Status on JDK-8305479 (+ info to reproduce it)

[SWinxy]

This appears to be a deadlock. I've been able to replicate it, but it's
annoyingly finicky to get it to freeze. A thread gets stuck on
WaitForSingleObject at awt_Toolkit.cpp#L3139 (in
AwtToolkit::InvokeInputMethodFunction) waiting for an object to be
signaled, but the signalling gets lost. And so it waits indefinitely.

dmarkov, do you know more? A possible solution would be to change the
timeout to be 1000ms, but that may have unintended effects.

SWinxy

On Mon, Aug 5, 2024 at 5:23 AM Reto Merz <reto.merz at abacus.ch> wrote:

> Hello,
>
> Our customers are using Drag & Drop functionality more and more
> and reports are increasing that our application is haning.
> It starts to escalate since the only workaround is to restart the app
> right now.
>
> The problem is already reported with JDK-8305479 [1]
>
> Is there any way to increase the priority of that issue
> or is a developer here we can hire to search for a fix (and create a pull
> request)?
>
> Btw, the bug is much easier to reproduce:
>
> 1) Start the demo app (see [1])
> 2) try to drop a document (eg: pdf file) from the windows desktop into the
> textfield
>
> Repeat step 2 if necessary. For me after 1-2 try this will cause the hang.
> If not, move the JFrame to another position and repeat step 2 again.
>
> Tested with latest JDK:
>     java version "22.0.2" 2024-07-16
>     Java(TM) SE Runtime Environment (build 22.0.2+9-70)
>     Java HotSpot(TM) 64-Bit Server VM (build 22.0.2+9-70, mixed mode,
> sharing)
>
> OS MS Windows:
>     Microsoft Windows [Version 10.0.17763.5458]
>
> Regards
> Reto Merz
>
> [1] https://bugs.openjdk.org/browse/JDK-8305479
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mail.openjdk.org/pipermail/client-libs-dev/attachments/20240807/6bdc0343/attachment-0001.htm>