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| <h1>Thread Dumps |
| |
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| <p><a name="ThreadDumps-Java5tools"></a></p> |
| |
| <h1>Java 5 tools</h1> |
| |
| <p>This should work on any Java 5 or newer platform.</p> |
| |
| <pre><code>$ jps |
| 3392 Jps |
| 3387 JConsole |
| |
| |
| |
| $ jstack 3387 |
| Attaching to process ID 3387, please wait... |
| Debugger attached successfully. |
| Client compiler detected. |
| JVM version is 1.5.0_16-133 |
| Thread t@59139: (state = BLOCKED) |
| - java.lang.Object.wait(long) @bci=0 (Interpreted frame) |
| - javax.swing.TimerQueue.run() @bci=14, line=236 (Interpreted frame) |
| - java.lang.Thread.run() @bci=11, line=613 (Interpreted frame) |
| </code></pre> |
| |
| <p><a name="ThreadDumps-OSsignals"></a></p> |
| |
| <h1>OS signals</h1> |
| |
| <p>In the case of an OS signal the thread dump is printed to the console |
| window that started the java process. If you use javaw to start the |
| process, the dump is lost.</p> |
| |
| <p>On Windows, typing <em>ctrl-break</em> in the console window that started the Java |
| process. |
| On Unix, the command <em>kill -QUIT <pid></em> or typing <em>ctrl-\</em> in the |
| console window that started the Java process.</p> |
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