk by 1mb in the "hope"
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// that it will be enough... :(
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TChunkCreateInfo info;
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info.iType = TChunkCreateInfo::ESharedKernelSingle;
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info.iMaxSize = kernelChunk->MaxSize() + ( 1024 * 1024 );
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info.iOwnsMemory = ETrue; // Use memory from system's free pool
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info.iDestroyedDfc = NULL;
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#ifdef __EPOC32__
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info.iMapAttr = (TInt)EMapAttrFullyBlocking; // Full caching
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#endif
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// Holds a copy of the client's heap chunk
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DChunk* heapCopyChunk;
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TLinAddr heapCopyChunkAddress;
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TUint32 heapCopyChunkMappingAttributes;
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r = Kern::ChunkCreate( info, heapCopyChunk, heapCopyChunkAddress, heapCopyChunkMappingAttributes );
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TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::OpenKernelHeap(CP) - creating chunk returned: %d", r));
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// Unfortunately we have to commit every page in the copied chunk irrespective of whether that's the case
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// with the kernel chunk due to mutex ordering enforced by the kernel. See the note about this below.
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// This results in waste but with the way the kernel heap currently works it's not too bad.
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// TODO fix this so it's more generic and doesn't rely on details of how the kernel heap works.
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r = Kern::ChunkCommit(heapCopyChunk, 0, info.iMaxSize);
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// Keep track of the pages we need to de-commit from the copy
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// We allocate enough space here so we don't attempt to resise
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TLinAddr* pageAddrsToDeCommit = new TLinAddr[info.iMaxSize / KPageSize];
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TUint pageAddrsToDeCommitIndex = 0;
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TBool cleanupCopyChunk = EFalse;
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if ( r == KErrNone )
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{
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HBuf8* data = HBuf8::New(KPageSize);
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if (data)
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{
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TAny* dataPtr = (TAny*) data->Ptr();
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r = kernelHeapHelper.TryLock();
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TInt actualKernelChunkSize = kernelChunk->Size();
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if ( r == KErrNone )
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{
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// We now attempt to copy the kernel heap page by page
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// This is because the kernel chunk is disconnected and hence can have pages
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// in the middle of the heap that havent' been committed yet.
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// TODO can we make this more efficient?
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TInt err = KErrNone;
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TUint8* kernChunkAddr = kernelChunk->Base();
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TUint8* copyChunkAddr = (TUint8*) heapCopyChunkAddress;
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while(err == KErrNone &&
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kernChunkAddr < kernelChunk->Base() + kernelChunk->MaxSize())
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{
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XTRAP(err, XT_DEFAULT, memcpy(dataPtr, kernChunkAddr, KPageSize));
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if (!err)
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{
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// It'd be nice if we could just commit the pages of the copy chunk to match
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// the commited pages in the kernel heap here but that violates the following
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// mutex ordering:
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// mutex KernHeap order 8 [from kernelHeapHelper.TryLock()] vs
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// mutex MemoryObjectMutex1 order 9 [from Kern::ChunkCommit()]
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memcpy(copyChunkAddr, dataPtr, KPageSize);
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}
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else
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{
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// This page in the kernel heap wasn't committed so we can continue onto the next
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err = KErrNone;
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// but we do need to remember this so ...
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pageAddrsToDeCommit[pageAddrsToDeCommitIndex++] = (TLinAddr) copyChunkAddr;
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}
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kernChunkAddr += KPageSize;
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copyChunkAddr += KPageSize;
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}
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kernelHeapHelper.TryUnlock();
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TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::OpenKernelHeap(CP) - copied kernel heap data" ));
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// Now remove the bits we didn't actually need to commit
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for(TUint i=0; i < pageAddrsToDeCommitIndex; i++)
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{
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r = heapCopyChunk->Decommit(pageAddrsToDeCommit[i], KPageSize);
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if (r != KErrNone)
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{
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break;
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}
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}
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if (r != KErrNone)
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{
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TInt oversizedEndLength = heapCopyChunk->Size() - actualKernelChunkSize;
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r = heapCopyChunk->Decommit(actualKernelChunkSize, oversizedEndLength);
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}
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if (r == KErrNone)
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{
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// Transfer ownership of the copy heap chunk to the heap object.
