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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 "MemSpyDriverLogChanHeapWalkUser.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 "MemSpyDriverSuspensionManager.h"
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DMemSpyDriverLogChanHeapWalkUser::DMemSpyDriverLogChanHeapWalkUser( DMemSpyDriverDevice& aDevice, DThread& aThread )
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: DMemSpyDriverLogChanHeapBase( aDevice, aThread ), iWalkHeap( aDevice.OSAdaption() )
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{
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::DMemSpyDriverLogChanHeapWalk() - this: 0x%08x", this ));
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}
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DMemSpyDriverLogChanHeapWalkUser::~DMemSpyDriverLogChanHeapWalkUser()
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{
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::~DMemSpyDriverLogChanHeapWalk() - START - this: 0x%08x", this ));
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NKern::ThreadEnterCS();
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WalkHeapClose();
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NKern::ThreadLeaveCS();
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::~DMemSpyDriverLogChanHeapWalk() - END - this: 0x%08x", this ));
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}
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TInt DMemSpyDriverLogChanHeapWalkUser::Request( TInt aFunction, TAny* a1, TAny* a2 )
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{
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TInt r = DMemSpyDriverLogChanBase::Request( aFunction, a1, a2 );
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if ( r == KErrNone )
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{
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switch( aFunction )
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{
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case EMemSpyDriverOpCodeHeapUserWalkInit:
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r = WalkHeapInit( (TMemSpyDriverInternalWalkHeapParamsInit*) a1 );
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break;
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case EMemSpyDriverOpCodeHeapUserWalkGetCellInfo:
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r = WalkHeapGetCellInfo( (TAny*) a1, (TMemSpyDriverInternalWalkHeapParamsCell*) a2 );
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break;
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case EMemSpyDriverOpCodeHeapUserWalkReadCellData:
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r = WalkHeapReadCellData( (TMemSpyDriverInternalWalkHeapCellDataReadParams*) a1 );
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break;
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case EMemSpyDriverOpCodeHeapUserWalkNextCell:
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r = WalkHeapNextCell( (TUint) a1, (TMemSpyDriverInternalWalkHeapParamsCell*) a2 );
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break;
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case EMemSpyDriverOpCodeHeapUserWalkClose:
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r = WalkHeapClose();
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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 DMemSpyDriverLogChanHeapWalkUser::IsHandler( TInt aFunction ) const
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{
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return ( aFunction > EMemSpyDriverOpCodeHeapUserWalkBase && aFunction < EMemSpyDriverOpCodeHeapUserWalkEnd );
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}
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TInt DMemSpyDriverLogChanHeapWalkUser::WalkHeapInit( TMemSpyDriverInternalWalkHeapParamsInit* aParams )
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{
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapInit() - START"));
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__ASSERT_ALWAYS( !iHeapWalkInitialised && iWalkHeap.Helper() == NULL, MemSpyDriverUtils::PanicThread( ClientThread(), EPanicHeapWalkPending ) );
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TInt r = Kern::ThreadRawRead( &ClientThread(), aParams, &iHeapWalkInitialParameters, sizeof(TMemSpyDriverInternalWalkHeapParamsInit) );
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if ( r == KErrNone )
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{
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapInit - thread id: %d, vtable: 0x%08x, debugAllocator: %d", iHeapWalkInitialParameters.iTid, iHeapWalkInitialParameters.iRHeapVTable, iHeapWalkInitialParameters.iDebugAllocator));
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r = OpenTempObject( iHeapWalkInitialParameters.iTid, EThread );
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if ( r == KErrNone )
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{
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// Find the chunk with the correct handle
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DThread* thread = (DThread*) TempObject();
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if ( SuspensionManager().IsSuspended( *thread ) )
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{
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapInit - thread: %O", thread));
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// Open client's heap
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r = iWalkHeap.OpenUserHeap(*thread, iHeapWalkInitialParameters.iDebugAllocator);
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapInit - opening client heap returned: %d", r) );
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if ( r == KErrNone )
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{
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// Indicates that we've initiated a walk - so we can tell whether to close
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// the chunk later on.
