/* * @(#)FullThreadDump.java	1.5 05/11/17 *  * Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved. *  * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: *  * -Redistribution of source code must retain the above copyright notice, this *  list of conditions and the following disclaimer. *  * -Redistribution in binary form must reproduce the above copyright notice,  *  this list of conditions and the following disclaimer in the documentation *  and/or other materials provided with the distribution. *  * Neither the name of Sun Microsystems, Inc. or the names of contributors may  * be used to endorse or promote products derived from this software without  * specific prior written permission. *  * This software is provided "AS IS," without a warranty of any kind. ALL  * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING * ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE * OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN") * AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE * AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST  * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL,  * INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY  * OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE,  * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. *  * You acknowledge that this software is not designed, licensed or intended * for use in the design, construction, operation or maintenance of any * nuclear facility. *//* * @(#)FullThreadDump.java	1.5 05/11/17 */import javax.management.*;import javax.management.remote.*;import java.io.IOException;import java.net.MalformedURLException;/** * This FullThreadDump class demonstrates the capability to get * a full thread dump and also detect deadlock remotely. */public class FullThreadDump {    private MBeanServerConnection server;    private JMXConnector jmxc;    public FullThreadDump(String hostname, int port) {        System.out.println("Connecting to " + hostname + ":" + port);        // Create an RMI connector client and connect it to        // the RMI connector server        String urlPath = "/jndi/rmi://" + hostname + ":" + port + "/jmxrmi";        connect(urlPath);   }      public void dump() {        try {            ThreadMonitor monitor = new ThreadMonitor(server);            monitor.threadDump();            if (!monitor.findDeadlock()) {                System.out.println("No deadlock found.");            }        } catch (IOException e) {            System.err.println("\nCommunication error: " + e.getMessage());            System.exit(1);        }    }    /**     * Connect to a JMX agent of a given URL.      */    private void connect(String urlPath) {        try {            JMXServiceURL url = new JMXServiceURL("rmi", "", 0, urlPath);            this.jmxc = JMXConnectorFactory.connect(url);            this.server = jmxc.getMBeanServerConnection();        } catch (MalformedURLException e) {            // should not reach here        } catch (IOException e) {            System.err.println("\nCommunication error: " + e.getMessage());            System.exit(1);        }    }    public static void main(String[] args) {        if (args.length != 1) {            usage();        }        String[] arg2 = args[0].split(":");        if (arg2.length != 2) {            usage();        }        String hostname = arg2[0];        int port = -1;        try {            port = Integer.parseInt(arg2[1]);        } catch (NumberFormatException x) {            usage();        }        if (port < 0) {            usage();        }         // get full thread dump and perform deadlock detection        FullThreadDump ftd = new FullThreadDump(hostname, port);        ftd.dump();    }    private static void usage() {        System.out.println("Usage: java FullThreadDump <hostname>:<port>");    }}