--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/perfsrv/memspy/Driver/Kernel/Source/SubChannels/MemSpyDriverLogChanHeapDataKernel.cpp Mon Oct 04 02:45:59 2010 +0300
@@ -0,0 +1,461 @@
+/*
+* 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 "MemSpyDriverLogChanHeapDataKernel.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 "MemSpyDriverHeapWalker.h"
+#include "MemSpyDriverUserEventMonitor.h"
+#include "MemSpyDriverSuspensionManager.h"
+
+DMemSpyDriverLogChanHeapDataKernel::DMemSpyDriverLogChanHeapDataKernel( DMemSpyDriverDevice& aDevice, DThread& aThread )
+: DMemSpyDriverLogChanHeapDataBase( aDevice, aThread ), iKernelHeap( aDevice.OSAdaption() )
+ {
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::DMemSpyDriverLogChanHeapDataKernel() - this: 0x%08x", this ));
+ }
+
+TInt DMemSpyDriverLogChanHeapDataKernel::Request( TInt aFunction, TAny* a1, TAny* a2 )
+ {
+ TInt r = DMemSpyDriverLogChanHeapBase::Request( aFunction, a1, a2 );
+ if ( r == KErrNone )
+ {
+ if ( aFunction != EMemSpyDriverOpCodeHeapKernelDataFetchCellList )
+ {
+ ReleaseCellList();
+ }
+ //
+ switch( aFunction )
+ {
+ case EMemSpyDriverOpCodeHeapKernelDataGetInfo:
+ r = GetInfoData( (TMemSpyDriverInternalHeapRequestParameters*) a1 );
+ break;
+ case EMemSpyDriverOpCodeHeapKernelDataGetIsDebugKernel:
+ r = GetIsDebugKernel(a1);
+ break;
+ case EMemSpyDriverOpCodeHeapKernelDataFetchCellList:
+ r = FetchCellList( (TDes8*) a1 );
+ break;
+ case EMemSpyDriverOpCodeHeapKernelDataCopyHeap:
+ r = MakeKernelHeapCopy();
+ break;
+ case EMemSpyDriverOpCodeHeapKernelDataGetFull:
+ r = DMemSpyDriverLogChanHeapDataBase::GetFullData( (TMemSpyDriverInternalHeapDataParams*) a1 );
+ break;
+ case EMemSpyDriverOpCodeHeapKernelDataFreeHeapCopy:
+ FreeKernelHeapCopy();
+ break;
+
+ default:
+ r = KErrNotSupported;
+ break;
+ }
+ }
+ //
+ return r;
+ }
+
+
+TBool DMemSpyDriverLogChanHeapDataKernel::IsHandler( TInt aFunction ) const
+ {
+ return ( aFunction > EMemSpyDriverOpCodeHeapKernelDataBase && aFunction < EMemSpyDriverOpCodeHeapKernelDataEnd );
+ }
+
+TInt DMemSpyDriverLogChanHeapDataKernel::GetInfoData( TMemSpyDriverInternalHeapRequestParameters* aParams )
+ {
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetInfoData() - START" ) );
+
+ TInt r = Kern::ThreadRawRead( &ClientThread(), aParams, &iHeapInfoParams, sizeof(TMemSpyDriverInternalHeapRequestParameters) );
+ if ( r != KErrNone )
+ {
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetInfoDataUser - params read error: %d", r));
+ }
+ else
+ {
+ if (iHeapInfoParams.iUseKernelHeapCopy)
+ {
+ __ASSERT_ALWAYS( iKernelHeap.IsOpen(), MemSpyDriverUtils::PanicThread( ClientThread(), EPanicHeapKernelCopyExpected ) );
+ r = DMemSpyDriverLogChanHeapDataKernel::GetInfoData(iKernelHeap);
+ }
+ else
+ {
+ RMemSpyDriverRHeapKernelInPlace rHeap(OSAdaption());
+ r = rHeap.OpenKernelHeap();
+ if ( r == KErrNone )
+ {
+ r = DMemSpyDriverLogChanHeapDataKernel::GetInfoData(rHeap);
+ }
+ else
+ {
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetInfoData() - open err: %d", r ) );
+ }
+ }
+ }
+
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetInfoData() - END - ret: %d", r) );
+ return r;
+ }
+
+TInt DMemSpyDriverLogChanHeapDataKernel::GetInfoData(RMemSpyDriverRHeapBase& aHeap)
+ {
+ NKern::ThreadEnterCS();
+
+ TInt r = KErrNone;
+
+ // This object holds all of the info we will accumulate for the client.
