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41 import javax.management.*;
42 import javax.management.remote.*;
43 import java.io.IOException  ;
44 import java.net.MalformedURLException ;
45
46
50 public class FullThreadDump {
51 private MBeanServerConnection server;
52 private JMXConnector jmxc;
53 public FullThreadDump(String hostname, int port) {
54 System.out.println("Connecting to " + hostname + ":" + port);
55
56 String urlPath = "/jndi/rmi://" + hostname + ":" + port + "/jmxrmi";
59 connect(urlPath);
60 }
61
62 public void dump() {
63 try {
64 ThreadMonitor monitor = new ThreadMonitor(server);
65 monitor.threadDump();
66 if (!monitor.findDeadlock()) {
67 System.out.println("No deadlock found.");
68 }
69 } catch (IOException e) {
70 System.err.println("\nCommunication error: " + e.getMessage());
71 System.exit(1);
72 }
73 }
74
75
78 private void connect(String urlPath) {
79 try {
80 JMXServiceURL url = new JMXServiceURL("rmi", "", 0, urlPath);
81 this.jmxc = JMXConnectorFactory.connect(url);
82 this.server = jmxc.getMBeanServerConnection();
83 } catch (MalformedURLException e) {
84 } catch (IOException e) {
86 System.err.println("\nCommunication error: " + e.getMessage());
87 System.exit(1);
88 }
89 }
90
91 public static void main(String [] args) {
92 if (args.length != 1) {
93 usage();
94 }
95
96 String [] arg2 = args[0].split(":");
97 if (arg2.length != 2) {
98 usage();
99 }
100 String hostname = arg2[0];
101 int port = -1;
102 try {
103 port = Integer.parseInt(arg2[1]);
104 } catch (NumberFormatException x) {
105 usage();
106 }
107 if (port < 0) {
108 usage();
109 }
110
111 FullThreadDump ftd = new FullThreadDump(hostname, port);
113 ftd.dump();
114 }
115
116 private static void usage() {
117 System.out.println("Usage: java FullThreadDump <hostname>:<port>");
118 }
119 }
120 |
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