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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: Definitions for the class DAnalyzeToolEventHandler.
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*
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*/
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// INCLUDE FILES
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#include "analyzetooleventhandler.h"
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#include <kernel/kern_priv.h>
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// CONSTANTS
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// The handler mutex literal
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_LIT( KHandlerMutexName, "AnalyzeToolHandlerMutex" );
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// The handle data mutex literal
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_LIT( KDataMutexName, "AnalyzeToolDataMutex" );
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// ================= MEMBER FUNCTIONS =========================================
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// -----------------------------------------------------------------------------
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// DAnalyzeToolEventHandler::Create()
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// C++ default constructor.
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// -----------------------------------------------------------------------------
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//
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TInt DAnalyzeToolEventHandler::Create( DLogicalDevice* aDevice,
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const TUint aProcessId )
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{
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LOGSTR1( "ATDD DAnalyzeToolEventHandler::Create()" );
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TInt ret( KErrNone );
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// Store owner process ID
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iProcessId = aProcessId;
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LOGSTR2( "ATDD DAnalyzeToolEventHandler::Create > iProcessId %d",
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iProcessId );
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// Open the device
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ret = aDevice->Open();
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if ( ret != KErrNone )
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return ret;
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iDevice = aDevice;
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// Create mutex for the handler
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ret = Kern::MutexCreate( iHandlerMutex, KHandlerMutexName, KMutexOrdDebug );
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if ( ret != KErrNone )
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return ret;
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// Create mutex for the data
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ret = Kern::MutexCreate( iDataMutex, KDataMutexName, KMutexOrdDebug-1 );
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if ( ret != KErrNone )
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return ret;
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// Add handler to the handler queue
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return Add();
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}
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// -----------------------------------------------------------------------------
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// DAnalyzeToolEventHandler::~DAnalyzeToolEventHandler()
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// C++ default constructor.
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// -----------------------------------------------------------------------------
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//
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DAnalyzeToolEventHandler::~DAnalyzeToolEventHandler()
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{
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LOGSTR1( "ATDD DAnalyzeToolEventHandler::~DAnalyzeToolEventHandler()" );
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CancelInformLibraryEvent();
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// Close the data mutex
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if ( iDataMutex )
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{
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iDataMutex->Close( NULL );
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}
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// Close the handler mutex
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if ( iHandlerMutex )
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{
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iHandlerMutex->Close( NULL );
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}
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// Close the device mutex
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if ( iDevice )
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{
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iDevice->Close( NULL );
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}
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}
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// -----------------------------------------------------------------------------
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// DAnalyzeToolEventHandler::EventHandler()
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// Function for receiving kernel events
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// -----------------------------------------------------------------------------
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//
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TUint DAnalyzeToolEventHandler::EventHandler( TKernelEvent aEvent,
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TAny* a1, TAny* a2, TAny* aThis )
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{
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// Clarify the event type
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switch ( aEvent)
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{
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case EEventRemoveLibrary:
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{
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LOGSTR1( "ATDD DAnalyzeToolEventHandler::EventHandler() - EEventRemoveLibrary" );
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// Cast the pointer to the handler
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DAnalyzeToolEventHandler* handler =
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( ( DAnalyzeToolEventHandler* ) aThis );
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// Create variable for library information
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TLibraryEventInfo info;
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// Set as library remove event
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info.iEventType = TLibraryEventInfo::ELibraryRemoved;
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// Handle the event
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handler->HandleLibraryEvent( ( DLibrary* ) a1, ( DThread* ) a2, info );
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break;
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}
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case EEventAddLibrary:
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{
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LOGSTR1( "ATDD DAnalyzeToolEventHandler::EventHandler() - EEventAddLibrary" );
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// Cast the pointer to the handler
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DAnalyzeToolEventHandler* handler =
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( ( DAnalyzeToolEventHandler* ) aThis );
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// Create variable for library information
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TLibraryEventInfo info;
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// Set as library remove event
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info.iEventType = TLibraryEventInfo::ELibraryAdded;
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// Handle the event
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handler->HandleLibraryEvent( ( DLibrary* ) a1, ( DThread* ) a2, info );
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break;
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}
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case EEventHwExc:
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{
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LOGSTR1( "ATDD DAnalyzeToolEventHandler::EventHandler() - EEventHwExc" );
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break;
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}
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case EEventSwExc:
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{
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LOGSTR1( "ATDD DAnalyzeToolEventHandler::EventHandler() - EEventSwExc" );
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break;
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}
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case EEventRemoveThread:
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{
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LOGSTR1( "ATDD DAnalyzeToolEventHandler::EventHandler() - EEventRemoveThread" );
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break;
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}
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case EEventKillThread:
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{
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LOGSTR1( "ATDD DAnalyzeToolEventHandler::EventHandler() - EEventKillThread" );
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// Cast the pointer to the handler
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DAnalyzeToolEventHandler* handler =
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( ( DAnalyzeToolEventHandler* ) aThis );
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// Create variable for library information
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TLibraryEventInfo info;
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// Set as kill thread event
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info.iEventType = TLibraryEventInfo::EKillThread;
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// Handle the event
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handler->HandleKillThreadEvent( ( DThread* ) a1, info );
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break;
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}
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default:
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{
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}
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break;
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}
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return ERunNext;
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}
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// -----------------------------------------------------------------------------
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// DAnalyzeToolEventHandler::HandleLibraryEvent()
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// Handles the EEventAddLibrary and EEventRemoveLibrary events.
