--- a/kernel/eka/debug/crashMonitor/src/scmonitor.cpp Wed Oct 20 13:58:28 2010 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,1032 +0,0 @@
-// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
-// All rights reserved.
-// This component and the accompanying materials are made available
-// under the terms of the License "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:
-// e32\debug\crashMonitor\src\scmonitor.cpp
-// Core dump server - Kernel side crash monitor
-//
-//
-
-/**
- @file
- @internalTechnology
-*/
-
-#include <scmonitor.h>
-#include <kernel/monitor.h>
-#include <assp.h>
-#include <drivers/crashflash.h>
-#include <kernel/klib.h>
-#include <crashlogwalker.h>
-#include <scmconfigitem.h>
-
-#include "scmdatasave.h"
-
-GLDEF_D SCMonitor TheSCMonitor; //global definition of SCMonitor
-
-//keep things 4 byte aligned
-const TInt KRestartType = SCMonitor::ESoftRestart;
-
-/**
-SCMonitor constructor
-*/
-SCMonitor::SCMonitor()
- : iMultiCrashInfo(NULL)
- {
- }
-
-SCMonitor::~SCMonitor()
- {
- delete iMultiCrashInfo;
- }
-
-/**
- Print data to the corresponding output channel. Derived from monitor
- @param aDes the buffer containing the data
- */
-void SCMonitor::Print (const TDesC8& aDes )
- {
- //intended to do nothing
- }
-
-/**
- * Allocates resources for SCMonitor
- * cant fully construct in constructor as we are a kernel extension and resources are limited when we are created
- */
-void SCMonitor::StableConstruction()
- {
- LOG_CONTEXT
- iDataSave = new SCMDataSave(this, TheSCMonitor.iFlash);
-
- //Configuration object for use upon crash
- iScmConfig = new SCMConfiguration();
- TInt err = iScmConfig->SetDefaultConfig();
- if(KErrNone != err)
- {
- CLTRACE1("SCMonitor::StableConstruction - Unable to set default config err = %d", err);
- }
-
-
-#ifdef NO_MULTICRASHINFO
- iMultiCrashInfo = NULL;
-#else
-
- //We need to take a look at the flash map from variant_norflash_layout.h
- iMultiCrashInfo = new SCMMultiCrashInfo();
-
- TUint numberBlocks = KCrashLogSize / KCrashLogBlockSize;
- for(TUint32 cnt = 0; cnt < numberBlocks; cnt++)
- {
- iMultiCrashInfo->AddBlock(new SCMCrashBlockEntry(cnt, cnt * KCrashLogBlockSize, KCrashLogBlockSize));
- }
-#endif
- }
-
-/**
- * Start a secondary DFC queue for the Flash and Init the flash in the variant(h4)
- * @param aAny
- */
-void StartSecondary (TAny* )
- {
- LOG_CONTEXT
- //InitFlash is implemented in the variant as it creates a variant
- //specific derived CrashFlash
- TheSCMonitor.InitFlash ( );
- TheSCMonitor.StableConstruction();
- }
-
-/**
- * Global method to create a dfc queue
- * @param Method to intialise the flash.
- * @param Null
- * @param Gets the address of the supervisor thread DFC queue
- * @param TDfcQ priority number
- * @return a DFC object
- */
-GLDEF_C TDfc StartSecondaryDfc(&StartSecondary, NULL, Kern::SvMsgQue(), KMaxDfcPriority-1);
-
-/**
- * Kernel Main module entry - Own implementation( similar to crash logger)
- * @param aReason reason to enter to the method
- * @return One of the system wide codes
- */
-GLDEF_C TInt KernelModuleEntry(TInt aReason)
- {
- if(aReason==KModuleEntryReasonVariantInit0)
- {
- new(&TheSCMonitor) SCMonitor;
- // We are going to register the system Crash monitor here so that the order
- // the monitor modules are placed in rom is preserved.
- // The monitor is not fully intialised here.
- //the variant target is missing as we still have to finalise on the crash flash
- //implementation. H2 & H4 doesnt support currently.
