| /******************************************************************************* |
| * Copyright (c) 2000, 2015 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.debug.jdi.tests; |
| |
| 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. |
| * @param request |
| * @param shouldGo |
| */ |
| public EventWaiter(EventRequest request, boolean shouldGo) { |
| fRequest = request; |
| fShouldGo = shouldGo; |
| } |
| /** |
| * @see org.eclipse.debug.jdi.tests.EventListener#accessWatchpoint(com.sun.jdi.event.AccessWatchpointEvent) |
| */ |
| @Override |
| public boolean accessWatchpoint(AccessWatchpointEvent event) { |
| return handleEvent(event); |
| } |
| /** |
| * @see org.eclipse.debug.jdi.tests.EventListener#methodEntry(com.sun.jdi.event.MethodEntryEvent) |
| */ |
| @Override |
| public boolean methodEntry(MethodEntryEvent event) { |
| return handleEvent(event); |
| } |
| /** |
| * @see org.eclipse.debug.jdi.tests.EventListener#methodExit(com.sun.jdi.event.MethodExitEvent) |
| */ |
| @Override |
| public boolean methodExit(MethodExitEvent event) { |
| return handleEvent(event); |
| } |
| /** |
| * @see org.eclipse.debug.jdi.tests.EventListener#breakpoint(com.sun.jdi.event.BreakpointEvent) |
| */ |
| @Override |
| public boolean breakpoint(BreakpointEvent event) { |
| return handleEvent(event); |
| } |
| /** |
| * @see org.eclipse.debug.jdi.tests.EventListener#classPrepare(com.sun.jdi.event.ClassPrepareEvent) |
| */ |
| @Override |
| public boolean classPrepare(ClassPrepareEvent event) { |
| return handleEvent(event); |
| } |
| /** |
| * @see org.eclipse.debug.jdi.tests.EventListener#classUnload(com.sun.jdi.event.ClassUnloadEvent) |
| */ |
| @Override |
| public boolean classUnload(ClassUnloadEvent event) { |
| return handleEvent(event); |
| } |
| /** |
| * @see org.eclipse.debug.jdi.tests.EventListener#exception(com.sun.jdi.event.ExceptionEvent) |
| */ |
| @Override |
| 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; |
| } |
| return true; |
| } |
| /** |
| * @see org.eclipse.debug.jdi.tests.EventListener#modificationWatchpoint(com.sun.jdi.event.ModificationWatchpointEvent) |
| */ |
| @Override |
| 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; |
| } |
| /** |
| * @see org.eclipse.debug.jdi.tests.EventListener#step(com.sun.jdi.event.StepEvent) |
| */ |
| @Override |
| public boolean step(StepEvent event) { |
| return handleEvent(event); |
| } |
| /** |
| * @see org.eclipse.debug.jdi.tests.EventListener#threadDeath(com.sun.jdi.event.ThreadDeathEvent) |
| */ |
| @Override |
| public boolean threadDeath(ThreadDeathEvent event) { |
| return handleEvent(event); |
| } |
| /** |
| * @see org.eclipse.debug.jdi.tests.EventListener#threadStart(com.sun.jdi.event.ThreadStartEvent) |
| */ |
| @Override |
| public boolean threadStart(ThreadStartEvent event) { |
| return handleEvent(event); |
| } |
| /** |
| * @see org.eclipse.debug.jdi.tests.EventListener#vmDeath(com.sun.jdi.event.VMDeathEvent) |
| */ |
| @Override |
| 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); |
| } |
| /** |
| * @see org.eclipse.debug.jdi.tests.EventListener#vmDisconnect(com.sun.jdi.event.VMDisconnectEvent) |
| */ |
| @Override |
| public boolean vmDisconnect(VMDisconnectEvent event) { |
| return handleEvent(event); |
| } |
| /** |
| * Waits for the first event corresponding to this waiter's request. |
| * @return if the vm should be restarted |
| * @throws InterruptedException |
| */ |
| synchronized public Event waitEvent() throws InterruptedException { |
| if (fEvent == null) { |
| 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. |
| * @param time |
| * @return if the vm should be restarted or not |
| * @throws InterruptedException |
| */ |
| synchronized public Event waitEvent(long time) |
| throws InterruptedException { |
| if (fEvent == null) { |
| wait(time); |
| } |
| Event result = fEvent; |
| fEvent = null; |
| return result; |
| } |
| } |