Test results:
OpenJFX 11 never hangs
OpenJFX 13 always hangs
OpenJFX 15ea the webview frame comes up empty but the runtime never hangs
The Java version has no effect.
The hang seems to occur in native code since there is no way to take a thread
dump using jstack and the only possible action is to kill the process.
Is there any other logging or diagnostic you can suggest?
February 10, 2020 7:24:54 PM CET Kevin Rushforth <kevin.rushfo...@oracle.com>
wrote: Can you also try JDK 11 with OpenJFX 13? I suspect it will not make
a difference (i.e., it will still hang), but it would be good to confirm.
And even more interesting will be the results of JavaFX 15-ea.
Thanks.
-- Kevin
On 2/10/2020 10:17 AM, Lior Yaffe wrote:
The problem does not reproduce when using JavaFX 11 regardless of the
version of Java being used.
I will try with Java 15ea
On Mon, Feb 10, 2020, 17:01 Kevin Rushforth
<kevin.rushfo...@oracle.com> wrote:
And one last thing to try: can you run it with the JavaFX
15-ea+1 build
and see if that makes a difference?
-- Kevin
On 2/10/2020 6:59 AM, Kevin Rushforth wrote:
> Seems I missed your comment about it being hung to the
point you can't
> run jstack.
>
> If you are using JDK 12 or later, you might try with JDK
11 and see if
> that makes a difference. It will help narrow it down to a
change in
> the JDK versus a change in JavaFX (although I suspect it's
a change in
> JavaFX).
>
> -- Kevin
>
> On 2/10/2020 6:40 AM, Kevin Rushforth wrote:
>> A thread stack dump using "jstack" might be helpful.
>>
>> Also, what version of the JDK are you running?
>>
>> -- Kevin
>>
>>
>> On 2/9/2020 4:07 AM, Lior Yaffe wrote:
>>> My application is a Java application running a
Javascript/Html website
>>> inside a JavaFX WebView. It was working stable for
several years with
>>> various versions of Java and JavaFX.
>>> As far as I can tell it is following best coding
practices such as
>>> running
>>> all UI code in the JavaFX thread and as such.
>>>
>>> Since upgrading to JavaFX 13 my application hangs
sporadically. When it
>>> happens the website running inside the webview becomes
unresponsive and
>>> displays an hourglass icon.
>>> When the app hangs I cannot take a thread dump using
jstack or close
>>> the
>>> application. I have to kill it.
>>>
>>> The problem is reproduced on multiple Windows
workstations. It was
>>> never
>>> reported or reproduced on Linux or Mac so there is a
chance it is
>>> Windows
>>> specific.
>>> When the app hangs the CPU is ideal so this is not a
busy loop.
>>> Which diagnostic information can I obtain to better
understand this
>>> problem?
>>
>