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iHeapWalkInitialised = ETrue;
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iWalkHeapCellIndex = 0;
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// Walk the client's heap
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapInit - calling heap walker constructor..."));
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RMemSpyDriverHeapWalker heapWalker(iWalkHeap);
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TMemSpyDriverLogChanHeapWalkObserver observer( *this );
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heapWalker.SetObserver( &observer );
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapInit - starting traversal..."));
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r = heapWalker.Traverse();
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapInit - finished traversal - err: %d", r));
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}
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// If the initialise process didn't complete successfully, then we must be sure
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// to release the associated heap chunk
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if ( r < KErrNone )
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{
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapInit - error scenario - releasing kernel heap chunk copy" ));
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iWalkHeap.Close();
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}
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}
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else
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{
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapInit - parent process not suspended => KErrAccessDenied"));
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r = KErrAccessDenied;
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}
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CloseTempObject();
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}
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else
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{
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapInit - thread not found"));
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}
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}
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else
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{
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapInit - params read error: %d", r));
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}
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapInit() - END - ret: %d", r));
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return r;
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}
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TInt DMemSpyDriverLogChanHeapWalkUser::WalkHeapNextCell( TUint aTid, TMemSpyDriverInternalWalkHeapParamsCell* aParams )
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{
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const TInt walkedHeapCellCount = iWalkHeapCells.Count();
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapNextCell() - START - current cell count: %d", walkedHeapCellCount));
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__ASSERT_ALWAYS( iHeapWalkInitialised && iWalkHeap.Helper(), MemSpyDriverUtils::PanicThread( ClientThread(), EPanicHeapWalkNotInitialised ) );
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// Open the original thread
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TInt r = OpenTempObject( aTid, EThread );
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if ( r == KErrNone )
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{
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// Get the thread handle and that we have suspended the process' threads
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DThread* thread = (DThread*) TempObject();
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if ( SuspensionManager().IsSuspended( *thread ) )
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{
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NKern::ThreadEnterCS();
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if ( walkedHeapCellCount > 0 && iWalkHeapCellIndex >= 0 && iWalkHeapCellIndex < walkedHeapCellCount )
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{
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// Write back head cell to user-space
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TMemSpyDriverInternalWalkHeapParamsCell cell( iWalkHeapCells[ iWalkHeapCellIndex++ ] );
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapNextCell - returning... cellType: %1d, addr: 0x%08x, len: %8d, nestingLev: %8d, allocNum: %8d", cell.iCellType, cell.iCellAddress, cell.iLength, cell.iNestingLevel, cell.iAllocNumber ));
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r = Kern::ThreadRawWrite( &ClientThread(), aParams, &cell, sizeof(TMemSpyDriverInternalWalkHeapParamsCell) );
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if ( r != KErrNone )
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{
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapNextCell - params read error: %d", r));
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}
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}
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else
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{
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r = KErrEof;
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}
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NKern::ThreadLeaveCS();
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}
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else
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{
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapNextCell - parent process not suspended => KErrAccessDenied"));
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r = KErrAccessDenied;
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}
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CloseTempObject();
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}
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else
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{
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Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapNextCell - thread not found");
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}
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//
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapNextCell() - END - ret: %d", r));
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return r;
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}
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TInt DMemSpyDriverLogChanHeapWalkUser::WalkHeapClose()
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{
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapClose() - START"));
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//
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if ( iHeapWalkInitialised )
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{
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapClose - heap walk was still open..."));
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NKern::ThreadEnterCS();
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iWalkHeap.Close();
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// Discard handled cells
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iWalkHeapCells.Reset();
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iHeapWalkInitialised = EFalse;
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NKern::ThreadLeaveCS();
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}
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//
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapClose() - END"));
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return KErrNone;
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}
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TInt DMemSpyDriverLogChanHeapWalkUser::WalkHeapReadCellData(TMemSpyDriverInternalWalkHeapCellDataReadParams* aParams)
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{
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__ASSERT_ALWAYS( iHeapWalkInitialised && iWalkHeap.Helper(), MemSpyDriverUtils::PanicThread( ClientThread(), EPanicHeapWalkNotInitialised ) );
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//
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData() - START - thread id: %d, vtable: 0x%08x", iHeapWalkInitialParameters.iTid, iHeapWalkInitialParameters.iRHeapVTable));
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//
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TMemSpyDriverInternalWalkHeapCellDataReadParams params;
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TInt r = Kern::ThreadRawRead( &ClientThread(), aParams, ¶ms, sizeof(TMemSpyDriverInternalWalkHeapCellDataReadParams) );
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if ( r != KErrNone )
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{
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData() - END - params read error: %d", r));
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return r;
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}
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData - cell: 0x%08x, readLen: %8d, writeAddr: 0x%08x", params.iCellAddress, params.iReadLen, params.iDes));
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// Open the original thread
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r = OpenTempObject( iHeapWalkInitialParameters.iTid, EThread );
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if ( r == KErrNone )
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{
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// Get the thread handle
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DThread* thread = (DThread*) TempObject();
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// Check the threads in the process are suspended
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if ( SuspensionManager().IsSuspended( *thread ) )
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{
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// Check we can find the cell in the cell list...