- LOG_CONTEXT
- CLTRACE("Installing System Crash Monitor");
- Monitor::RegisterMonitorImpl (&TheSCMonitor );
- return KErrNone;
- }
- else if (aReason==KModuleEntryReasonExtensionInit0 )
- {
- return KErrNone;
- }
- else if (aReason==KModuleEntryReasonExtensionInit1 )
- {
- LOG_CONTEXT
- CLTRACE("Enqueing dfc to init crash flash for System Crash Monitor after all modules loaded");
- StartSecondaryDfc.Enque ( );
- return KErrNone;
- }
- return KErrArgument;
- }
-
-/**
- Method to intialize the system crash monitor
- @param aCategory the fault category type
- @param aReason the reason for crash
- @return restart type
- */
-TInt SCMonitor::Init2 (TAny* aCategory, TInt aReason )
- {
- LOG_CONTEXT
- __KTRACE_OPT(KALWAYS, Kern::Printf("\n\nSystem Crash Monitor Launched: To Analyse Crash Produced Use Core Dump Server\n"));
-
- //Start logging the data:
- //Need to lock kernel to access object containers (it technically is anyway, but flag isnt set)
- NKern::Lock();
- DoCrash(aCategory, aReason);
- NKern::Unlock();
-
- __KTRACE_OPT(KALWAYS, Kern::Printf("System Crash Monitor Finished: Log Size = [%d]\n", iDataSave->iCrashInf.iLogSize));
-
- return KRestartType;
- }
-
-/**
- * This is responsible for setting up any structures required for processing of the crash
- * @param aCategory the fault category type
- * @param aReason
- */
-void SCMonitor::DoCrash(TAny* aCategory, TInt aReason )
- {
- // get debug mask
- TInt dbgMask = Kern::SuperPage().iDebugMask[0];
-
- // if we are writing to the comm port then we need to turn off other debug messages
- if( iDataSave->GetWriteSelect() == SCMDataSave::EWriteComm)
- {
- Kern::SuperPage().iDebugMask[0] = 0;
- }
-
- if(!aCategory)
- {
- CLTRACE("\tNULL category retrieved and returning");
- TheSCMonitor.iFlash->EndTransaction();
- return;
- }
-
- iFrame = NULL;
-
- CLTRACE("\tAbout to set category -- note: can occasionaly crash board");
- iFaultCategory = *(const TDesC8*)aCategory; // this crashes the board sometimes
- iFaultReason = aReason;
- Epoc::SetMonitorExceptionHandler ((TLinAddr)HandleException );
-
- // get the first start block
- // will retieve start of flash by default
- SCMCrashBlockEntry block;
- TInt err = GetNextCrashStartPoint(block); // will also attempt to read iScmConfig
-
- if(KErrNone == err)
- {
- CLTRACE2("SCMonitor::DoCrash next crash will be written at blocknumber = %d offset %d"
- , block.iBlockNumber, block.iBlockOffset);
- }
- else
- {
- CLTRACE1("SCMonitor::DoCrash Failed to find a valid block to write to, can not continue. err = [%d]", err);
- return;
- }
-
- TUint crashId = block.iBlockNumber;
- iDataSave->iWriter->ResetBytesWritten();
-
- //Write the crash (1st pass is to gather header data)
- TInt spaceRequired = ProcessCrash(block, crashId, EFalse);
-
- // now do the real write
- // prepare flash for data
- TheSCMonitor.iFlash->StartTransaction();
- TheSCMonitor.iFlash->SetWritePos(block.iBlockOffset);
-
- //write the crash this time
- ProcessCrash(block, crashId, ETrue);
-
- TheSCMonitor.iFlash->EndTransaction();
-
- // restore debug mask
- Kern::SuperPage().iDebugMask[0] = dbgMask;
- }
-
-
-/**
- * This walks the existing crash log and finds out where current crashes finish
- * @param aBlockEntry Block to use. Only valid if KErrNone is returned.
- * @return One of the OS wide codes
- */
-TInt SCMonitor::GetNextCrashStartPoint(SCMCrashBlockEntry& aBlockEntry)
- {
- LOG_CONTEXT
-
- //First thing is to try and read the config
- TBool configFound = (iDataSave->ReadConfig(*iScmConfig) == KErrNone);
-
- if( iMultiCrashInfo)
- {
- /**
- * data save has been configured to use multicrash info to find the next block we are on we need to scan each
- * block to see if it contains a valid header. if we find an empty block in our block list then that is the
- * one we will use if we find no empty blocks then we have no room left
- */
- iMultiCrashInfo->Reset();
- SCMCrashBlockEntry* block = iMultiCrashInfo->GetNextBlock();
