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/*
* Copyright (c) 2012, 2013 Eike Stepper (Berlin, Germany) 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:
* Eike Stepper - initial API and implementation
*/
package org.eclipse.emf.cdo.tests.bugzilla;
import org.eclipse.emf.cdo.eresource.CDOResource;
import org.eclipse.emf.cdo.session.CDOSession;
import org.eclipse.emf.cdo.tests.AbstractCDOTest;
import org.eclipse.emf.cdo.tests.model1.Category;
import org.eclipse.emf.cdo.transaction.CDOTransaction;
import org.eclipse.emf.cdo.util.CommitException;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
/**
* Bug 390185.
*
* @author Eike Stepper
*/
public class Bugzilla_390185_Test extends AbstractCDOTest
{
private static final int THREADS = 5;
private static final int TRANSACTIONS_PER_THREAD = 100;
public void testIvalidationDeadlock() throws Exception
{
CDOSession session = openSession();
CountDownLatch latch = new CountDownLatch(THREADS);
List<Actor> actors = new ArrayList<Actor>(THREADS);
for (int i = 0; i < THREADS; i++)
{
Actor actor = new Actor(session, latch, i);
actors.add(actor);
}
if (!latch.await(DEFAULT_TIMEOUT, TimeUnit.MILLISECONDS))
{
throw new TimeoutException();
}
}
/**
* @author Eike Stepper
*/
private class Actor extends Thread
{
private CDOSession session;
private CountDownLatch latch;
private int nr;
public Actor(CDOSession session, CountDownLatch latch, int nr)
{
super("Actor-" + nr);
this.session = session;
this.latch = latch;
this.nr = nr;
start();
}
@Override
public void run()
{
for (int i = 0; i < TRANSACTIONS_PER_THREAD; i++)
{
CDOTransaction transaction = session.openTransaction();
attemptCommit(transaction);
transaction.close();
}
latch.countDown();
}
private void attemptCommit(CDOTransaction transaction)
{
for (;;)
{
Category category = getModel1Factory().createCategory();
category.setName("category-" + System.currentTimeMillis());
try
{
synchronized (transaction)
{
CDOResource res = transaction.getOrCreateResource(getResourcePath("/res-" + nr));
res.getContents().add(category);
transaction.commit();
break;
}
}
catch (CommitException ex)
{
transaction.rollback();
}
catch (Exception ex)
{
ex.printStackTrace();
break;
}
}
transaction.close();
}
}
}
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