/*******************************************************************************
* Copyright (c) 2000, 2012 IBM Corporation and others.
* 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdi.internal.event;
import java.io.DataInputStream;
import java.io.IOException;
import java.lang.reflect.Field;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.jdi.internal.MirrorImpl;
import org.eclipse.jdi.internal.ThreadReferenceImpl;
import org.eclipse.jdi.internal.VirtualMachineImpl;
import org.eclipse.jdi.internal.request.RequestID;
import com.sun.jdi.ThreadReference;
import com.sun.jdi.event.Event;
import com.sun.jdi.request.EventRequest;
/**
* This class implements the corresponding interfaces declared by the JDI
* specification. See the com.sun.jdi package for more information.
*
*/
public abstract class EventImpl extends MirrorImpl implements Event {
/** Constants for EventKind. */
public static final byte EVENT_SINGLE_STEP = 1;
public static final byte EVENT_BREAKPOINT = 2;
public static final byte EVENT_FRAME_POP = 3;
public static final byte EVENT_EXCEPTION = 4;
public static final byte EVENT_USER_DEFINED = 5;
public static final byte EVENT_THREAD_START = 6;
public static final byte EVENT_THREAD_END = 7;
public static final byte EVENT_CLASS_PREPARE = 8;
public static final byte EVENT_CLASS_UNLOAD = 9;
public static final byte EVENT_CLASS_LOAD = 10;
public static final byte EVENT_FIELD_ACCESS = 20;
public static final byte EVENT_FIELD_MODIFICATION = 21;
public static final byte EVENT_EXCEPTION_CATCH = 30;
public static final byte EVENT_METHOD_ENTRY = 40;
public static final byte EVENT_METHOD_EXIT = 41;
public static final byte EVENT_METHOD_EXIT_WITH_RETURN_VALUE = 42;
public static final byte EVENT_MONITOR_CONTENDED_ENTER = 43;
public static final byte EVENT_MONITOR_CONTENDED_ENTERED = 44;
public static final byte EVENT_MONITOR_WAIT = 45;
public static final byte EVENT_MONITOR_WAITED = 46;
public static final byte EVENT_VM_INIT = 90;
public static final byte EVENT_VM_DEATH = 99;
public static final byte EVENT_VM_DISCONNECTED = 100; // Never sent by
// across JDWP.
public static final byte EVENT_VM_START = EVENT_VM_INIT;
public static final byte EVENT_THREAD_DEATH = EVENT_THREAD_END;
/** ThreadReference of thread that generated this event. */
protected ThreadReferenceImpl fThreadRef;
/** Mapping of command codes to strings. */
private static HashMap<Integer, String> fEventKindMap = null;
/** Request ID of event. */
private RequestID fRequestID;
/** The EventRequest that requested this event. */
private EventRequest fRequest;
/**
* Creates new EventImpl, only used by subclasses.
*/
protected EventImpl(String description, VirtualMachineImpl vmImpl,
RequestID requestID) {
super(description, vmImpl);
fRequestID = requestID;
}
/**
* @return Returns ThreadReference of thread that generated this event.
*/
public ThreadReference thread() {
return fThreadRef;
}
/**
* @return Returns requestID.
*/
public RequestID requestID() {
return fRequestID;
}
/**
* @return Returns string representation.
*/
@Override
public String toString() {
return super.toString() + ": " + fRequestID; //$NON-NLS-1$
}
/**
* @return Creates, reads and returns new EventImpl.
*/
public static EventImpl read(MirrorImpl target, DataInputStream dataInStream)
throws IOException {
byte eventKind = target.readByte(
"event kind", eventKindMap(), dataInStream); //$NON-NLS-1$
RequestID requestID = RequestID.read(target, dataInStream);
// Create, read and return Event of eventKind.