- TBool blockFound = EFalse;
-
- //For any crashes in flash, we need to record where they end, so that we can then go to the next
- //block after the one in which it ends
- TInt crashEndPoint = 0;
-
- while(block)
- {
- CLTRACE1("SCMonitor::GetNextCrashStartPoint Processing block number %d", block->iBlockNumber );
-
- //If we have already found our block, we should erase subsequent ones for use
- if(blockFound)
- {
- TInt err = EraseFlashBlock(*block);
- if(err != KErrNone)
- {
- return err;
- }
-
- block = iMultiCrashInfo->GetNextBlock();
- continue;
- }
-
- //is this block before a crash end? if it is, we cant use it as a crash can span multiple blocks
- if(block->iBlockOffset >= crashEndPoint)
- {
- //special condition if we have a config
- TUint startPos = block->iBlockOffset;
- TUint skipBytes = 0;
- if(configFound && block->iBlockOffset == 0)
- {
- startPos+=iScmConfig->GetSize();
-
- //must align to flash for read
- skipBytes = startPos % KFlashAlignment;
- startPos -= skipBytes;
- }
-
- // try and read an info header at these flash coords
- TBuf8<TCrashInfoHeader::KSCMCrashInfoMaxSize + KFlashAlignment> buf;
- buf.SetLength(TCrashInfoHeader::KSCMCrashInfoMaxSize + KFlashAlignment);
-
- CLTRACE1("(SCMonitor::GetNextCrashStartPoint) reading at offset %d", block->iBlockOffset);
-
- TheSCMonitor.iFlash->SetReadPos(startPos);
- TheSCMonitor.iFlash->Read(buf);
-
- // create the buffer applying the offset of bytes skipped
- TByteStreamReader reader(const_cast<TUint8*> (buf.Ptr() + skipBytes));
-
- TCrashInfoHeader header;
- TInt err = header.Deserialize(reader);
-
- if(err == KErrCorrupt)
- {
- CLTRACE2("(SCMonitor::GetNextCrashStartPoint) Found empty block blocknumber %d blockoffset = %d"
- , block->iBlockNumber, block->iBlockOffset);
-
- blockFound = ETrue;
- aBlockEntry = *block;
-
- continue; //Dont get next block, as next run will erase this current block for use
- }
- else
- {
- crashEndPoint = header.iLogSize + startPos;
- CLTRACE3("(SCMonitor::GetNextCrashStartPoint) In block [%d] we found a valid crash header. This crash finishes at [%d] [0x%X]", block->iBlockNumber, crashEndPoint, crashEndPoint);
- }
- }
-
- block = iMultiCrashInfo->GetNextBlock();
- }
-
- if(blockFound)
- {
- return KErrNone;
- }
- else
- {
- //CLTRACE("(SCMonitor::GetNextCrashStartPoint) No available blocks TREATING as NO MULTICRASH INFO will write to default block");
- //In this case should we just overwrite old crashes and return the first block as the comment above suggests
- //return blockFound;
- }
- }
-
- // no multi crash info supplied - use default first block settings
- TInt err = EraseEntireFlashPartition();
- if(err != KErrNone)
- {
- CLTRACE1("Unable to delete area required to log to flash. Aborting. Error - [%d]", err);
- return err;
- }
-
- aBlockEntry = SCMCrashBlockEntry(0,0,0);
- return KErrNone;
- }
-
-/**
- * Handles the processing of the crash
- * @return The size of the crash log (including header) that has been/will be written
- */
-TInt SCMonitor::ProcessCrash(const SCMCrashBlockEntry& aBlock, TUint aCrashId, TBool aCommit)
- {
- LOG_CONTEXT
- CLTRACE5("aBlock.iBlockOffset = [%d] [0x%X] aBlock.iBlockNumber = %d aBlock.iBlockSize = [%d] [0x%X]",
- aBlock.iBlockOffset, aBlock.iBlockOffset, aBlock.iBlockNumber, aBlock.iBlockSize, aBlock.iBlockSize);
-
- // reset writer for start of each crash
- iDataSave->iWriter->ResetBytesWritten();
- TInt logLevel = 0;
-
- if(aCommit)
- {
- logLevel = KALWAYS;
- iDataSave->iWriter->EnablePhysicalWriting();
- }
- else
- {
-#if defined(_DEBUG)
- logLevel = KDEBUGGER;
-#else
- logLevel = KALWAYS; //Doesnt matter, KTRACE OPT is empty for rel builds
- if(logLevel != KALWAYS)
- {
- //This is to avoid warning
- }
-#endif
-
- iDataSave->iWriter->DisablePhysicalWriting();
- }
-
- iDataSave->SetByteCount(aBlock.iBlockOffset);
- if(aBlock.iBlockOffset == 0 && aBlock.iBlockNumber == 0)
- {
- // this is the first crash - we need to save the config here first