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const TMemSpyDriverInternalWalkHeapParamsCell* cell = CellInfoForSpecificAddress( params.iCellAddress );
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData - cell: 0x%08x for address: 0x%08x", cell, params.iCellAddress ));
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if ( cell )
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{
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const TInt cellLen = cell->iLength;
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData - cellLen: %d", cellLen ));
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if ( params.iReadLen <= cellLen )
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{
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// Get user side descriptor length info
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TInt destLen = 0;
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TInt destMax = 0;
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TUint8* destPtr = NULL;
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r = Kern::ThreadGetDesInfo( &ClientThread(), params.iDes, destLen, destMax, destPtr, ETrue );
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData - user side descriptor: 0x%08x (0x%08x), len: %8d, maxLen: %8d, r: %d", params.iDes, destPtr, destLen, destMax, r ));
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// Work out the start offset for the data...
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if ( r == KErrNone && destMax >= params.iReadLen )
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{
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const TAny* srcPos = ((TUint8*) cell->iCellAddress);
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData - srcPos: 0x%08x", srcPos ));
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// Read some data
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r = Kern::ThreadRawRead( thread, srcPos, destPtr, params.iReadLen );
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData - read from thread returned: %d", r));
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if ( r == KErrNone )
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{
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// Client will update descriptor length in this situation.
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r = params.iReadLen;
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}
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}
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else
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{
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if ( r != KErrBadDescriptor )
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{
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r = KErrArgument;
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Kern::Printf( "DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData - error - user-descriptor isnt big enough for requested data" );
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}
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else
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{
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Kern::Printf( "DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData - error - bad or non-writable user-side descriptor" );
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}
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}
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}
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else
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{
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r = KErrArgument;
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Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData - error - read length is bigger than cell length");
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}
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}
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else
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{
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r = KErrArgument;
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Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData - no cell at user supplied address!");
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}
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}
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else
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{
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData - parent process not suspended => KErrAccessDenied"));
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r = KErrAccessDenied;
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}
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CloseTempObject();
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}
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else
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{
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Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData - thread not found");
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}
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//
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData() - END result=%d", r));
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return r;
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}
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TInt DMemSpyDriverLogChanHeapWalkUser::WalkHeapGetCellInfo( TAny* aCellAddress, TMemSpyDriverInternalWalkHeapParamsCell* aParams )
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{
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__ASSERT_ALWAYS( iHeapWalkInitialised && iWalkHeap.Helper(), MemSpyDriverUtils::PanicThread( ClientThread(), EPanicHeapWalkNotInitialised ) );
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//
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapGetCellInfo() - START - thread id: %d, vtable: 0x%08x", iHeapWalkInitialParameters.iTid, iHeapWalkInitialParameters.iRHeapVTable));
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapGetCellInfo - cell: 0x%08x", aCellAddress));
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// Open the original thread
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TInt r = OpenTempObject( iHeapWalkInitialParameters.iTid, EThread );
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if (r != KErrNone)
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{
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Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapGetCellInfo() - END - thread not found");
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return r;
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}
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// Get the thread handle
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DThread* thread = (DThread*) TempObject();
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// Check the threads in the process are suspended
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if ( !SuspensionManager().IsSuspended( *thread ) )
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{
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapGetCellInfo - END - parent process not suspended => KErrAccessDenied"));
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CloseTempObject();
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return KErrAccessDenied;
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}
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// Check we can find the cell in the cell list...
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const TMemSpyDriverInternalWalkHeapParamsCell* cell = CellInfoForSpecificAddress( aCellAddress );
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if ( cell == NULL )
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{
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapGetCellInfo - no exact match for address: 0x%08x...", aCellAddress));
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412 |
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// If the cell still wasn't found, then let's look for any heap cell that contains
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// the client-specified address (i.e. find the heap cell that contains the specified
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415 |
// address).