+ TMemSpyHeapInfo masterHeapInfo;
+ masterHeapInfo.SetType(aHeap.GetTypeFromHelper());
+ masterHeapInfo.SetTid( 2 );
+ masterHeapInfo.SetPid( 1 );
+
+ // This is the RHeap-specific object that contains all RHeap info
+ TMemSpyHeapInfoRHeap& rHeapInfo = masterHeapInfo.AsRHeap();
+
+ // We must walk the heap in order to build statistics
+ TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetInfoData - calling heap walker constructor..."));
+ RMemSpyDriverHeapWalker heapWalker(aHeap);
+ if (iHeapInfoParams.iBuildFreeCellList || iHeapInfoParams.iBuildAllocCellList)
+ {
+ heapWalker.SetObserver( this );
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetInfoData - collecting cells"));
+ }
+ else
+ {
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetInfoData - not collecting cells"));
+ }
+
+ TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetInfoData - starting traversal..." ));
+
+#if defined( TRACE_TYPE_KERNELHEAP )
+ heapWalker.SetPrintDebug();
+#endif
+ if (r == KErrNone) r = heapWalker.Traverse();
+ TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetInfoData - finished traversal - err: %d", r ));
+
+ TMemSpyHeapStatisticsRHeap& rHeapStats = rHeapInfo.Statistics();
+ heapWalker.CopyStatsTo( rHeapStats );
+
+ // Get remaining meta data that isn't stored elsewhere
+ TMemSpyHeapMetaDataRHeap& rHeapMetaData = rHeapInfo.MetaData();
+ TFullName chunkName;
+ aHeap.Chunk().FullName(chunkName);
+ rHeapMetaData.SetChunkName(chunkName);
+ rHeapMetaData.SetChunkSize( (TUint) aHeap.Chunk().Size() );
+ rHeapMetaData.SetChunkHandle( &aHeap.Chunk() );
+ rHeapMetaData.SetChunkBaseAddress( OSAdaption().DChunk().GetBase(aHeap.Chunk()) );
+ rHeapMetaData.SetDebugAllocator(aHeap.Helper()->AllocatorIsUdeb());
+ rHeapMetaData.SetUserThread( EFalse );
+ rHeapMetaData.SetSharedHeap( ETrue );
+ rHeapMetaData.iHeapSize = aHeap.Helper()->CommittedSize();
+ rHeapMetaData.iAllocatorAddress = (TAny*)aHeap.Helper()->AllocatorAddress();
+ rHeapMetaData.iMinHeapSize = aHeap.Helper()->MinCommittedSize();
+ rHeapMetaData.iMaxHeapSize = aHeap.Helper()->MaxCommittedSize();
+
+ PrintHeapInfo( masterHeapInfo );
+
+ // Write free cells if requested
+ if ( r == KErrNone && (iHeapInfoParams.iBuildFreeCellList || iHeapInfoParams.iBuildAllocCellList))
+ {
+ r = PrepareCellListTransferBuffer();
+ }
+
+ if ( r >= KErrNone )
+ {
+ // Write results back to user-side
+ TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetInfoData - writing to user-side..."));
+ TMemSpyHeapInfo* kernelMasterInfo = iHeapInfoParams.iMasterInfo;
+ const TInt error = Kern::ThreadRawWrite( &ClientThread(), kernelMasterInfo, &masterHeapInfo, sizeof(TMemSpyHeapInfo) );
+ if ( error < 0 )
+ {
+ r = error;
+ }
+ }
+
+ NKern::ThreadLeaveCS();
+
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetInfoData() - END - ret: %d", r) );
+ return r;
+ }
+
+TInt DMemSpyDriverLogChanHeapDataKernel::GetIsDebugKernel(TAny* aResult)
+ {
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetIsDebugKernel() - START") );
+
+ TInt r = KErrNone;
+ TBool debugKernel = EFalse;
+
+ NKern::ThreadEnterCS();
+
+ RMemSpyDriverRHeapKernelInPlace rHeap(OSAdaption());
+ r = rHeap.OpenKernelHeap();
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetIsDebugKernel() - open kernel heap returned: %d", r) );
+
+ if ( r == KErrNone )
+ {
+ debugKernel = rHeap.Helper()->AllocatorIsUdeb();
+
+ // Tidy up
+ rHeap.Close();
+ }
+
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetIsDebugKernel() - debugKernel: %d", debugKernel) );
+
+ // Write back to user-land
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetIsDebugKernel() - writing to user-side...") );
+ r = Kern::ThreadRawWrite( &ClientThread(), aResult, &debugKernel, sizeof(TBool) );
+
+ NKern::ThreadLeaveCS();
+
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetIsDebugKernel() - END - ret: %d", r) );
+ return r;
+ }
+
+TInt DMemSpyDriverLogChanHeapDataKernel::OpenKernelHeap( RMemSpyDriverRHeapKernelFromCopy& aHeap )
+ {
+ TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::OpenKernelHeap(CP) - START") );
+
+ RAllocatorHelper kernelHeapHelper;
+ TInt r = kernelHeapHelper.OpenKernelHeap();
+ TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::OpenKernelHeap(CP) - open err: %d", r ) );
+ if ( r == KErrNone )
+ {
+ DChunk* kernelChunk = kernelHeapHelper.OpenUnderlyingChunk();
+ if (kernelChunk) {
+ // TODO can we lock just the kernel heap here to avoid the problem below?
