| /******************************************************************************* |
| * Copyright (c) 2005 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.ui.tests.concurrency; |
| |
| import java.lang.reflect.InvocationTargetException; |
| import junit.framework.*; |
| import org.eclipse.core.resources.*; |
| import org.eclipse.core.runtime.*; |
| import org.eclipse.jface.dialogs.ProgressMonitorDialog; |
| import org.eclipse.jface.operation.IThreadListener; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.swt.widgets.Shell; |
| import org.eclipse.ui.actions.WorkspaceModifyOperation; |
| |
| /** |
| * Tests the following sequence of events: |
| * 1) Lock is acquired in UI thread |
| * 2) Modal context thread is started using IThreadListener |
| * 3) Lock is transferred to modal context thread |
| * 4) Modal context thread performs an asyncExec |
| * 5) The asyncExec tries to acquire the same lock held by the modal context |
| * 6) The modal context thread exits, thus transferring the rule back to the UI thread |
| * <p> |
| * Now the rule has been transferred back to the UI thread, but the UI thread |
| * is in a wait loop waiting to obtain the rule. The UI thread should realize that |
| * it now owns the lock it is waiting for, and continue with its execution. |
| * <p> |
| * See bug 98621 for more details. |
| * @since 3.2 |
| */ |
| public class TestBug98621 extends TestCase { |
| class TransferTestOperation extends WorkspaceModifyOperation implements IThreadListener { |
| public void execute(final IProgressMonitor pm) { |
| Display.getDefault().asyncExec(new Runnable() { |
| public void run() { |
| try { |
| workspace.run(new IWorkspaceRunnable() { |
| public void run(IProgressMonitor mon) { |
| // |
| } |
| }, workspace.getRoot(), IResource.NONE, null); |
| } catch (CoreException ex) { |
| ex.printStackTrace(); |
| } |
| } |
| }); |
| //wait until the asyncExec is blocking the UI thread |
| try { |
| Thread.sleep(1000); |
| } catch (InterruptedException e) { |
| //ignore |
| } |
| } |
| |
| public void threadChange(Thread thread) { |
| Platform.getJobManager().transferRule(workspace.getRoot(), thread); |
| } |
| } |
| |
| private IWorkspace workspace = ResourcesPlugin.getWorkspace(); |
| |
| public TestBug98621() { |
| super(); |
| } |
| |
| public TestBug98621(String name) { |
| super(name); |
| } |
| |
| /** |
| * Performs the test |
| */ |
| public void testBug() throws CoreException { |
| workspace.run(new IWorkspaceRunnable() { |
| public void run(IProgressMonitor monitor) { |
| ProgressMonitorDialog dialog = new ProgressMonitorDialog(new Shell()); |
| try { |
| dialog.run(true, false, new TransferTestOperation()); |
| } catch (InvocationTargetException e) { |
| e.printStackTrace(); |
| fail(e.getMessage()); |
| } catch (InterruptedException e) { |
| //ignore |
| } |
| } |
| }, workspace.getRoot(), IResource.NONE, null); |
| } |
| } |