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if ( cell == NULL )
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{
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TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapGetCellInfo - still couldnt find cell by exact address. Searching for the cell that contains the specified address..."));
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419 |
cell = CellInfoForAddressWithinCellRange( aCellAddress );
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}
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421 |
}
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422 |
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423 |
if ( cell )
|
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424 |
{
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425 |
// Have enough info to write back to client now
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426 |
TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapGetCellInfo - returning... cellType: %1d, addr: 0x%08x, len: %8d, nestingLev: %8d, allocNum: %8d", cell->iCellType, cell->iCellAddress, cell->iLength, cell->iNestingLevel, cell->iAllocNumber ));
|
|
427 |
r = Kern::ThreadRawWrite( &ClientThread(), aParams, cell, sizeof(TMemSpyDriverInternalWalkHeapParamsCell) );
|
|
428 |
}
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|
429 |
else
|
|
430 |
{
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|
431 |
r = KErrArgument;
|
|
432 |
Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapGetCellInfo - no cell at user supplied address!");
|
|
433 |
}
|
|
434 |
|
|
435 |
CloseTempObject();
|
|
436 |
//
|
|
437 |
TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapGetCellInfo() - END result=%d", r));
|
|
438 |
return r;
|
|
439 |
}
|
|
440 |
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|
441 |
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442 |
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|
443 |
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444 |
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445 |
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446 |
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447 |
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449 |
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450 |
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451 |
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452 |
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453 |
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454 |
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455 |
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456 |
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457 |
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458 |
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|
459 |
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|
460 |
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|
461 |
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462 |
|
|
463 |
|
|
464 |
|
|
465 |
|
|
466 |
|
|
467 |
const TMemSpyDriverInternalWalkHeapParamsCell* DMemSpyDriverLogChanHeapWalkUser::CellInfoForAddressWithinCellRange( TAny* aAddress ) const
|
|
468 |
{
|
|
469 |
const TMemSpyDriverInternalWalkHeapParamsCell* ret = NULL;
|
|
470 |
//
|
|
471 |
const TInt count = iWalkHeapCells.Count();
|
|
472 |
for(TInt i=0; i<count; i++)
|
|
473 |
{
|
|
474 |
const TMemSpyDriverInternalWalkHeapParamsCell& item = iWalkHeapCells[i];
|
|
475 |
const TAny* cellExtent = (TAny*) (TUint32( item.iCellAddress ) + item.iLength);
|
|
476 |
//
|
|
477 |
if ( aAddress >= item.iCellAddress && aAddress < cellExtent )
|
|
478 |
{
|
|
479 |
ret = &item;
|
|
480 |
}
|
|
481 |
}
|
|
482 |
//
|
|
483 |
return ret;
|
|
484 |
}
|
|
485 |
|
|
486 |
|
|
487 |
const TMemSpyDriverInternalWalkHeapParamsCell* DMemSpyDriverLogChanHeapWalkUser::CellInfoForSpecificAddress( TAny* aAddress ) const
|
|
488 |
{
|
|
489 |
const TMemSpyDriverInternalWalkHeapParamsCell* ret = NULL;
|
|
490 |
//
|
|
491 |
const TInt count = iWalkHeapCells.Count();
|
|
492 |
for(TInt i=0; i<count; i++)
|
|
493 |
{
|
|
494 |
const TMemSpyDriverInternalWalkHeapParamsCell& item = iWalkHeapCells[i];
|
|
495 |
if ( item.iCellAddress == aAddress )
|
|
496 |
{
|
|
497 |
ret = &item;
|
|
498 |
}
|
|
499 |
}
|
|
500 |
//
|
|
501 |
return ret;
|
|
502 |
}
|
|
503 |
|
|
504 |
|
|
505 |
|
|
506 |
|
|
507 |
|
|
508 |
|
|
509 |
|
|
510 |
|
|
511 |
|
|
512 |
|
|
513 |
|
|
514 |
|
|
515 |
|
|
516 |
|
|
517 |
|
|
518 |
|
|
519 |
TBool DMemSpyDriverLogChanHeapWalkUser::WalkerHandleHeapCell(TMemSpyDriverCellType aCellType, TAny* aCellAddress, TInt aLength, TInt aNestingLevel, TInt aAllocNumber )
|
|
520 |
{
|
|
521 |
TInt error = KErrNone;
|
|
522 |
//
|
|
523 |
if ( iHeapWalkInitialised )
|
|
524 |
{
|
|
525 |
TMemSpyDriverInternalWalkHeapParamsCell cell;
|
|
526 |
cell.iCellType = aCellType;
|
|
527 |
cell.iCellAddress = aCellAddress;
|
|
528 |
cell.iLength = aLength;
|
|
529 |
cell.iNestingLevel = aNestingLevel;
|
|
530 |
cell.iAllocNumber = aAllocNumber;
|
|
531 |
//
|
|
532 |
NKern::ThreadEnterCS();
|
|
533 |
error = iWalkHeapCells.Append( cell );
|
|
534 |
NKern::ThreadLeaveCS();
|
|
535 |
}
|
|
536 |
//
|
|
537 |
return ( error == KErrNone );
|
|
538 |
}
|