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Asked: 2026-05-10T18:38:27+00:00

I like to generate a thread dump programmatically. I’ve learned that there a basically

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I like to generate a thread dump programmatically. I’ve learned that there a basically two ways to do it:

  1. Use the ‘Java Virtual Machine Tool Interface’ JVM-TI
  2. Use the higher abstracted ‘Java Debugger Interface’ JDI

For the JVM-TI I was able to find some useful information, but I would have to write a JNI-DLL which, at least for the moment, I would like to avoid. With the JDI I can use Java and it seems I’m able to use it from within the application. But I wasn’t able to find some kind of tutorial or HOWTO for it. The only documentation I could find, were the Java-Docs http://java.sun.com/j2se/1.5.0/docs/guide/jpda/jdi/ which isn’t very helpful, because it doesn’t show me how to use this classes.

So, does anybody know of a good tutorial/book I could read?

Thx for any help!

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1 Answer

  1. Did you consider the remote alternative ? I.e. VisualVM

    thead dump with visualVM

    jps and jstack are also useful tools included in JDK 5, providing a quick command line method for obtaining stack traces of all current threads.

    This article suggest JDI is also used as a remote tool.

    So I am not sure you can triggers a thread dump within your own program, instead you find a way to send to yourself a SIGQUIT signal (kill -3) on Unix platforms, or press the Ctrl-\ key on Unix or Ctrl-Break on Windows platforms.

    Plus, JDI wasn’t intended to be used to debug the same process in which the JDI client is running. Still this thread I just linked to is the closest I have found to actually use JDI within the same program.

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