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/*
* Copyright (c) 2012, 2015, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 7120365
* @summary test on Concurrent Modification
* @author Shanliang JIANG
*
* @run main ConcurrentModificationTest
*/
import java.net.MalformedURLException;
import java.util.ConcurrentModificationException;
import javax.management.MBeanServer;
import javax.management.MBeanServerConnection;
import javax.management.MBeanServerFactory;
import javax.management.Notification;
import javax.management.NotificationListener;
import javax.management.ObjectName;
import javax.management.remote.JMXConnector;
import javax.management.remote.JMXConnectorFactory;
import javax.management.remote.JMXConnectorServer;
import javax.management.remote.JMXConnectorServerFactory;
import javax.management.remote.JMXServiceURL;
/**
*
*/
public class ConcurrentModificationTest {
private static final String[] protocols = {"rmi", "iiop", "jmxmp"};
private static int number = 100;
private static final MBeanServer mbs = MBeanServerFactory.createMBeanServer();
private static ObjectName delegateName;
private static ObjectName[] timerNames = new ObjectName[number];
private static NotificationListener[] listeners = new NotificationListener[number];
private static Throwable uncaughtException = null;
public static void main(String[] args) throws Exception {
System.out.println(">>> test on Concurrent Modification.");
Thread.setDefaultUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler() {
@Override
public void uncaughtException(Thread t, Throwable e) {
e.printStackTrace();
if (e instanceof ConcurrentModificationException) {
uncaughtException = e;
}
}
});
delegateName = new ObjectName("JMImplementation:type=MBeanServerDelegate");
for (int i=0; i<number; i++) {
timerNames[i] = new ObjectName("MBean:name=Timer"+i);
listeners[i] = new NotificationListener() {
@Override
public void handleNotification(Notification notification, Object handback) {
// nothing
}
};
}
String errors = "";
for (int i = 0; i < protocols.length; i++) {
uncaughtException = null;
System.out.println(">>> Test for protocol " + protocols[i]);
test(protocols[i]);
if (uncaughtException != null) {
if ("".equals(errors)) {
errors = "Failed to " + protocols[i] + ": "+uncaughtException;
} else {
errors = errors+", failed to " + protocols[i] + ": "+uncaughtException;
}
System.out.println(">>> FAILED for protocol " + protocols[i]);
} else {
System.out.println(">>> PASSED for protocol " + protocols[i]);
}
}
if ("".equals(errors)) {
System.out.println("All Passed!");
} else {
System.out.println("!!!!!! Failed.");
throw new RuntimeException(errors);
}
}
private static void test(String proto) throws Exception {
JMXServiceURL u = new JMXServiceURL(proto, null, 0);
JMXConnectorServer server;
JMXConnector client;
try {
server =
JMXConnectorServerFactory.newJMXConnectorServer(u, null, mbs);
server.start();
JMXServiceURL addr = server.getAddress();
client = JMXConnectorFactory.connect(addr, null);
} catch (MalformedURLException e) {
System.out.println(">>> not support: " + proto);
return;
}
final MBeanServerConnection mserver = client.getMBeanServerConnection();
int count = 0;
boolean adding = true;
while (uncaughtException == null && count++ < 10) {
for (int i = 0; i < number; i++) {
listenerOp(mserver, listeners[i], adding);
mbeanOp(mserver, timerNames[i], adding);
}
adding = !adding;
}
if (uncaughtException != null) { // clean
for (int i = 0; i < number; i++) {
try {
mbeanOp(mserver, timerNames[i], false);
} catch (Exception e) {
}
}
}
client.close();
server.stop();
}
private static void mbeanOp(MBeanServerConnection mserver, ObjectName name, boolean adding)
throws Exception {
if (adding) {
mserver.createMBean("javax.management.timer.Timer", name);
} else {
mserver.unregisterMBean(name);
}
}
private static void listenerOp(MBeanServerConnection mserver, NotificationListener listener, boolean adding)
throws Exception {
if (adding) {
mserver.addNotificationListener(delegateName, listener, null, null);
} else {
mserver.removeNotificationListener(delegateName, listener);
}
}
}
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