- CLTRACE("(SCMonitor::ProcessCrash) - this is block 0 - WRITING CONFIG");
- iDataSave->LogConfig(*iScmConfig);
-
- //Config is not part of crash so reset bytes written
- iDataSave->SetCrashStartingPoint(iDataSave->iWriter->GetBytesWritten());
- }
- else
- {
- iDataSave->SetCrashStartingPoint(aBlock.iBlockOffset);
- }
-
- iDataSave->iWriter->ResetBytesWritten();
-
- TUint32 logSize = 0;
- TUint sizeOfObjectDumped = 0;
-
- TInt err = iDataSave->LogCrashHeader(iFaultCategory, iFaultReason, aCrashId, sizeOfObjectDumped);
- if(KErrNone != err)
- {
- CLTRACE("System Crash Monitor: Failed to create crash info header - (TCrashInfo)");
- return KRestartType;
- }
-
- logSize += sizeOfObjectDumped;
-
- //Now we must read the configuration to use. This is held at the start of our flash partition
- //and managed by the iConfig object
- iScmConfig->ResetToHighestPriority();
-
- //Always want the crash context
- iDataSave->iHdr.iCTFullRegOffset = logSize + iDataSave->GetCrashStartingPoint();
-
- err = iDataSave->LogCPURegisters(sizeOfObjectDumped);
- if(KErrNone != err)
- {
- CLTRACE1("\tError logging full registers = %d", err);
- }
-
- logSize += sizeOfObjectDumped;
-
- CLTRACE("\tAbout to enter processing loop");
- SCMDataSave::TDataToDump dump;
-
- for(;;)
- {
- //now we get each item by priority from the configuration
- TConfigItem* configItem = iScmConfig->GetNextItem();
-
- if(!configItem)
- {
- // end of list
- break;
- }
-
- CLTRACE1("\nLooking at item type [%d]", configItem->GetDataType());
- if(configItem->GetSpaceRequired() > iDataSave->SpaceRemaining())
- {
- __KTRACE_OPT(logLevel, Kern::Printf("\t\tFor Item Type [%d]: Unable to log [0x%X] [%d] bytes because we only have [0x%X] [%d] bytes left", configItem->GetDataType(), configItem->GetSpaceRequired(), configItem->GetSpaceRequired(), iDataSave->SpaceRemaining(), iDataSave->SpaceRemaining()));
- continue;
- }
- else
- {
- CLTRACE1("Will require [%d] bytes for this item", configItem->GetSpaceRequired());
- }
-
- // only interested in logging items with priority > 0
- if( configItem->GetPriority() <= 0)
- {
- CLTRACE1("\tIgnored config item type %d priority 0", configItem->GetDataType());
- continue;
- }
-
- //there are a lot of TUints in the hdr to record where we wrote this item.
- //This will point to the one of interest for this configItem
- TUint32* offsetPointer = NULL;
-
- //now we check the type of data we wish to dump
- switch(configItem->GetDataType())
- {
- case TConfigItem::ECrashedThreadMetaData:
- {
- __KTRACE_OPT(logLevel, Kern::Printf("\tDoing: ECrashedThreadMetaData at [%d] offset from [%d]", iDataSave->iWriter->GetBytesWritten(), iDataSave->GetCrashStartingPoint()));
-
- err = LogThreadMetaData(SCMDataSave::EThreadSpecific, sizeOfObjectDumped);
- offsetPointer = &(iDataSave->iHdr.iCTMetaOffset);
-
- break;
- }
- case TConfigItem::EThreadsMetaData:
- {
- __KTRACE_OPT(logLevel, Kern::Printf("\tDoing: EThreadsMetaData at [%d] offset from [%d]", iDataSave->iWriter->GetBytesWritten(), iDataSave->GetCrashStartingPoint()));
-
- //record location we are writing to in the header
- iDataSave->iHdr.iTLstOffset = iDataSave->iWriter->GetBytesWritten();
- err = LogThreadMetaData(SCMDataSave::ESystemWide, sizeOfObjectDumped);
- offsetPointer = &(iDataSave->iHdr.iTLstOffset);
-
- break;
- }
- case TConfigItem::ECrashedProcessMetaData:
- {
- __KTRACE_OPT(logLevel, Kern::Printf("\tDoing: ECrashedProcessMetaData at [%d] offset from [%d]", iDataSave->iWriter->GetBytesWritten(), iDataSave->GetCrashStartingPoint()));
-
- err = LogProcessMetaData(SCMDataSave::EProcessSpecific, sizeOfObjectDumped);
- offsetPointer = &(iDataSave->iHdr.iCPMetaOffset);
-
- break;
- }
- case TConfigItem::EProcessMetaData:
- {
- __KTRACE_OPT(logLevel, Kern::Printf("\tDoing: EProcessMetaData at [%d] offset from [%d]", iDataSave->iWriter->GetBytesWritten(), iDataSave->GetCrashStartingPoint()));
-
- err = LogProcessMetaData(SCMDataSave::ESystemWide, sizeOfObjectDumped);
