Hi Yuri,
I've submit a bug for the first problem:
4458891- MasterControl throw NullPointerException
sometimes when exit from applet
as a record before receiving your test application.
For the second problem, I believe it is same as bug
4457394 - NullPointerException when unregister View if Shape3D is not add in
OrderedGroup
based on the line number from the stack trace.
Thanks for your bug report.
- Kelvin
-------------
Java 3D Team
Sun Microsystems Inc.
>X-Unix-From: [EMAIL PROTECTED] Wed May 16 10:54:51 2001
>From: Yuri Nikishkov <[EMAIL PROTECTED]>
>To: "'Kelvin Chung'" <[EMAIL PROTECTED]>
>Cc: [EMAIL PROTECTED]
>Subject: RE: [JAVA3D] Exception on exiting applet
>Date: Wed, 16 May 2001 13:54:07 -0400
>MIME-Version: 1.0
>
>Hi Kelvin,
>
>thank you for a quick reply. Unfortunately, it is not easy for us to send
>you our applet since it needs a connection to server to load examples. We
>are currently preparing the local application to send you for evaluation, so
>that should do it.
> Meanwhile, I could probably give you some clues on why we have this
>exception. Since we need to run our applet multiple time without unloading
>the VM we are very concerned about releasing memory after the applet is
>gone. So we are doing extensive clean-up at the applet destroy() call,
>including detaching Java3D tree, view branch, removing canvas from the view
>and removing all window structure. I am pretty sure that this clean-up is
>responsible for the exception that causes subsequent hanging, in particular
>removing window structure seems to be the most suspicious.
> I also have the examples of one more exception that only happens if
>some geometries were drawn in immediate mode, and NOT reattached to the
>retained mode tree later:
>
>java.lang.NullPointerException:
> at javax.media.j3d.RenderBin.removeOrderedBin(RenderBin.java:4558)
> at
>javax.media.j3d.RenderBin.removeAllRenderAtoms(RenderBin.java:4529)
> at
>javax.media.j3d.MasterControl.unregisterView(MasterControl.java:1713)
> at
>javax.media.j3d.MasterControl.handlePendingRequest(MasterControl.java:2648)
> at javax.media.j3d.MasterControl.doWork(MasterControl.java:2570)
> at
>javax.media.j3d.MasterControlThread.run(MasterControlThread.java:28)
>
>This exception is thrown during VirtualUniverse.removeAllLocales() or, if I
>comment it out, any JPanel.remove() or JPanel.removeAll() call for the panel
>that contains Canvas3D. Again, if geometries drawn in immediate mode are
>later attached to the retained mode tree, the clean-up magically proceeds
>fine. Unfortunately, commenting out these methods, especially
>removeAllLocales() is not an option for us, since it leaves too much memory
>not released after the exit.
>
>Hope this will give you some idea about what is going on. I will try to
>investigate it further as well as what is needed for clean-up.
>
>- Yuri.
>
>
>-----Original Message-----
>From: Kelvin Chung [mailto:[EMAIL PROTECTED]]
>Sent: Tuesday, May 15, 2001 2:13 PM
>To: [EMAIL PROTECTED]
>Cc: [EMAIL PROTECTED]
>Subject: Re: [JAVA3D] Exception on exiting applet
>
>
>Hi Yuri,
>
> It is a bug in our library, can you please send
>us your applet to investigate ?
>
>Thanks for your bug report.
>
>- Kelvin
>---------------
>Java 3D Team
>Sun Microsystems Inc.
>
>>MIME-Version: 1.0
>>Date: Tue, 15 May 2001 13:59:36 -0400
>>From: Yuri Nikishkov <[EMAIL PROTECTED]>
>>Subject: [JAVA3D] Exception on exiting applet
>>To: [EMAIL PROTECTED]
>>
>>java.lang.NullPointerException
>> at
>>javax.media.j3d.MasterControl.addToStateThreads(MasterControl.java:2072)
>> at
>>javax.media.j3d.MasterControl.updateWorkThreads(MasterControl.java:2395)
>> at javax.media.j3d.MasterControl.doWork(MasterControl.java:2579)
>> at
>>javax.media.j3d.MasterControlThread.run(MasterControlThread.java:28)
>>
>>Did anybody ever have this exception? It happens sometimes on the exit from
>>our applet. If Java VM was not unloaded, the next attempt to start Java3D
>>would result in browser hanging. What can be the reason and how to get rid
>>of it?
>>
>>Thanks,
>>- Yuri.
===========================================================================
To unsubscribe, send email to [EMAIL PROTECTED] and include in the body
of the message "signoff JAVA3D-INTEREST". For general help, send email to
[EMAIL PROTECTED] and include in the body of the message "help".
