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AMQ-3754: Updated org.apache.activemq.transport.vm.VmTransportNetworkBrokerTest 

git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@1296194 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Torsten Mielke 2012-03-02 13:20:14 +00:00
parent 783ba853aa
commit 14110f52eb
1 changed files with 67 additions and 5 deletions
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72
activemq-core/src/test/java/org/apache/activemq/transport/vm/VmTransportNetworkBrokerTest.java
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@ -17,6 +17,9 @@
package org.apache.activemq.transport.vm;
import java.net.URI;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
@ -29,9 +32,14 @@ import org.apache.activemq.bugs.embedded.ThreadExplorer;
import org.apache.activemq.network.NetworkConnector;
import org.apache.activemq.thread.DefaultThreadPools;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class VmTransportNetworkBrokerTest extends TestCase {
private static final Logger LOG = LoggerFactory.getLogger(VmTransportNetworkBrokerTest.class);
private static final String VM_BROKER_URI =
"vm://localhost?create=false";
@ -42,6 +50,8 @@ public class VmTransportNetworkBrokerTest extends TestCase {
// with VMConnection and simple discovery network connector
int originalThreadCount = Thread.activeCount();
LOG.debug(ThreadExplorer.show("threads at beginning"));
BrokerService broker = new BrokerService();
broker.setDedicatedTaskRunner(true);
broker.setPersistent(false);
@ -69,7 +79,6 @@ public class VmTransportNetworkBrokerTest extends TestCase {
broker.waitUntilStopped();
// testNoDanglingThreadsAfterStop with tcp transport
broker = new BrokerService();
broker.setSchedulerSupport(true);
broker.setDedicatedTaskRunner(true);
@ -89,10 +98,63 @@ public class VmTransportNetworkBrokerTest extends TestCase {
// let it settle
TimeUnit.SECONDS.sleep(5);
int threadCountAfterStop = Thread.activeCount();
assertTrue("Threads are leaking: " + ThreadExplorer.show("active after stop") + ". originalThreadCount=" + originalThreadCount + " threadCountAfterStop=" + threadCountAfterStop,
threadCountAfterStop == originalThreadCount);
// get final threads but filter out any daemon threads that the JVM may have created.
Thread[] threads = filterDaemonThreads(ThreadExplorer.listThreads());
int threadCountAfterStop = threads.length;
if (LOG.isDebugEnabled()) {
LOG.debug(ThreadExplorer.show("active after stop"));
LOG.debug("originalThreadCount=" + originalThreadCount + " threadCountAfterStop=" + threadCountAfterStop);
}
assertTrue("Threads are leaking: " +
ThreadExplorer.show("active after stop") +
". originalThreadCount=" +
originalThreadCount +
" threadCountAfterStop=" +
threadCountAfterStop,
threadCountAfterStop == originalThreadCount);
}
/**
* Filters any daemon threads from the thread list.
*
* Thread counts before and after the test should ideally be equal.
* However there is no guarantee that the JVM does not create any
* additional threads itself.
* E.g. on Mac OSX there is a JVM internal thread called
* "Poller SunPKCS11-Darwin" created after the test go started and
* under the main thread group.
* When debugging tests in Eclipse another so called "Reader" thread
* is created by Eclipse.
* So we cannot assume that the JVM does not create additional threads
* during the test. However for the time being we assume that any such
* additionally created threads are daemon threads.
*
* @param threads - the array of threads to parse
* @return a new array with any daemon threads removed
*/
public Thread[] filterDaemonThreads(Thread[] threads) throws Exception {
List<Thread> threadList = new ArrayList<Thread>(Arrays.asList(threads));
// Can't use an Iterator as it would raise a
// ConcurrentModificationException when trying to remove an element
// from the list, so using standard walk through
for (int i = 0 ; i < threadList.size(); i++) {
Thread thread = threadList.get(i);
LOG.debug("Inspecting thread " + thread.getName());
if (thread.isDaemon()) {
LOG.debug("Removing deamon thread.");
threadList.remove(thread);
Thread.sleep(100);
}
}
LOG.debug("Converting list back to Array");
return threadList.toArray(new Thread[0]);
}
}