- offsetPointer = &(iDataSave->iHdr.iPLstOffset);
-
- break;
- }
- case TConfigItem::ECrashedProcessUsrStacks:
- {
- __KTRACE_OPT(logLevel, Kern::Printf("\tDoing: ECrashedProcessUsrStacks at [%d] offset from [%d]", iDataSave->iWriter->GetBytesWritten(), iDataSave->GetCrashStartingPoint()));
-
- //define what we wish to dump
- dump.iMetaData = EFalse;
- dump.iCodeSegs = EFalse;
- dump.iStk = SCMDataSave::EUsrStack;
- dump.iReg = SCMDataSave::ERegSetNone;
- err = LogObjectContainers(EThread, SCMDataSave::EProcessSpecific, dump, sizeOfObjectDumped);
- offsetPointer = &(iDataSave->iHdr.iCTUsrStkOffset);
-
- break;
- }
- case TConfigItem::EThreadsUsrStack:
- {
- __KTRACE_OPT(logLevel, Kern::Printf("\tDoing: EThreadsUsrStack at [%d] offset from [%d]", iDataSave->iWriter->GetBytesWritten(), iDataSave->GetCrashStartingPoint()));
-
- //define what we wish to dump
- dump.iMetaData = EFalse;
- dump.iCodeSegs = EFalse;
- dump.iStk = SCMDataSave::EUsrStack;
- dump.iReg = SCMDataSave::ERegSetNone;
-
- err = LogObjectContainers(EThread, SCMDataSave::ESystemWide, dump, sizeOfObjectDumped);
- offsetPointer = &(iDataSave->iHdr.iSysSvrStkOffset);
-
- break;
- }
- case TConfigItem::ECrashedProcessSvrStacks:
- {
- __KTRACE_OPT(logLevel, Kern::Printf("\tDoing: ECrashedProcessSvrStacks at [%d] offset from [%d]", iDataSave->iWriter->GetBytesWritten(), iDataSave->GetCrashStartingPoint()));
-
- //define what we wish to dump
- dump.iMetaData = EFalse;
- dump.iCodeSegs = EFalse;
- dump.iStk = SCMDataSave::ESvrStack;
- dump.iReg = SCMDataSave::ERegSetNone;
-
- err = LogObjectContainers(EThread, SCMDataSave::EProcessSpecific, dump, sizeOfObjectDumped);
- offsetPointer = &(iDataSave->iHdr.iCTSvrStkOffset);
-
- break;
- }
- case TConfigItem::EThreadsSvrStack:
- {
- __KTRACE_OPT(logLevel, Kern::Printf("\tDoing: EThreadsSvrStack at [%d] offset from [%d]", iDataSave->iWriter->GetBytesWritten(), iDataSave->GetCrashStartingPoint()));
-
- //define what we wish to dump
- dump.iMetaData = EFalse;
- dump.iCodeSegs = EFalse;
- dump.iStk = SCMDataSave::ESvrStack;
- dump.iReg = SCMDataSave::ERegSetNone;
-
- err = LogObjectContainers(EThread, SCMDataSave::ESystemWide, dump, sizeOfObjectDumped);
- offsetPointer = &(iDataSave->iHdr.iSysSvrStkOffset);
-
- break;
- }
- case TConfigItem::EThreadsUsrRegisters:
- {
- __KTRACE_OPT(logLevel, Kern::Printf("\tDoing: EThreadsUsrRegisters at [%d] offset from [%d]", iDataSave->iWriter->GetBytesWritten(), iDataSave->GetCrashStartingPoint()));
-
- //define what we wish to dump
- dump.iMetaData = EFalse;
- dump.iCodeSegs = EFalse;
- dump.iStk = SCMDataSave::EStackTypeNone;
- dump.iReg = SCMDataSave::EUserRegisters;
-
- err = LogObjectContainers(EThread, SCMDataSave::ESystemWide, dump, sizeOfObjectDumped);
- offsetPointer = &(iDataSave->iHdr.iSysUsrRegOffset);
-
- break;
- }
- case TConfigItem::EThreadsSvrRegisters:
- {
- __KTRACE_OPT(logLevel, Kern::Printf("\tDoing: EThreadsSvrRegisters at [%d] offset from [%d]", iDataSave->iWriter->GetBytesWritten(), iDataSave->GetCrashStartingPoint()));
-
- //define what we wish to dump
- dump.iMetaData = EFalse;
- dump.iCodeSegs = EFalse;
- dump.iStk = SCMDataSave::EStackTypeNone;
- dump.iReg = SCMDataSave::ESupervisorRegisters;
-
- err = LogObjectContainers(EThread, SCMDataSave::ESystemWide, dump, sizeOfObjectDumped);
- offsetPointer = &(iDataSave->iHdr.iSysSvrRegOffset);
-
- break;
- }
- case TConfigItem::EExceptionStacks:
- {
- __KTRACE_OPT(logLevel, Kern::Printf("\tDoing: EExceptionStacks at [%d] offset from [%d]", iDataSave->iWriter->GetBytesWritten(), iDataSave->GetCrashStartingPoint()));
-
- err = iDataSave->LogExceptionStacks(sizeOfObjectDumped);
- offsetPointer = &(iDataSave->iHdr.iExcStkOffset);
-
- break;
- }
- case TConfigItem::ECrashedProcessCodeSegs:
- {
- __KTRACE_OPT(logLevel, Kern::Printf("\tDoing: ECrashedProcessCodeSegs at [%d] offset from [%d]", iDataSave->iWriter->GetBytesWritten(), iDataSave->GetCrashStartingPoint()));
-
- //define what we wish to dump
