tests/org.eclipse.ui.tests/Eclipse UI Tests/org/eclipse/ui/tests/concurrency/TestBug138695.java

/*******************************************************************************
 * Copyright (c) 2006 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 junit.framework.*;
import org.eclipse.core.runtime.*;
import org.eclipse.core.runtime.jobs.ISchedulingRule;
import org.eclipse.ui.progress.UIJob;

/**
 * @since 3.2
 *
 */
public class TestBug138695 extends TestCase {
	class SampleJob extends UIJob {

		/**
		 * @param name
		 */
		public SampleJob() {
			super("Sample");
		}

		/* (non-Javadoc)
		 * @see org.eclipse.ui.progress.UIJob#runInUIThread(org.eclipse.core.runtime.IProgressMonitor)
		 */
		public IStatus runInUIThread(IProgressMonitor monitor) {
			try {
				Thread.sleep(100);
			} catch (InterruptedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			return Status.OK_STATUS;
		}

	}

	class SerialPerObjectRule implements ISchedulingRule {

		private Object fObject = null;

		public SerialPerObjectRule(Object lock) {
			fObject = lock;
		}

		/* (non-Javadoc)
		 * @see org.eclipse.core.runtime.jobs.ISchedulingRule#contains(org.eclipse.core.runtime.jobs.ISchedulingRule)
		 */
		public boolean contains(ISchedulingRule rule) {
			return rule == this;
		}

		/* (non-Javadoc)
		 * @see org.eclipse.core.runtime.jobs.ISchedulingRule#isConflicting(org.eclipse.core.runtime.jobs.ISchedulingRule)
		 */
		public boolean isConflicting(ISchedulingRule rule) {
			if (rule instanceof SerialPerObjectRule) {
				SerialPerObjectRule vup = (SerialPerObjectRule) rule;
				return fObject == vup.fObject;
			}
			return false;
		}

	}

	public static Test suite() {
		return new TestSuite(TestBug138695.class);
	}

	public void testManyThreads() {
		for (int i = 0; i < 1000; i++) {
			SampleJob job = new SampleJob();
			job.setRule(new SerialPerObjectRule(this));
			job.schedule();
		}

	}

}