RFR: 8273485: Deadlock when also using Swing and exiting Fullscreen on Mac [v4]

[Kevin Rushforth]

On Thu, 16 Sep 2021 13:22:32 GMT, Florian Kirmaier <fkirmaier at openjdk.org> wrote:

>> When using Swing it's possible to generate a Deadlock.
>>  It's related to the nested eventloop started in enterFullScreenExitingLoop - and the RenderLock aquired when using setView in Scene.
>>  Sample Programm and Threaddump are added to the ticket.
>> 
>> Removing the nested loop fixes the Problem. 
>> I hope this doesn't have any side effect - so far i don't know of any.
>
> Florian Kirmaier has updated the pull request incrementally with one additional commit since the last revision:
> 
>   JDK-8273485
>   small cleanup of the changes.

You can also see the exception with _any_ JavaFX program: enter full-screen with the green button, move the mouse to the upper-left corner to reveal the window decorations, and press the red button to exit the program.

I think you need to look for a different solution to your deadlock, one that preserves the existing nested event loop.

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PR: https://git.openjdk.java.net/jfx/pull/622