| package org.eclipse.debug.jdi.tests; |
| |
| /********************************************************************** |
| Copyright (c) 2000, 2002 IBM Corp. All rights reserved. |
| This file is made available under the terms of the Common Public License v1.0 |
| which accompanies this distribution, and is available at |
| http://www.eclipse.org/legal/cpl-v10.html |
| **********************************************************************/ |
| |
| import com.sun.jdi.event.AccessWatchpointEvent; |
| import com.sun.jdi.event.BreakpointEvent; |
| import com.sun.jdi.event.ClassPrepareEvent; |
| import com.sun.jdi.event.ClassUnloadEvent; |
| import com.sun.jdi.event.Event; |
| import com.sun.jdi.event.ExceptionEvent; |
| import com.sun.jdi.event.MethodEntryEvent; |
| import com.sun.jdi.event.MethodExitEvent; |
| import com.sun.jdi.event.ModificationWatchpointEvent; |
| import com.sun.jdi.event.StepEvent; |
| import com.sun.jdi.event.ThreadDeathEvent; |
| import com.sun.jdi.event.ThreadStartEvent; |
| import com.sun.jdi.event.VMDeathEvent; |
| import com.sun.jdi.event.VMDisconnectEvent; |
| import com.sun.jdi.request.EventRequest; |
| |
| /** |
| * Listen for a specific kind of event. |
| */ |
| public class EventWaiter implements EventListener { |
| protected EventRequest fRequest; |
| protected boolean fShouldGo; |
| protected Event fEvent; |
| /** |
| * Creates a new EventWaiter for the given request. Sets whether it |
| * should let the VM go after it got the event. |
| */ |
| public EventWaiter(EventRequest request, boolean shouldGo) { |
| fRequest = request; |
| fShouldGo = shouldGo; |
| } |
| public boolean accessWatchpoint(AccessWatchpointEvent event) { |
| return handleEvent(event); |
| } |
| public boolean methodEntry(MethodEntryEvent event) { |
| return handleEvent(event); |
| } |
| public boolean methodExit(MethodExitEvent event) { |
| return handleEvent(event); |
| } |
| public boolean breakpoint(BreakpointEvent event) { |
| return handleEvent(event); |
| } |
| public boolean classPrepare(ClassPrepareEvent event) { |
| return handleEvent(event); |
| } |
| public boolean classUnload(ClassUnloadEvent event) { |
| return handleEvent(event); |
| } |
| public boolean exception(ExceptionEvent event) { |
| return handleEvent(event); |
| } |
| /** |
| * Handles an incoming event. |
| * Returns whether the VM should be resumed if it was suspended. |
| */ |
| protected boolean handleEvent(Event event) { |
| if ((event.request() != null) && (event.request().equals(fRequest))) { |
| notifyEvent(event); |
| return fShouldGo; |
| } else |
| return true; |
| } |
| public boolean modificationWatchpoint(ModificationWatchpointEvent event) { |
| return handleEvent(event); |
| } |
| /** |
| * Notify any object that is waiting for an event. |
| */ |
| synchronized protected void notifyEvent(Event event) { |
| notify(); |
| fEvent = event; |
| } |
| public boolean step(StepEvent event) { |
| return handleEvent(event); |
| } |
| public boolean threadDeath(ThreadDeathEvent event) { |
| return handleEvent(event); |
| } |
| public boolean threadStart(ThreadStartEvent event) { |
| return handleEvent(event); |
| } |
| public boolean vmDeath(VMDeathEvent event) { |
| if (fEvent == null) { |
| // This is the last event we can ever get an this was not the one we expected |
| notifyEvent(null); |
| return true; |
| } |
| return handleEvent(event); |
| } |
| public boolean vmDisconnect(VMDisconnectEvent event) { |
| return handleEvent(event); |
| } |
| /** |
| * Waits for the first event corresponding to this waiter's request. |
| */ |
| synchronized public Event waitEvent() throws InterruptedException { |
| if (fEvent == null) // If event didn't already come in |
| wait(); |
| Event result = fEvent; |
| fEvent = null; |
| return result; |
| } |
| /** |
| * Waits for the first event corresponding to this waiter's request |
| * for the given time (in ms). If it times out, return null. |
| */ |
| synchronized public Event waitEvent(long time) |
| throws InterruptedException { |
| if (fEvent == null) // If event didn't already come in |
| wait(time); |
| Event result = fEvent; |
| fEvent = null; |
| return result; |
| } |
| } |