--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/perfsrv/memspy/Driver/Kernel/Source/SubChannels/MemSpyDriverLogChanHeapWalkUser.cpp Mon Oct 04 02:45:59 2010 +0300
@@ -0,0 +1,538 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:
+*
+*/
+
+#include "MemSpyDriverLogChanHeapWalkUser.h"
+
+// System includes
+#include <u32hal.h>
+#include <e32rom.h>
+#include <memspy/driver/memspydriverconstants.h>
+#include <memspy/driver/memspydriverobjectsshared.h>
+
+// Shared includes
+#include "MemSpyDriverOpCodes.h"
+#include "MemSpyDriverObjectsInternal.h"
+
+// User includes
+#include "MemSpyDriverHeap.h"
+#include "MemSpyDriverUtils.h"
+#include "MemSpyDriverDevice.h"
+#include "MemSpyDriverOSAdaption.h"
+#include "MemSpyDriverSuspensionManager.h"
+
+
+
+DMemSpyDriverLogChanHeapWalkUser::DMemSpyDriverLogChanHeapWalkUser( DMemSpyDriverDevice& aDevice, DThread& aThread )
+: DMemSpyDriverLogChanHeapBase( aDevice, aThread ), iWalkHeap( aDevice.OSAdaption() )
+ {
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::DMemSpyDriverLogChanHeapWalk() - this: 0x%08x", this ));
+ }
+
+
+DMemSpyDriverLogChanHeapWalkUser::~DMemSpyDriverLogChanHeapWalkUser()
+ {
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::~DMemSpyDriverLogChanHeapWalk() - START - this: 0x%08x", this ));
+
+ NKern::ThreadEnterCS();
+
+ WalkHeapClose();
+
+ NKern::ThreadLeaveCS();
+
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::~DMemSpyDriverLogChanHeapWalk() - END - this: 0x%08x", this ));
+ }
+
+
+
+
+
+
+
+TInt DMemSpyDriverLogChanHeapWalkUser::Request( TInt aFunction, TAny* a1, TAny* a2 )
+ {
+ TInt r = DMemSpyDriverLogChanBase::Request( aFunction, a1, a2 );
+ if ( r == KErrNone )
+ {
+ switch( aFunction )
+ {
+ case EMemSpyDriverOpCodeHeapUserWalkInit:
+ r = WalkHeapInit( (TMemSpyDriverInternalWalkHeapParamsInit*) a1 );
+ break;
+ case EMemSpyDriverOpCodeHeapUserWalkGetCellInfo:
+ r = WalkHeapGetCellInfo( (TAny*) a1, (TMemSpyDriverInternalWalkHeapParamsCell*) a2 );
+ break;
+ case EMemSpyDriverOpCodeHeapUserWalkReadCellData:
+ r = WalkHeapReadCellData( (TMemSpyDriverInternalWalkHeapCellDataReadParams*) a1 );
+ break;
+ case EMemSpyDriverOpCodeHeapUserWalkNextCell:
+ r = WalkHeapNextCell( (TUint) a1, (TMemSpyDriverInternalWalkHeapParamsCell*) a2 );
+ break;
+ case EMemSpyDriverOpCodeHeapUserWalkClose:
+ r = WalkHeapClose();
+ break;
+
+ default:
+ r = KErrNotSupported;
+ break;
+ }
+ }
+ //
+ return r;
+ }
+
+
+TBool DMemSpyDriverLogChanHeapWalkUser::IsHandler( TInt aFunction ) const
+ {
+ return ( aFunction > EMemSpyDriverOpCodeHeapUserWalkBase && aFunction < EMemSpyDriverOpCodeHeapUserWalkEnd );
+ }
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+TInt DMemSpyDriverLogChanHeapWalkUser::WalkHeapInit( TMemSpyDriverInternalWalkHeapParamsInit* aParams )
+ {
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapInit() - START"));
+ __ASSERT_ALWAYS( !iHeapWalkInitialised && iWalkHeap.Helper() == NULL, MemSpyDriverUtils::PanicThread( ClientThread(), EPanicHeapWalkPending ) );
+
+ TInt r = Kern::ThreadRawRead( &ClientThread(), aParams, &iHeapWalkInitialParameters, sizeof(TMemSpyDriverInternalWalkHeapParamsInit) );
+ if ( r == KErrNone )
+ {
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapInit - thread id: %d, vtable: 0x%08x, debugAllocator: %d", iHeapWalkInitialParameters.iTid, iHeapWalkInitialParameters.iRHeapVTable, iHeapWalkInitialParameters.iDebugAllocator));
+
+ r = OpenTempObject( iHeapWalkInitialParameters.iTid, EThread );
+ if ( r == KErrNone )
+ {
+ // Find the chunk with the correct handle
+ DThread* thread = (DThread*) TempObject();
+ if ( SuspensionManager().IsSuspended( *thread ) )
+ {
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapInit - thread: %O", thread));
+
+ // Open client's heap
+ r = iWalkHeap.OpenUserHeap(*thread, iHeapWalkInitialParameters.iDebugAllocator);
+
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapInit - opening client heap returned: %d", r) );
+
+ if ( r == KErrNone )
+ {
+ // Indicates that we've initiated a walk - so we can tell whether to close
+ // the chunk later on.