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// -----------------------------------------------------------------------------
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//
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void DAnalyzeToolEventHandler::HandleLibraryEvent( DLibrary* aLib,
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DThread* aThread, TLibraryEventInfo& aInfo )
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{
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LOGSTR1( "ATDD DAnalyzeToolEventHandler::HandleLibraryEvent()" );
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// Aqcuire the handler mutex
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Kern::MutexWait( *iHandlerMutex );
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// Aqcuire the data mutex
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Kern::MutexWait( *iDataMutex );
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TBool addInfo( EFalse );
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// Check the library event type
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if ( aInfo.iEventType == TLibraryEventInfo::ELibraryAdded )
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{
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if ( aThread != NULL )
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{
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if ( iProcessId == aThread->iOwningProcess->iId )
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{
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LOGSTR1( "ATDD > Process id match" );
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aInfo.iProcessId = aThread->iOwningProcess->iId;
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addInfo = ETrue;
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}
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}
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}
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else if ( aInfo.iEventType == TLibraryEventInfo::ELibraryRemoved )
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{
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if ( aThread != NULL )
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{
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aInfo.iProcessId = aThread->iOwningProcess->iId;
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}
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else
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{
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aInfo.iProcessId = 0;
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}
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addInfo = ETrue;
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}
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if ( addInfo )
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{
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// Store lib info
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aLib->AppendName( aInfo.iLibraryName );//lint !e64 !e1514
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aInfo.iSize = aLib->iCodeSeg->iSize;
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aInfo.iRunAddress = aLib->iCodeSeg->iRunAddress;
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// Store library event info to the array
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iEventArray.Append( aInfo );
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LOGSTR2( "ATDD > iEventArray.Count() = %d", iEventArray.Count() );
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// if client has subscribed the event it is queued
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if ( iClientThread != NULL )
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{
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iEventDfc.Enque();
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}
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}
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// Release the data mutex
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Kern::MutexSignal( *iDataMutex );
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// Release the handler mutex
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Kern::MutexSignal( *iHandlerMutex );
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}
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// -----------------------------------------------------------------------------
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// DAnalyzeToolEventHandler::InformLibraryEvent()
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// Subscribes library event.
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// -----------------------------------------------------------------------------
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//
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void DAnalyzeToolEventHandler::InformLibraryEvent( TRequestStatus* aStatus,
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TAny* aLibraryInfo,
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TThreadMessage& aMessage )
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{
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LOGSTR1( "ATDD DAnalyzeToolEventHandler::InformLibraryEvent()" );
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// Aqcuire the data mutex
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Kern::MutexWait( *iDataMutex );
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// Check if request from client which is already pending
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DThread* current = aMessage.Client();
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LOGSTR2( "ATDD > Current Thread ID = %d", current->iId );
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// Ensure that client doesn't subscribe service when there is a pending
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// subscription
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if ( NULL != iClientThread )
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{
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aMessage.PanicClient( KClientPanic, EPanicRequestPending );
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}
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else
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{
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// Store the client variable pointers
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iClientThread = current;
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iClientRequestStatus = aStatus;
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iClientInfo = aLibraryInfo;
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}
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// Release the data mutex
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Kern::MutexSignal( *iDataMutex );
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// Queue the event since now the client has subscribed it
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iEventDfc.Enque();
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}
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// -----------------------------------------------------------------------------
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// DAnalyzeToolEventHandler::CancelInformLibraryEvent
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// Cancels subscription of the library event.