+
+ // Make a new chunk that we can copy the kernel heap into. We cannot lock the system the entire time
+ // we need to do this, therefore there is no guarantee that the chunk will be large enough to hold the
+ // (current) heap data at the time we need to make the copy. We oversize the chunk by 1mb in the "hope"
+ // that it will be enough... :(
+ TChunkCreateInfo info;
+ info.iType = TChunkCreateInfo::ESharedKernelSingle;
+ info.iMaxSize = kernelChunk->MaxSize() + ( 1024 * 1024 );
+ info.iOwnsMemory = ETrue; // Use memory from system's free pool
+ info.iDestroyedDfc = NULL;
+ #ifdef __EPOC32__
+ info.iMapAttr = (TInt)EMapAttrFullyBlocking; // Full caching
+ #endif
+
+ // Holds a copy of the client's heap chunk
+ DChunk* heapCopyChunk;
+ TLinAddr heapCopyChunkAddress;
+ TUint32 heapCopyChunkMappingAttributes;
+ r = Kern::ChunkCreate( info, heapCopyChunk, heapCopyChunkAddress, heapCopyChunkMappingAttributes );
+ TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::OpenKernelHeap(CP) - creating chunk returned: %d", r));
+
+ // Unfortunately we have to commit every page in the copied chunk irrespective of whether that's the case
+ // with the kernel chunk due to mutex ordering enforced by the kernel. See the note about this below.
+ // This results in waste but with the way the kernel heap currently works it's not too bad.
+ // TODO fix this so it's more generic and doesn't rely on details of how the kernel heap works.
+ r = Kern::ChunkCommit(heapCopyChunk, 0, info.iMaxSize);
+
+ // Keep track of the pages we need to de-commit from the copy
+ // We allocate enough space here so we don't attempt to resise
+ TLinAddr* pageAddrsToDeCommit = new TLinAddr[info.iMaxSize / KPageSize];
+ TUint pageAddrsToDeCommitIndex = 0;
+
+ TBool cleanupCopyChunk = EFalse;
+ if ( r == KErrNone )
+ {
+ HBuf8* data = HBuf8::New(KPageSize);
+ if (data)
+ {
+ TAny* dataPtr = (TAny*) data->Ptr();
+
+ r = kernelHeapHelper.TryLock();
+ TInt actualKernelChunkSize = kernelChunk->Size();
+
+ if ( r == KErrNone )
+ {
+
+ // We now attempt to copy the kernel heap page by page
+ // This is because the kernel chunk is disconnected and hence can have pages
+ // in the middle of the heap that havent' been committed yet.
+ // TODO can we make this more efficient?
+ TInt err = KErrNone;
+ TUint8* kernChunkAddr = kernelChunk->Base();
+ TUint8* copyChunkAddr = (TUint8*) heapCopyChunkAddress;
+ while(err == KErrNone &&
+ kernChunkAddr < kernelChunk->Base() + kernelChunk->MaxSize())
+ {
+ XTRAP(err, XT_DEFAULT, memcpy(dataPtr, kernChunkAddr, KPageSize));
+ if (!err)
+ {
+ // It'd be nice if we could just commit the pages of the copy chunk to match
+ // the commited pages in the kernel heap here but that violates the following
+ // mutex ordering:
+ // mutex KernHeap order 8 [from kernelHeapHelper.TryLock()] vs
+ // mutex MemoryObjectMutex1 order 9 [from Kern::ChunkCommit()]
+ memcpy(copyChunkAddr, dataPtr, KPageSize);
+ }
+ else
+ {
+ // This page in the kernel heap wasn't committed so we can continue onto the next
+ err = KErrNone;
+ // but we do need to remember this so ...