+ iHeapWalkInitialised = ETrue;
+ iWalkHeapCellIndex = 0;
+
+ // Walk the client's heap
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapInit - calling heap walker constructor..."));
+ RMemSpyDriverHeapWalker heapWalker(iWalkHeap);
+
+ TMemSpyDriverLogChanHeapWalkObserver observer( *this );
+ heapWalker.SetObserver( &observer );
+
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapInit - starting traversal..."));
+ r = heapWalker.Traverse();
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapInit - finished traversal - err: %d", r));
+ }
+
+ // If the initialise process didn't complete successfully, then we must be sure
+ // to release the associated heap chunk
+ if ( r < KErrNone )
+ {
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapInit - error scenario - releasing kernel heap chunk copy" ));
+ iWalkHeap.Close();
+ }
+ }
+ else
+ {
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapInit - parent process not suspended => KErrAccessDenied"));
+ r = KErrAccessDenied;
+ }
+
+ CloseTempObject();
+ }
+ else
+ {
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapInit - thread not found"));
+ }
+ }
+ else
+ {
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapInit - params read error: %d", r));
+ }
+
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapInit() - END - ret: %d", r));
+ return r;
+ }
+
+
+TInt DMemSpyDriverLogChanHeapWalkUser::WalkHeapNextCell( TUint aTid, TMemSpyDriverInternalWalkHeapParamsCell* aParams )
+ {
+ const TInt walkedHeapCellCount = iWalkHeapCells.Count();
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapNextCell() - START - current cell count: %d", walkedHeapCellCount));
+ __ASSERT_ALWAYS( iHeapWalkInitialised && iWalkHeap.Helper(), MemSpyDriverUtils::PanicThread( ClientThread(), EPanicHeapWalkNotInitialised ) );
+
+ // Open the original thread
+ TInt r = OpenTempObject( aTid, EThread );
+ if ( r == KErrNone )
+ {
+ // Get the thread handle and that we have suspended the process' threads
+ DThread* thread = (DThread*) TempObject();
+ if ( SuspensionManager().IsSuspended( *thread ) )
+ {
+ NKern::ThreadEnterCS();
+
+ if ( walkedHeapCellCount > 0 && iWalkHeapCellIndex >= 0 && iWalkHeapCellIndex < walkedHeapCellCount )
+ {
+ // Write back head cell to user-space
+ TMemSpyDriverInternalWalkHeapParamsCell cell( iWalkHeapCells[ iWalkHeapCellIndex++ ] );
+ 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 ));
+
+ r = Kern::ThreadRawWrite( &ClientThread(), aParams, &cell, sizeof(TMemSpyDriverInternalWalkHeapParamsCell) );
+ if ( r != KErrNone )
+ {
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapNextCell - params read error: %d", r));
+ }
+ }
+ else
+ {
+ r = KErrEof;
+ }
+
+ NKern::ThreadLeaveCS();
+ }
+ else
+ {
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapNextCell - parent process not suspended => KErrAccessDenied"));
+ r = KErrAccessDenied;
+ }
+
+ CloseTempObject();
+ }
+ else
+ {
+ Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapNextCell - thread not found");
+ }
+ //
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapNextCell() - END - ret: %d", r));
+ return r;
+ }
+
+
+TInt DMemSpyDriverLogChanHeapWalkUser::WalkHeapClose()
+ {
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapClose() - START"));
+ //
+ if ( iHeapWalkInitialised )
+ {
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapClose - heap walk was still open..."));
+ NKern::ThreadEnterCS();
+
+ iWalkHeap.Close();
+
+ // Discard handled cells
+ iWalkHeapCells.Reset();
+
+ iHeapWalkInitialised = EFalse;
+
+ NKern::ThreadLeaveCS();
+ }
+ //
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapClose() - END"));
+ return KErrNone;
+ }
+
+
+TInt DMemSpyDriverLogChanHeapWalkUser::WalkHeapReadCellData(TMemSpyDriverInternalWalkHeapCellDataReadParams* aParams)
+ {
+ __ASSERT_ALWAYS( iHeapWalkInitialised && iWalkHeap.Helper(), MemSpyDriverUtils::PanicThread( ClientThread(), EPanicHeapWalkNotInitialised ) );
+ //
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData() - START - thread id: %d, vtable: 0x%08x", iHeapWalkInitialParameters.iTid, iHeapWalkInitialParameters.iRHeapVTable));
+ //
+ TMemSpyDriverInternalWalkHeapCellDataReadParams params;
+ TInt r = Kern::ThreadRawRead( &ClientThread(), aParams, ¶ms, sizeof(TMemSpyDriverInternalWalkHeapCellDataReadParams) );