EventImpl result;
switch (eventKind) {
case 0:
return null;
case AccessWatchpointEventImpl.EVENT_KIND:
result = AccessWatchpointEventImpl.read(target, requestID,
dataInStream);
break;
case BreakpointEventImpl.EVENT_KIND:
result = BreakpointEventImpl.read(target, requestID, dataInStream);
break;
case ClassPrepareEventImpl.EVENT_KIND:
result = ClassPrepareEventImpl
.read(target, requestID, dataInStream);
break;
case ClassUnloadEventImpl.EVENT_KIND:
result = ClassUnloadEventImpl.read(target, requestID, dataInStream);
break;
case ExceptionEventImpl.EVENT_KIND:
result = ExceptionEventImpl.read(target, requestID, dataInStream);
break;
case MethodEntryEventImpl.EVENT_KIND:
result = MethodEntryEventImpl.read(target, requestID, dataInStream);
break;
case MethodExitEventImpl.EVENT_KIND:
result = MethodExitEventImpl.read(target, requestID, dataInStream);
break;
case EVENT_METHOD_EXIT_WITH_RETURN_VALUE:
result = MethodExitEventImpl.readWithReturnValue(target, requestID,
dataInStream);
break;
case MonitorContendedEnteredEventImpl.EVENT_KIND:
result = MonitorContendedEnteredEventImpl.read(target, requestID,
dataInStream);
break;
case MonitorContendedEnterEventImpl.EVENT_KIND:
result = MonitorContendedEnterEventImpl.read(target, requestID,
dataInStream);
break;
case MonitorWaitedEventImpl.EVENT_KIND:
result = MonitorWaitedEventImpl.read(target, requestID,
dataInStream);
break;
case MonitorWaitEventImpl.EVENT_KIND:
result = MonitorWaitEventImpl.read(target, requestID, dataInStream);
break;
case ModificationWatchpointEventImpl.EVENT_KIND:
result = ModificationWatchpointEventImpl.read(target, requestID,
dataInStream);
break;
case StepEventImpl.EVENT_KIND:
result = StepEventImpl.read(target, requestID, dataInStream);
break;
case ThreadDeathEventImpl.EVENT_KIND:
result = ThreadDeathEventImpl.read(target, requestID, dataInStream);
break;
case ThreadStartEventImpl.EVENT_KIND:
result = ThreadStartEventImpl.read(target, requestID, dataInStream);
break;
case VMDeathEventImpl.EVENT_KIND:
result = VMDeathEventImpl.read(target, requestID, dataInStream);
break;
case VMDisconnectEventImpl.EVENT_KIND:
result = VMDisconnectEventImpl
.read(target, requestID, dataInStream);
break;
case VMStartEventImpl.EVENT_KIND:
result = VMStartEventImpl.read(target, requestID, dataInStream);
break;
default:
throw new IOException(
EventMessages.EventImpl_Read_invalid_EventKind___1
+ eventKind);
}
// Find and store original request.
if (!requestID.isNull())
result.fRequest = target.virtualMachineImpl().eventRequestManagerImpl().findRequest(result);
return result;
}
/**
* @return Returns EventRequest that caused this event to be generated by
* the Virtual Machine.
*/
@Override
public EventRequest request() {
return fRequest;
}
/**
* Retrieves constant mappings.
*/
public static void getConstantMaps() {
if (fEventKindMap != null)
return;
java.lang.reflect.Field[] fields = EventImpl.class.getDeclaredFields();
fEventKindMap = new HashMap<>();
for (Field field : fields) {
if ((field.getModifiers() & java.lang.reflect.Modifier.PUBLIC) == 0
|| (field.getModifiers() & java.lang.reflect.Modifier.STATIC) == 0
|| (field.getModifiers() & java.lang.reflect.Modifier.FINAL) == 0)
continue;
try {
String name = field.getName();
Integer intValue = new Integer(field.getInt(null));
if (name.startsWith("EVENT_")) { //$NON-NLS-1$
name = name.substring(6);
fEventKindMap.put(intValue, name);
}
} catch (IllegalAccessException e) {
// Will not occur for own class.
} catch (IllegalArgumentException e) {
// Should not occur.
// We should take care that all public static final constants
// in this class are numbers that are convertible to int.
}
}
}
/**
* @return Returns a map with string representations of tags.
*/
public static Map<Integer, String> eventKindMap() {
getConstantMaps();
return fEventKindMap;
}
}