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/*******************************************************************************
* Copyright (c) 2009 Ericsson
*
* All rights reserved. This program and the accompanying materials are
* made available under the terms of the Eclipse Public License v1.0 which
* accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Alvaro Sanchez-Leon (alvsan09@gmail.com) - Initial API and implementation
* Michel Dagenais (michel.dagenais@polymtl.ca) - Reference C implementation, used with permission
*******************************************************************************/
package org.eclipse.linuxtools.lttng.ui.views.resources.evProcessor;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.linuxtools.lttng.core.event.LttngEvent;
import org.eclipse.linuxtools.lttng.core.event.LttngSyntheticEvent;
import org.eclipse.linuxtools.lttng.core.event.LttngSyntheticEvent.SequenceInd;
import org.eclipse.linuxtools.lttng.core.state.StateStrings;
import org.eclipse.linuxtools.lttng.core.state.evProcessor.AbsEventToHandlerResolver;
import org.eclipse.linuxtools.lttng.core.state.evProcessor.ILttngEventProcessor;
import org.eclipse.linuxtools.lttng.core.state.model.LttngTraceState;
/**
* Builds a Map from string event name to a processing handler object, the
* processors implement the same interface to facilitate transparent methods
* call,
*
* The map key String is the entry point of the raw events. Using a hash speeds
* up the resolution of the appropriate processor
*
* @author alvaro
*
*/
public class ResourcesEventToHandlerFactory extends AbsEventToHandlerResolver {
// ========================================================================
// Data
// =======================================================================
private final Map<String, ILttngEventProcessor> eventNametoBeforeProcessor = new HashMap<String, ILttngEventProcessor>();
private final Map<String, ILttngEventProcessor> eventNametoAfterProcessor = new HashMap<String, ILttngEventProcessor>();
private ResourcesFinishUpdateHandler finishProcessor = null;
private static ResourcesEventToHandlerFactory instance = null;
private ResourcesBeforeUpdateHandlers instantiateBeforeHandler = new ResourcesBeforeUpdateHandlers();
private ResourcesAfterUpdateHandlers instantiateAfterHandler = new ResourcesAfterUpdateHandlers();
private ResourcesEventToHandlerFactory() {
super();
// Create one instance of each individual event handler and add the
// instance to the map
// *** BEFORE HOOKS ***
eventNametoBeforeProcessor.put(
StateStrings.Events.LTT_EVENT_SCHED_SCHEDULE.getInName(),
instantiateBeforeHandler.getBeforeSchedChangeHandler());
eventNametoBeforeProcessor.put(StateStrings.Events.LTT_EVENT_TRAP_ENTRY
.getInName(), instantiateBeforeHandler
.getBeforeExecutionModeTrap());
eventNametoBeforeProcessor.put(StateStrings.Events.LTT_EVENT_TRAP_EXIT
.getInName(), instantiateBeforeHandler
.getBeforeExecutionModeTrap());
eventNametoBeforeProcessor.put(
StateStrings.Events.LTT_EVENT_PAGE_FAULT_ENTRY.getInName(),
instantiateBeforeHandler.getBeforeExecutionModeTrap());
eventNametoBeforeProcessor.put(
StateStrings.Events.LTT_EVENT_PAGE_FAULT_EXIT.getInName(),
instantiateBeforeHandler.getBeforeExecutionModeTrap());
eventNametoBeforeProcessor.put(
StateStrings.Events.LTT_EVENT_PAGE_FAULT_NOSEM_ENTRY
.getInName(), instantiateBeforeHandler
.getBeforeExecutionModeTrap());
eventNametoBeforeProcessor
.put(StateStrings.Events.LTT_EVENT_PAGE_FAULT_NOSEM_EXIT
.getInName(), instantiateBeforeHandler
.getBeforeExecutionModeTrap());
eventNametoBeforeProcessor.put(StateStrings.Events.LTT_EVENT_IRQ_ENTRY
.getInName(), instantiateBeforeHandler
.getBeforeExecutionModeIrq());
eventNametoBeforeProcessor.put(StateStrings.Events.LTT_EVENT_IRQ_EXIT
.getInName(), instantiateBeforeHandler
.getBeforeExecutionModeIrq());
eventNametoBeforeProcessor.put(
StateStrings.Events.LTT_EVENT_SOFT_IRQ_RAISE.getInName(),
instantiateBeforeHandler.getBeforeExecutionModeSoftIrq());
eventNametoBeforeProcessor.put(
StateStrings.Events.LTT_EVENT_SOFT_IRQ_ENTRY.getInName(),
instantiateBeforeHandler.getBeforeExecutionModeSoftIrq());
eventNametoBeforeProcessor.put(
StateStrings.Events.LTT_EVENT_SOFT_IRQ_EXIT.getInName(),
instantiateBeforeHandler.getBeforeExecutionModeSoftIrq());
eventNametoBeforeProcessor.put(
StateStrings.Events.LTT_EVENT_REQUEST_ISSUE.getInName(),
instantiateBeforeHandler.getBeforeBdevEvent());
eventNametoBeforeProcessor.put(
StateStrings.Events.LTT_EVENT_REQUEST_COMPLETE.getInName(),
instantiateBeforeHandler.getBeforeBdevEvent());
// *** AFTER HOOKS ***
eventNametoAfterProcessor.put(
StateStrings.Events.LTT_EVENT_SCHED_SCHEDULE.getInName(),
instantiateAfterHandler.getAfterSchedChangeHandler());
finishProcessor = new ResourcesFinishUpdateHandler();
}
/**
*
*/
public static AbsEventToHandlerResolver getInstance() {
if (instance == null) {
instance = new ResourcesEventToHandlerFactory();
}
return instance;
}
@Override
public ILttngEventProcessor getAfterProcessor(String eventType) {
return eventNametoAfterProcessor.get(eventType);
}
@Override
public ILttngEventProcessor getBeforeProcessor(String eventType) {
return eventNametoBeforeProcessor.get(eventType);
}
@Override
public ILttngEventProcessor getfinishProcessor() {
return finishProcessor;
}
@Override
public boolean process(LttngEvent trcEvent, LttngTraceState traceSt) {
if (trcEvent instanceof LttngSyntheticEvent) {
LttngSyntheticEvent synEvent = (LttngSyntheticEvent) trcEvent;
String eventType = synEvent.getMarkerName();
ILttngEventProcessor processor = null;
if (synEvent.getSynType() == SequenceInd.BEFORE) {
processor = getBeforeProcessor(eventType);
}
if (synEvent.getSynType() == SequenceInd.AFTER) {
processor = getAfterProcessor(eventType);
}
if (synEvent.getSynType() == SequenceInd.ENDREQ) {
processor = getfinishProcessor();
}
if (processor != null) {
processor.process(trcEvent, traceSt);
}
}
return false;
}
@Override
public ILttngEventProcessor getStateUpdaterProcessor(String eventType) {
return null;
}
}
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