+ if ( r != KErrNone )
+ {
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData() - END - params read error: %d", r));
+ return r;
+ }
+
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData - cell: 0x%08x, readLen: %8d, writeAddr: 0x%08x", params.iCellAddress, params.iReadLen, params.iDes));
+
+ // Open the original thread
+ r = OpenTempObject( iHeapWalkInitialParameters.iTid, EThread );
+ if ( r == KErrNone )
+ {
+ // Get the thread handle
+ DThread* thread = (DThread*) TempObject();
+
+ // Check the threads in the process are suspended
+ if ( SuspensionManager().IsSuspended( *thread ) )
+ {
+ // Check we can find the cell in the cell list...
+ const TMemSpyDriverInternalWalkHeapParamsCell* cell = CellInfoForSpecificAddress( params.iCellAddress );
+
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData - cell: 0x%08x for address: 0x%08x", cell, params.iCellAddress ));
+
+ if ( cell )
+ {
+ const TInt cellLen = cell->iLength;
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData - cellLen: %d", cellLen ));
+
+ if ( params.iReadLen <= cellLen )
+ {
+
+ // Get user side descriptor length info
+ TInt destLen = 0;
+ TInt destMax = 0;
+ TUint8* destPtr = NULL;
+
+ r = Kern::ThreadGetDesInfo( &ClientThread(), params.iDes, destLen, destMax, destPtr, ETrue );
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData - user side descriptor: 0x%08x (0x%08x), len: %8d, maxLen: %8d, r: %d", params.iDes, destPtr, destLen, destMax, r ));
+
+ // Work out the start offset for the data...
+ if ( r == KErrNone && destMax >= params.iReadLen )
+ {
+ const TAny* srcPos = ((TUint8*) cell->iCellAddress);
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData - srcPos: 0x%08x", srcPos ));
+
+ // Read some data
+ r = Kern::ThreadRawRead( thread, srcPos, destPtr, params.iReadLen );
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData - read from thread returned: %d", r));
+
+ if ( r == KErrNone )
+ {
+ // Client will update descriptor length in this situation.
+ r = params.iReadLen;
+ }
+ }
+ else
+ {
+ if ( r != KErrBadDescriptor )
+ {
+ r = KErrArgument;
+ Kern::Printf( "DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData - error - user-descriptor isnt big enough for requested data" );
+ }
+ else
+ {
+ Kern::Printf( "DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData - error - bad or non-writable user-side descriptor" );
+ }
+ }
+ }
+ else
+ {
+ r = KErrArgument;
+ Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData - error - read length is bigger than cell length");
+ }
+ }
+ else
+ {
+ r = KErrArgument;
+ Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData - no cell at user supplied address!");
+ }
+ }
+ else
+ {
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData - parent process not suspended => KErrAccessDenied"));
+ r = KErrAccessDenied;
+ }
+
+ CloseTempObject();
+ }
+ else
+ {
+ Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData - thread not found");
+ }
+ //
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapReadCellData() - END result=%d", r));
+ return r;
+ }
+
+
+TInt DMemSpyDriverLogChanHeapWalkUser::WalkHeapGetCellInfo( TAny* aCellAddress, TMemSpyDriverInternalWalkHeapParamsCell* aParams )
+ {
+ __ASSERT_ALWAYS( iHeapWalkInitialised && iWalkHeap.Helper(), MemSpyDriverUtils::PanicThread( ClientThread(), EPanicHeapWalkNotInitialised ) );
+ //
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapGetCellInfo() - START - thread id: %d, vtable: 0x%08x", iHeapWalkInitialParameters.iTid, iHeapWalkInitialParameters.iRHeapVTable));
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapGetCellInfo - cell: 0x%08x", aCellAddress));
+
+ // Open the original thread
+ TInt r = OpenTempObject( iHeapWalkInitialParameters.iTid, EThread );
+ if (r != KErrNone)
+ {
+ Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapGetCellInfo() - END - thread not found");
+ return r;
+ }
+
+ // Get the thread handle
+ DThread* thread = (DThread*) TempObject();
+
+ // Check the threads in the process are suspended
+ if ( !SuspensionManager().IsSuspended( *thread ) )
+ {
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapGetCellInfo - END - parent process not suspended => KErrAccessDenied"));
+ CloseTempObject();
+ return KErrAccessDenied;
+ }
+
+ // Check we can find the cell in the cell list...