- dump.iMetaData = EFalse;
- dump.iCodeSegs = ETrue;
- dump.iStk = SCMDataSave::EStackTypeNone;
- dump.iReg = SCMDataSave::ERegSetNone;
-
- err = LogObjectContainers(EProcess, SCMDataSave::EProcessSpecific, dump, sizeOfObjectDumped);
- offsetPointer = &(iDataSave->iHdr.iCPCodeSegOffset);
-
- break;
- }
- case TConfigItem::EProcessCodeSegs:
- {
- __KTRACE_OPT(logLevel, Kern::Printf("\tDoing: EProcessCodeSegs at [%d] offset from [%d]", iDataSave->iWriter->GetBytesWritten(), iDataSave->GetCrashStartingPoint()));
-
- //define what we wish to dump
- dump.iMetaData = EFalse;
- dump.iCodeSegs = ETrue;
- dump.iStk = SCMDataSave::EStackTypeNone;
- dump.iReg = SCMDataSave::ERegSetNone;
- err = LogObjectContainers(EProcess, SCMDataSave::ESystemWide, dump, sizeOfObjectDumped);
- offsetPointer = &(iDataSave->iHdr.iSysCodeSegOffset);
-
- break;
- }
- case TConfigItem::ETraceData:
- {
- __KTRACE_OPT(logLevel, Kern::Printf("\tDoing: ETraceData at [%d] offset from [%d]", iDataSave->iWriter->GetBytesWritten(), iDataSave->GetCrashStartingPoint()));
-
- err = iDataSave->LogTraceBuffer(configItem->GetSizeToDump(), sizeOfObjectDumped);
- offsetPointer = &(iDataSave->iHdr.iTraceOffset);
-
- break;
- }
- case TConfigItem::ELocks:
- {
- __KTRACE_OPT(logLevel, Kern::Printf("\tDoing: ELocks at [%d] offset from [%d]", iDataSave->iWriter->GetBytesWritten(), iDataSave->GetCrashStartingPoint()));
-
- err = iDataSave->LogLocks(sizeOfObjectDumped);
- offsetPointer = &(iDataSave->iHdr.iScmLocksOffset);
-
- break;
- }
- case TConfigItem::EKernelHeap:
- {
- __KTRACE_OPT(logLevel, Kern::Printf("\tDoing: EKernelHeap at [%d] offset from [%d]", iDataSave->iWriter->GetBytesWritten(), iDataSave->GetCrashStartingPoint()));
-
- err = iDataSave->LogKernelHeap(sizeOfObjectDumped);
- offsetPointer = &(iDataSave->iHdr.iKernelHeapOffset);
-
- break;
- }
- case TConfigItem::EVariantSpecificData:
- {
- __KTRACE_OPT(logLevel, Kern::Printf("\tDoing: EVariantSpecificData at [%d] offset from [%d]", iDataSave->iWriter->GetBytesWritten(), iDataSave->GetCrashStartingPoint()));
-
- err = iDataSave->LogVariantSpecificData(sizeOfObjectDumped);
- offsetPointer = &(iDataSave->iHdr.iVarSpecInfOffset);
-
- break;
- }
- case TConfigItem::ERomInfo:
- {
- __KTRACE_OPT(logLevel, Kern::Printf("\tDoing: ERomInfo at [%d] offset from [%d]", iDataSave->iWriter->GetBytesWritten(), iDataSave->GetCrashStartingPoint()));
-
- err = iDataSave->LogRomInfo(sizeOfObjectDumped);
- offsetPointer = &(iDataSave->iHdr.iRomInfoOffset);
-
- break;
- }
- //unknown configuration type - something bad is going on
- default: return 0;
- }
-
- if(KErrNone != err)
- {
- __KTRACE_OPT(logLevel, Kern::Printf("\tError logging data: [%d] Type = [%d]", err, aBlock.iBlockOffset));
- continue;
- }
-
- //Set the space required so next time around we will know in advance how much space we need
- configItem->SetSpaceRequired(sizeOfObjectDumped);
-
- //Note: the following steps are only required for the first time we call process crash. The second time,
- //when physical writing is enabled, these will have been written already and so they dont matter
-
- //update the offset and logsize if we are going to dump this item
- TUint32 absoluteLogPos = logSize + iDataSave->GetCrashStartingPoint();
- if(absoluteLogPos+sizeOfObjectDumped < iDataSave->MaxLogSize())
- {
- //now, we must record where in the crash log this item will be dumped
- *offsetPointer = absoluteLogPos;
- logSize += sizeOfObjectDumped;
- }
- }
-
- iDataSave->iCrashInf.iLogSize = logSize;
- iDataSave->iWriter->FlushCache();
-
- return iDataSave->iCrashInf.iLogSize;
- }
-
-/**
- * Logs the meta data for processes
- * @param aCurrentProcess - scope to dump
- * @return one of the OS wide codes
- */
-TInt SCMonitor::LogProcessMetaData(SCMDataSave::TDumpScope aScope, TUint& aSizeDumped) const
- {
- LOG_CONTEXT
-
- SCMDataSave::TDataToDump dump;
- dump.iMetaData = ETrue;
-
- return LogObjectContainers(EProcess, aScope, dump, aSizeDumped);
- }
-
-/**
- *
