Gui freezes during execution of a perl script which is never completed

Dear Java programmers,
I'm running a perl script which takes a few minutes to finish from a GUI. But when the execution reaches a point, it suddenly seems to stop and the GUI becomes irresponsive. Submitting the perl script to run as a separate thread to release the button doesn't make any different either. Is there any restriction in the time that swing allows external programs to run?
thanks in advance,
Tom

tevang2 wrote:
I'm running a perl script which takes a few minutes to finish from a GUI. But when the execution reaches a point, it suddenly seems to stop and the GUI becomes irresponsive. Then you're tying up the Swing EDT, the event dispatch thread, which is the single thread responsible for drawing the Swing app and responding to user input.
Submitting the perl script to run as a separate thread to release the button doesn't make any different either. Is there any restriction in the time that swing allows external programs to run?None that I know of. I still have to wonder if you are creating a background thread properly because even if your perl script gets locked, if you are running it on a background thread, the Swing app shouldn't lock up.

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