<AWT Dev> OpenJdk11-28-EA JDialog hanging

Sergey Bylokhov Sergey.Bylokhov at oracle.com
Mon Oct 29 18:06:26 UTC 2018

Hi, Martin.
Thank you for this details description of the problem, I have tried to summarize it in this test, which should fail on all platforms:


It creates a number of SequencedEvents and post them in a different orders. It also has some additional checks, for example InvocationEvent posted in between of SequencedEvents should be dispatched in the same order as posted/ or posted not early that SequencedEvents. Some new checks might be added.

Here is another version of the fix which tries to resolve the problem covered by the test above:

But I have run it for a night in a bash loop, and it failed after 100+ iterations. So there is some room for improvements.

Note that this fix should be applied on top of JDK-8211435:

On 26/10/2018 15:25, Martin Balao wrote:
>     If you are talking about an example from this message:
>     http://mail.openjdk.java.net/pipermail/awt-dev/2018-October/014426.html <http://mail.openjdk.java.net/pipermail/awt-dev/2018-October/014426.html>
> That's only the first half of this issue, which is indeed easy to fix by just dispatching SentEvent events. The second half is here: http://mail.openjdk.java.net/pipermail/awt-dev/2018-October/014436.html

Best regards, Sergey.

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