CODEWITHSUNDEEP
javadebugging
assylias
assylias

Reputation: 328618

Diagnose frozen application

I have a GUI component that freezes my Java desktop application after a few hours if I leave it open. It looks like a deadlock, probably involving the Event Dispatching Thread.

I have tried running jconsole, jstack and jvisualvm once the application is frozen to analyse the thread dump but all 3 fail (giving various exceptions that come down to "could not connect to the process").

Is there another way to diagnose a frozen application and find out what's going on?

ps: for information, the GUI component is a Java FX 2 table embedded in a Swing panel - it opens fine, reacts well to various interactions, can be closed, but freezes the application after some time.

Upvotes: 2

Views: 317

Answers (1)

Rob Kielty
Rob Kielty

Reputation: 8162

Attach jconsole prior to the freeze.

Monitoring the app prior to the crash may be your only option to get useful info.

I'd consider reporting this as jstack/jconsole/jvisualvm bugs. You may get some good troubleshooting tips from the developers of same or an explanation of the "could not connect to the process" exceptions.

Upvotes: 1

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