+ const TMemSpyDriverInternalWalkHeapParamsCell* cell = CellInfoForSpecificAddress( aCellAddress );
+ if ( cell == NULL )
+ {
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapGetCellInfo - no exact match for address: 0x%08x...", aCellAddress));
+
+ // If the cell still wasn't found, then let's look for any heap cell that contains
+ // the client-specified address (i.e. find the heap cell that contains the specified
+ // address).
+ if ( cell == NULL )
+ {
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapGetCellInfo - still couldnt find cell by exact address. Searching for the cell that contains the specified address..."));
+ cell = CellInfoForAddressWithinCellRange( aCellAddress );
+ }
+ }
+
+ if ( cell )
+ {
+ // Have enough info to write back to client now
+ 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 ));
+ r = Kern::ThreadRawWrite( &ClientThread(), aParams, cell, sizeof(TMemSpyDriverInternalWalkHeapParamsCell) );
+ }
+ else
+ {
+ r = KErrArgument;
+ Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapGetCellInfo - no cell at user supplied address!");
+ }
+
+ CloseTempObject();
+ //
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapWalk::WalkHeapGetCellInfo() - END result=%d", r));
+ return r;
+ }
+
+
+
+
+
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+
+
+
+
+
+
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+
+
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+
+
+
+
+
+
+const TMemSpyDriverInternalWalkHeapParamsCell* DMemSpyDriverLogChanHeapWalkUser::CellInfoForAddressWithinCellRange( TAny* aAddress ) const
+ {
+ const TMemSpyDriverInternalWalkHeapParamsCell* ret = NULL;
+ //
+ const TInt count = iWalkHeapCells.Count();
+ for(TInt i=0; i<count; i++)
+ {
+ const TMemSpyDriverInternalWalkHeapParamsCell& item = iWalkHeapCells[i];
+ const TAny* cellExtent = (TAny*) (TUint32( item.iCellAddress ) + item.iLength);
+ //
+ if ( aAddress >= item.iCellAddress && aAddress < cellExtent )
+ {
+ ret = &item;
+ }
+ }
+ //
+ return ret;
+ }
+
+
+const TMemSpyDriverInternalWalkHeapParamsCell* DMemSpyDriverLogChanHeapWalkUser::CellInfoForSpecificAddress( TAny* aAddress ) const
+ {
+ const TMemSpyDriverInternalWalkHeapParamsCell* ret = NULL;
+ //
+ const TInt count = iWalkHeapCells.Count();
+ for(TInt i=0; i<count; i++)
+ {
+ const TMemSpyDriverInternalWalkHeapParamsCell& item = iWalkHeapCells[i];
+ if ( item.iCellAddress == aAddress )
+ {
+ ret = &item;
+ }
+ }
+ //
+ return ret;
+ }
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+TBool DMemSpyDriverLogChanHeapWalkUser::WalkerHandleHeapCell(TMemSpyDriverCellType aCellType, TAny* aCellAddress, TInt aLength, TInt aNestingLevel, TInt aAllocNumber )
+ {
+ TInt error = KErrNone;
+ //
+ if ( iHeapWalkInitialised )
+ {
+ TMemSpyDriverInternalWalkHeapParamsCell cell;
+ cell.iCellType = aCellType;
+ cell.iCellAddress = aCellAddress;
+ cell.iLength = aLength;
+ cell.iNestingLevel = aNestingLevel;
+ cell.iAllocNumber = aAllocNumber;
+ //
+ NKern::ThreadEnterCS();
+ error = iWalkHeapCells.Append( cell );
+ NKern::ThreadLeaveCS();
+ }
+ //
+ return ( error == KErrNone );
+ }