/*
* TeleStax, Open Source Cloud Communications Copyright 2012.
* and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.mobicents.protocols.ss7.tcapAnsi.concurrent;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import junit.framework.Assert;
/**
*
* @author jaime casero
*
*/
public class ConcurrentTestUtil {
public static final List<Throwable> exceptions = Collections.synchronizedList(new ArrayList<Throwable>());
public static void assertConcurrent(final String message, final List<Runnable> runnables, final int maxTimeout) throws InterruptedException {
exceptions.clear();
final int numThreads = runnables.size();
final ExecutorService threadPool = Executors.newFixedThreadPool(numThreads);
try {
final CountDownLatch allExecutorThreadsReady = new CountDownLatch(numThreads);
final CountDownLatch afterInitBlocker = new CountDownLatch(1);
final CountDownLatch allDone = new CountDownLatch(numThreads);
for (final Runnable submittedTestRunnable : runnables) {
threadPool.submit(new Runnable() {
public void run() {
allExecutorThreadsReady.countDown();
try {
afterInitBlocker.await();
submittedTestRunnable.run();
} catch (final Throwable e) {
exceptions.add(e);
e.printStackTrace();
} finally {
allDone.countDown();
}
}
});
}
// wait until all threads are ready
Assert.assertTrue(
"Timeout initializing threads! Perform long lasting initializations before passing runnables to assertConcurrent",
allExecutorThreadsReady.await(runnables.size() * 10, TimeUnit.MILLISECONDS));
// start all test runners
afterInitBlocker.countDown();
Assert.assertTrue(message + " timeout! More than" + maxTimeout + " millis",
allDone.await(maxTimeout, TimeUnit.MILLISECONDS));
} finally {
threadPool.shutdownNow();
}
Assert.assertTrue(message + "failed with exception(s)" + exceptions, exceptions.isEmpty());
}
}