+ pageAddrsToDeCommit[pageAddrsToDeCommitIndex++] = (TLinAddr) copyChunkAddr;
+ }
+ kernChunkAddr += KPageSize;
+ copyChunkAddr += KPageSize;
+ }
+ kernelHeapHelper.TryUnlock();
+ TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::OpenKernelHeap(CP) - copied kernel heap data" ));
+
+ // Now remove the bits we didn't actually need to commit
+ for(TUint i=0; i < pageAddrsToDeCommitIndex; i++)
+ {
+ r = heapCopyChunk->Decommit(pageAddrsToDeCommit[i], KPageSize);
+ if (r != KErrNone)
+ {
+ break;
+ }
+ }
+ if (r != KErrNone)
+ {
+ TInt oversizedEndLength = heapCopyChunk->Size() - actualKernelChunkSize;
+ r = heapCopyChunk->Decommit(actualKernelChunkSize, oversizedEndLength);
+ }
+
+ if (r == KErrNone)
+ {
+ // Transfer ownership of the copy heap chunk to the heap object.
+ TInt offset = (TInt) heapCopyChunkAddress - (TInt) kernelChunk->Base();
+ TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::OpenKernelHeap(CP) - heapCopyChunkAddress: 0x%08x, kernel chunk base: 0x%08x",
+ heapCopyChunkAddress, kernelChunk->Base()));
+ r = aHeap.AssociateWithKernelChunk( kernelChunk, heapCopyChunk, heapCopyChunkAddress, offset );
+ }
+ else
+ {
+ TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::OpenKernelHeap(CP) - failed to decommit all the unnecessary pages from the copy chunk - %d", r ));
+ cleanupCopyChunk = ETrue;
+ }
+ }
+ else
+ {
+ TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::OpenKernelHeap(CP) - failed to lock the kernel heap" ));
+ cleanupCopyChunk = ETrue;
+ }
+
+ delete data;
+ }
+ else
+ {
+ TRACE_KH( Kern::Printf("Failed to allocate a 4K buffer" ) );
+ r = KErrNoMemory;
+ cleanupCopyChunk = ETrue;
+ }
+ }
+ else
+ {
+ TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::OpenKernelHeap(CP) - copy chunk create error: %d", r ) );
+ cleanupCopyChunk = ETrue;
+ }
+
+ if (cleanupCopyChunk)
+ {
+ NKern::ThreadEnterCS();
+ Kern::ChunkClose( heapCopyChunk );
+ heapCopyChunk = NULL;
+ NKern::ThreadLeaveCS();
+ }
+
+ delete[] pageAddrsToDeCommit;
+ pageAddrsToDeCommit = NULL;
+ }
+ else
+ {
+ TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::OpenKernelHeap(CP) - failed to open the kernel chunk" ) );
+ }
+ }
+ else
+ {
+ TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::OpenKernelHeap(CP) - failed to open the kernel heap: %d", r ) );
+ }
+
+ kernelHeapHelper.Close();
+
+ if ( r != KErrNone )
+ {
+ aHeap.Close(); // also deals with the chunk
+ }
+
+
+ TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::OpenKernelHeap(CP) - END - ret: %d", r ) );
+ return r;
+ }
+
+TInt DMemSpyDriverLogChanHeapDataKernel::MakeKernelHeapCopy()
+ {
+ // First phase is to
+ // a) Open kernel heap
+ // b) Make a copy of the heap data
+ //
+ // The driver leaves kernel context with the copy of the kernel heap still associated with MemSpy's process.
+ // The second driver call will copy the chunk data to user side and release the kernel side chunk.
+
+ iKernelHeap.Reset();
+ NKern::ThreadEnterCS();
+
+ TInt r = OpenKernelHeap( iKernelHeap );
+ TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetFullDataInit() - open err: %d", r));
+
+ NKern::ThreadLeaveCS();
+
+ TRACE_KH( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetFullDataInit() - END - ret: %d", r));
+ return r;
+ }
+
+void DMemSpyDriverLogChanHeapDataKernel::FreeKernelHeapCopy()
+ {
+ iKernelHeap.Close();
+ }
+
+TInt DMemSpyDriverLogChanHeapDataKernel::GetFullData( TMemSpyDriverInternalHeapDataParams& aParams )
+ {
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetFullData() - START") );
+
+ TInt r = OpenTempObject( aParams.iTid, EThread );
+ if ( r != KErrNone )
+ {
+ Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetFullData() - END - thread not found");
+ return r;
+ }
+ // Don't need to check if the kernel heap contains DRM data unlike for user heaps
+
+ DThread* thread = (DThread*) TempObject();
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetFullData - thread: %O", thread) );
+
+ r = DoGetFullData(aParams, thread, iKernelHeap);
+
+ CloseTempObject();
+
+ TRACE( Kern::Printf("DMemSpyDriverLogChanHeapDataKernel::GetFullData() - END - ret: %d", r) );
+ return r;
+ }