- * @param aCurrentThread - to only do the current (crashed thread) or to do all the others
- * @return one of the OS wide codes
- */
-TInt SCMonitor::LogThreadMetaData(SCMDataSave::TDumpScope aScope, TUint& aSizeDumped) const
- {
- LOG_CONTEXT
-
- SCMDataSave::TDataToDump dump;
- dump.iMetaData = ETrue;
-
- return LogObjectContainers(EThread, aScope, dump, aSizeDumped);
- }
-
-/**
- * Generic method that looks at all kernel objects of aObjectType
- * @param aObjectType
- * @param aDumpScope - if you wish to dump for the the current process, current thread or entire system
- * @param aDataToDump - data you wish to dump
- * @param aSizeDumped - records how much was dumped
- * @return
- */
-TInt SCMonitor::LogObjectContainers(TObjectType aObjectType, SCMDataSave::TDumpScope aDumpScope, const SCMDataSave::TDataToDump& aDataToDump, TUint& aSizeDumped) const
- {
- aSizeDumped = 0;
-
- if(aObjectType >= ENumObjectTypes)
- {
- return KErrArgument;
- }
-
- //Get the object container for the given object type
- DObjectCon* objectContainer = Kern::Containers()[aObjectType];
- if(objectContainer == NULL)
- {
- CLTRACE("tFailed to get object container");
- return KErrNotFound;
- }
-
- //Must check the mutex on this is ok otherwise the data will be in an inconsistent state
- if(objectContainer->iMutex->iHoldCount)
- {
- CLTRACE("\tObject Container is in an inconsistant state");
- return KErrCorrupt;
- }
-
- TInt numObjects = objectContainer->Count();
- TInt err = KErrNone;
-
- for(TInt cnt = 0; cnt< numObjects; cnt ++)
- {
- DObject* object = (*objectContainer)[cnt];
-
- //Are we interested in the object? scope only relevant for thread and process objects, for others, the scope is implicit
- if(aObjectType == EThread)
- {
- switch(aDumpScope)
- {
- case SCMDataSave::EThreadSpecific :
- {
- //if we are interested in the current thread and this is not it, continue
- if(((DThread*)object) != &Kern::CurrentThread())
- continue;
- break;
- }
- case SCMDataSave::EProcessSpecific :
- {
- //if we are interested in the current proc and this is not it, continue
- if(((DThread*)object)->iOwningProcess != &Kern::CurrentProcess())
- continue;
- break;
- }
- case SCMDataSave::ESystemWide :
- default:
- break;
- }
- }
- else if(aObjectType == EProcess)
- {
- switch(aDumpScope)
- {
- case SCMDataSave::EProcessSpecific :
- {
- if((DProcess*)object != &Kern::CurrentProcess())
- continue;
- break;
- }
- case SCMDataSave::EThreadSpecific : //thread specific process doesnt make sense
- return KErrArgument;
- case SCMDataSave::ESystemWide :
- default:
- break;
- }
- }
-
- //Now we look at the data we have been asked to dump
- if(aDataToDump.iMetaData)
- {
- TUint dumped = 0;
- err = HelpDumpMetaData(object, aObjectType, dumped);
- if(KErrNone != err)
- {
- CLTRACE1("Failed to meta data: [%d]", err);
- return err;
- }
- aSizeDumped += dumped;
- }
-
- if(aDataToDump.iCodeSegs)
- {
- if(aObjectType != EProcess)
- {
- return KErrArgument;
- }
-
- TUint dumped = 0;
- err = iDataSave->LogCodeSegments((DProcess*)object, dumped);
- if(KErrNone != err)
- {
- CLTRACE1("Failed to log code segments: [%d]", err);
- return err;
- }
- aSizeDumped += dumped;
- }
-
- if(aDataToDump.iStk != SCMDataSave::EStackTypeNone)
- {
- TUint dumped = 0;
- err = HelpDumpStacks(object, aObjectType, dumped, aDataToDump.iStk);
- if(KErrNone != err)
- {
- CLTRACE1("Failed to log stacks: [%d]", err);
- return err;
- }
- aSizeDumped += dumped;
- }
-
- if(aDataToDump.iReg != SCMDataSave::ERegSetNone)
- {
- if(aObjectType != EThread)
- {
- return KErrArgument;
- }
- TUint dumped = 0;
- err = iDataSave->LogRegisters((DThread*)object, aDataToDump.iReg, dumped);
- if(KErrNone != err && KErrNotSupported !=err) //we expect to send down a KErrNotSupported when we ask for Full CPU set for the non crashed thread - thats fine
- {
- CLTRACE1("Failed to log registers: [%d]", err);
- return err;
- }
- aSizeDumped += dumped;
- }
- }
-
- return KErrNone;
- }
-
-/**
