Re: SwingUtilities.invokeLater hang or deadlock

 

Hi,

 

   re: Inexplicable deadlock or hang when calling SwingUtilities.invokeLater(Runnable r).

 

   Everyone knows about Swing thread-safety issues that can cause hangs & deadlocks.  They are often solved by using SwingUtilities.invokeLater.

 

   But, strangely, I'm getting reproducible hangs & deadlocks calling that very same function: SwingUtilities.invokeLater(Runnable r).

 

   The runnable is never invoked, and the function never returns.  CPU usage is nil, the application gets tagged as "not responding" and must be force quit.

 

   1. No hard crash occurs.

   2. This happens about 50% of the time calling the exact same code.

   3.  The code is being called from a user thread (new Thread().start()...), not the Swing thread.

   4.  It doesn't matter what the code in the Runnable() is.

 

   java.version: 1.4.2_09

   java.vm.version: 1.4.2-54

   os version: 10.4.3

  

   1.8 ghz powerpc g5, patched today.

 

   Any ideas?  All help appreciated.

 

Charles.

 

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