<AWT Dev> [9] Review Request: 8032864 [macosx] sigsegv (0Xb) Being Generated When Starting JDev With Voiceover Running

Anthony Petrov anthony.petrov at oracle.com
Thu Jul 10 21:59:43 UTC 2014

Hi Petr,

I'm fine with the targeted fix. We often do a similar thing in JavaFX 
when processing various events, so the approach is proven to work good.

However, generally I agree with your comment from the bug report about 
the necessity to process dispose selectors in the outer event loop only. 
IIRC, we do something similar in the WToolkit native implementation. So 
I suggest to file a separate medium priority bug to investigate this 
further for JDK 9 (or tbd-major).

best regards,

On 7/10/2014 5:02 PM, Petr Pchelko wrote:
> Hello, AWT team.
> Please review a small fix for the issue:
> https://bugs.openjdk.java.net/browse/JDK-8032864
> The fix is available at:
> http://cr.openjdk.java.net/~pchelko/9/8032864/webrev.01/
> I failed to create a general fix for the core problem, so I've made a point fix for this bug. The problem is that CAccessible.getFocusOwner opens a nested loop and goes to EDT.
> This leads to some unknown reordering of selectors, and we crash. retain/releasing the window around the call to getFocusOwner fixes this particular bug.
> I've trued to make a minimal fix as it needs to be backported to 8 and 7. I've checked for memory leaks using Instruments.
> With best regards. Petr.

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