- * Helper method for dumping stacks. Looks to see what type of stack we want and then calls
- * appropriate method
- * @param aObject The DThread object whose stack we want
- * @param aObjectType The object type of this aObject. Anything other than EThread will give KErrArgument
- * @param aSizeDumped Holds the size of the stack dumped after processing
- * @param aStkType The type of stack to be dumped
- * @see TObjectType
- * @see SCMDataSave::TStackType
- * @return One of the system wide codes
- */
-TInt SCMonitor::HelpDumpStacks(DObject* aObject, TObjectType aObjectType, TUint& aSizeDumped, SCMDataSave::TStackType aStkType) const
- {
- //verify args
- if(aObjectType != EThread)
- {
- return KErrArgument;
- }
-
- switch(aStkType)
- {
- case SCMDataSave::EUsrStack:
- {
- return iDataSave->LogThreadUserStack((DThread*)aObject, ETrue, aSizeDumped);
- }
- case SCMDataSave::ESvrStack:
- {
- return iDataSave->LogThreadSupervisorStack((DThread*)aObject, ETrue, aSizeDumped);
- }
- default: return KErrArgument;
- }
- }
-
-/**
- * Helper method to dump meta data about a DThread or a DProcess object
- * @param aObject DObject to use
- * @param aObjectType Type of DObject. Must be EThread or EProcess
- * @param aSizeDumped Holds the size of the stack dumped after processing
- * @return
- */
-TInt SCMonitor::HelpDumpMetaData(DObject* aObject, TObjectType aObjectType, TUint& aSizeDumped) const
- {
- aSizeDumped = 0;
-
- switch(aObjectType)
- {
- case EThread:
- {
- return iDataSave->LogThreadData((DThread*)aObject, aSizeDumped);
- }
- case EProcess:
- {
- return iDataSave->LogProcessData((DProcess*)aObject, aSizeDumped);
- }
- default: return KErrArgument;
- }
- }
-
-/**
- * Wrapper method around the flash erase block fundtion to determine if the erase was succesful.
- * If the erase was not succesful we can't continue as we cannot write.
- * @param aBlockOffset Block to erase
- * @return One of the OS wide codes
- */
-TInt SCMonitor::EraseFlashBlock(const SCMCrashBlockEntry& aBlock)
- {
- iFlash->StartTransaction();
-
- TInt numAttempts = 0;
- while(numAttempts < KFlashEraseAttempts)
- {
- iFlash->SetWritePos(aBlock.iBlockOffset);
- iFlash->EraseFlashBlock(aBlock.iBlockOffset);
-
- //we will read the flash to make sure that it set the block to all 1's (well not all, just the start)
- TBuf8<sizeof(TUint32)> buf;
- buf.SetLength(sizeof(TUint32));
-
- iFlash->SetReadPos(aBlock.iBlockOffset);
- iFlash->Read(buf);
-
- volatile TUint32* result = (TUint32*)buf.Ptr();
- if(*result == 0xFFFFFFFF)
- {
- __KTRACE_OPT(KALWAYS, Kern::Printf("Erase of block [0x%X] succesful after [%d] attempts", aBlock.iBlockOffset, numAttempts+1))
- iFlash->EndTransaction();
- return KErrNone;
- }
-
- numAttempts++;
-
- //Sometimes a write to the block helps the next erase
- TUint32 bytesWritten = 0;
- while(bytesWritten < aBlock.iBlockSize)
- {
- TBuf8<sizeof(TUint8)> num;
- num.Append(0x0);
- iFlash->Write(num);
- bytesWritten++;
- }
- }
-
- __KTRACE_OPT(KALWAYS, Kern::Printf("After %d attempts, we were unable to erase the flash block at [0x%X]. This could be because "
- "the driver is defective or because the flash has gone past its lifetime. Whatever it is though, "
- "we cannot continue.", KFlashEraseAttempts, aBlock.iBlockOffset));
-
- iFlash->EndTransaction();
- return KErrAbort;
- }
-
-/**
- * This erases each block in the flash partition
- * @return One of the system wide codes
- */
-TInt SCMonitor::EraseEntireFlashPartition()
- {
- if(iMultiCrashInfo)
- {
- iMultiCrashInfo->Reset();
-
- SCMCrashBlockEntry* block = iMultiCrashInfo->GetNextBlock();
- while(block)
- {
- TInt err = EraseFlashBlock(*block);
- if(KErrNone != err)
- {
- return err;
- }
-
- block = iMultiCrashInfo->GetNextBlock();
- }
-
- return KErrNone;
- }
-
- CLTRACE("SCMonitor::EraseEntireFlashPartition() -- No Flash MAP available, trying to use the raw driver to delete.");
- TheSCMonitor.iFlash->EraseLogArea();
-
- return KErrNone;
- }
-
-//eof scmonitor.cpp
-