| /******************************************************************************* |
| * 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) Workspace operation starts in the UI thread. Workspace lock is taken, and a modal context thread is forked (call this modal context MC1). |
| * 2) Operation transfers the workspace lock to MC1 using IJobManager.transferRule |
| * 3) Operation runs in MC1, scheduling an asyncExec. |
| * 4) MC1 passes the scheduling rule back to UI thread, and exits |
| * 5) After passing the rule back to the UI thread, but before MC1 dies, the asyncExec is run. |
| * 6) The asyncExec forks another model context (MC2), and blocks the UI thread in another event loop. |
| * 7) MC2 tries to acquire the workspace lock and deadlocks, because at this point it has been transferred to the UI thread |
| * |
| * NOTE: This bug has not yet been fixed. This test illustrates the problem, but must |
| * not be added to the parent test suite until the problem has been fixed. |
| */ |
| public class TestBug105491 extends TestCase { |
| class TransferTestOperation extends WorkspaceModifyOperation implements IThreadListener { |
| public void execute(final IProgressMonitor pm) { |
| //clients assume this would not deadlock because it runs in an asyncExec |
| Display.getDefault().asyncExec(new Runnable() { |
| public void run() { |
| ProgressMonitorDialog dialog = new ProgressMonitorDialog(new Shell()); |
| try { |
| dialog.run(true, false, new WorkspaceModifyOperation() { |
| protected void execute(IProgressMonitor monitor) {} |
| }); |
| } catch (InvocationTargetException e) { |
| e.printStackTrace(); |
| fail(e.getMessage()); |
| } catch (InterruptedException e) { |
| //ignore |
| } |
| } |
| }); |
| } |
| |
| public void threadChange(Thread thread) { |
| Platform.getJobManager().transferRule(workspace.getRoot(), thread); |
| } |
| } |
| |
| private IWorkspace workspace = ResourcesPlugin.getWorkspace(); |
| |
| public TestBug105491() { |
| super(); |
| } |
| |
| public TestBug105491(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); |
| } |
| } |