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// -----------------------------------------------------------------------------
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//
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void DAnalyzeToolEventHandler::CancelInformLibraryEvent()
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{
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LOGSTR1( "ATDD DAnalyzeToolEventHandler::CancelInformLibraryEvent()" );
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iEventDfc.Cancel();
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// Aqcuire the data mutex
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Kern::MutexWait( *iDataMutex );
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if ( NULL != iClientThread && iEventArray.Count() > 0 )
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{
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// Signal the request as complete
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Kern::RequestComplete( iClientThread,
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iClientRequestStatus,
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KErrCancel );
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iClientThread = NULL;
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iClientRequestStatus = NULL;
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iClientInfo = NULL;
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// Reset the event array
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iEventArray.Reset();
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}
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// Release the data mutex
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Kern::MutexSignal( *iDataMutex );
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}
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// -----------------------------------------------------------------------------
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// DAnalyzeToolEventHandler::HandleKillThreadEvent()
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// Handles the EEventKillThread events.
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// -----------------------------------------------------------------------------
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//
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void DAnalyzeToolEventHandler::HandleKillThreadEvent( DThread* aThread,
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TLibraryEventInfo& aInfo )
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{
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LOGSTR1( "ATDD DAnalyzeToolEventHandler::HandleKillThreadEvent()" );
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// Aqcuire the handler mutex
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Kern::MutexWait( *iHandlerMutex );
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// Aqcuire the data mutex
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Kern::MutexWait( *iDataMutex );
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if ( aThread )
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{
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aInfo.iProcessId = aThread->iOwningProcess->iId;
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TBool alone( aThread->iOwningProcess->iThreadQ.First()->Alone() );
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LOGSTR2( "ATDD > Is alone = %d", alone );
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// Check if this our process and is the only thread item.
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if ( aInfo.iProcessId == iProcessId && !alone )
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{
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// Set current Thread id
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LOGSTR2( "ATDD > Thread ID = %d", aThread->iId );
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aInfo.iThreadId = aThread->iId;
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// Append event to array (beginning of the array)
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iEventArray.Insert( aInfo, 0 );
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// if client has subscribed the event it is queued
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if ( iClientThread != NULL )
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{
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iEventDfc.Enque();
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}
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}
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}
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// Release the data mutex
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Kern::MutexSignal( *iDataMutex );
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// Release the handler mutex
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Kern::MutexSignal( *iHandlerMutex );
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}
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// -----------------------------------------------------------------------------
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// DAnalyzeToolEventHandler::DoEventComplete()
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// Informs client about the occured event.
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// -----------------------------------------------------------------------------
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//
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void DAnalyzeToolEventHandler::DoEventComplete()
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{
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LOGSTR1( "ATDD DAnalyzeToolEventHandler::DoEventComplete()" );
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// Aqcuire the handler mutex
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Kern::MutexWait( *iHandlerMutex );
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// Aqcuire the data mutex
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Kern::MutexWait( *iDataMutex );
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if ( NULL != iClientThread && iEventArray.Count() > 0 )
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{
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TInt ret = Kern::ThreadRawWrite( iClientThread,
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iClientInfo,
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&iEventArray[0],
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sizeof( iEventArray[0] ) );
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LOGSTR2( "ATDD > ThreadRawWrite err = %d", ret );
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// Signal the request as complete
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Kern::RequestComplete( iClientThread,
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iClientRequestStatus,
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ret );
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// Remove first item to array
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iEventArray.Remove( 0 );
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// Compresses the array down to a minimum
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iEventArray.Compress();
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// Ensure that pointers are set to NULL
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iClientThread = NULL;
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iClientRequestStatus = NULL;
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iClientInfo = NULL;
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LOGSTR2( "ATDD > iEventArray = %d", iEventArray.Count() );
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}
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// Release the data mutex
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Kern::MutexSignal( *iDataMutex );
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// Release the handler mutex
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Kern::MutexSignal( *iHandlerMutex );
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}
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// -----------------------------------------------------------------------------
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// DAnalyzeToolEventHandler::EventDfc()
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// Static function for DFC events.
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// -----------------------------------------------------------------------------
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//
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void DAnalyzeToolEventHandler::EventDfc(TAny* aPtr)
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{
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LOGSTR1( "ATDD DAnalyzeToolEventHandler::EventDfc()" );
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( (DAnalyzeToolEventHandler*) aPtr )->DoEventComplete();
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}
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// End of File
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