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TInt offset = (TInt) heapCopyChunkAddress - (TInt) kernelChunk->Base();
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TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::OpenKernelHeap(CP) - heapCopyChunkAddress: 0x%08x, kernel chunk base: 0x%08x",
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heapCopyChunkAddress, kernelChunk->Base()));
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r = aHeap.AssociateWithKernelChunk( kernelChunk, heapCopyChunk, heapCopyChunkAddress, offset );
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}
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else
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{
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TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::OpenKernelHeap(CP) - failed to decommit all the unnecessary pages from the copy chunk - %d", r ));
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cleanupCopyChunk = ETrue;
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}
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}
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else
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{
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TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::OpenKernelHeap(CP) - failed to lock the kernel heap" ));
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cleanupCopyChunk = ETrue;
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}
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delete data;
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}
|
|
368 |
else
|
|
369 |
{
|
|
370 |
TRACE_KH( Kern::Printf("Failed to allocate a 4K buffer" ) );
|
|
371 |
r = KErrNoMemory;
|
|
372 |
cleanupCopyChunk = ETrue;
|
|
373 |
}
|
|
374 |
}
|
|
375 |
else
|
|
376 |
{
|
|
377 |
TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::OpenKernelHeap(CP) - copy chunk create error: %d", r ) );
|
|
378 |
cleanupCopyChunk = ETrue;
|
|
379 |
}
|
|
380 |
|
|
381 |
if (cleanupCopyChunk)
|
|
382 |
{
|
|
383 |
NKern::ThreadEnterCS();
|
|
384 |
Kern::ChunkClose( heapCopyChunk );
|
|
385 |
heapCopyChunk = NULL;
|
|
386 |
NKern::ThreadLeaveCS();
|
|
387 |
}
|
|
388 |
|
|
389 |
delete[] pageAddrsToDeCommit;
|
|
390 |
pageAddrsToDeCommit = NULL;
|
|
391 |
}
|
|
392 |
else
|
|
393 |
{
|
|
394 |
TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::OpenKernelHeap(CP) - failed to open the kernel chunk" ) );
|
|
395 |
}
|
|
396 |
}
|
|
397 |
else
|
|
398 |
{
|
|
399 |
TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::OpenKernelHeap(CP) - failed to open the kernel heap: %d", r ) );
|
|
400 |
}
|
|
401 |
|
|
402 |
kernelHeapHelper.Close();
|
|
403 |
|
|
404 |
if ( r != KErrNone )
|
|
405 |
{
|
|
406 |
aHeap.Close(); // also deals with the chunk
|
|
407 |
}
|
|
408 |
|
|
409 |
|
|
410 |
TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::OpenKernelHeap(CP) - END - ret: %d", r ) );
|
|
411 |
return r;
|
|
412 |
}
|
|
413 |
|
|
414 |
TInt DMemSpyDriverLogChanHeapDataKernel::MakeKernelHeapCopy()
|
|
415 |
{
|
|
416 |
// First phase is to
|
|
417 |
// a) Open kernel heap
|
|
418 |
// b) Make a copy of the heap data
|
|
419 |
//
|
|
420 |
// The driver leaves kernel context with the copy of the kernel heap still associated with MemSpy's process.
|
|
421 |
// The second driver call will copy the chunk data to user side and release the kernel side chunk.
|
|
422 |
|
|
423 |
iKernelHeap.Reset();
|
|
424 |
NKern::ThreadEnterCS();
|
|
425 |
|
|
426 |
TInt r = OpenKernelHeap( iKernelHeap );
|
|
427 |
TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetFullDataInit() - open err: %d", r));
|
|
428 |
|
|
429 |
NKern::ThreadLeaveCS();
|
|
430 |
|
|
431 |
TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetFullDataInit() - END - ret: %d", r));
|
|
432 |
return r;
|
|
433 |
}
|
|
434 |
|
|
435 |
void DMemSpyDriverLogChanHeapDataKernel::FreeKernelHeapCopy()
|
|
436 |
{
|
|
437 |
iKernelHeap.Close();
|
|
438 |
}
|
|
439 |
|
|
440 |
TInt DMemSpyDriverLogChanHeapDataKernel::GetFullData( TMemSpyDriverInternalHeapDataParams& aParams )
|
|
441 |
{
|
|
442 |
TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetFullData() - START") );
|
|
443 |
|
|
444 |
TInt r = OpenTempObject( aParams.iTid, EThread );
|
|
445 |
if ( r != KErrNone )
|
|
446 |
{
|
|
447 |
Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetFullData() - END - thread not found");
|
|
448 |
return r;
|
|
449 |
}
|
|
450 |
// Don't need to check if the kernel heap contains DRM data unlike for user heaps
|
|
451 |
|
|
452 |
DThread* thread = (DThread*) TempObject();
|
|
453 |
TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetFullData - thread: %O", thread) );
|
|
454 |
|
|
455 |
r = DoGetFullData(aParams, thread, iKernelHeap);
|
|
456 |
|
|
457 |
CloseTempObject();
|
|
458 |
|
|
459 |
TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetFullData() - END - ret: %d", r) );
|
|
460 |
return r;
|
|
461 |
}
|