IcedTea6-plugin PluginAppletSecurityContext NullPointers

[Deepak Bhole]

* Oliver May <oliver.may at dfc.be> [2009-02-13 04:35]:
> Seems my message got hold back by the mailing list because the large 
> attachment, I uploaded the file to the website too:
> http://geomajas.org/users/oliverm/freerunner-gpsApplet/applet-test.tgz
>
> Hi Deepak!
>
>  >>
>  >> What website do you see this error on?
>  >>
>  >> As for PluginDebug.debug() ... its messages go to STDERR. However,
>  >> debug() prints only if you have set ICEDTEAPLUGIN_DEBUG=true, and in
>  >> that case, all OUT/ERR is redirected to /tmp/java.stdout and
>  >> /tmp/java.stderr
>  >>
>  >> Cheers,
>  >> Deepak
>  >>
>  >
>  > Whoops.. should have checked the ML first.
>  >
>  > Okay, can you start the browser with the env variable
>  > ICEDTEAPLUGIN_DEBUG=true , and then send the resulting log
>  > and /tmp/java.std* files?
>  >
>  > Deepak
>  >
>
> I did some more testing, and put the applet I am using online with some
> simple javascript <> java interaction, including the source files.
>
> http://geomajas.org/users/oliverm/freerunner-gpsApplet/test-applet.html
>

What version of IcedTea are you trying this with again? I think I have
seen this sort of error once before, but I was never able to reproduce
it. After that though, I changed one of the structures in
PluginAppletSecurityContext (where the NPE is happening) to be a
Hashtable instead of HashMap. So in theory, any NPE should get thrown
when the table is updated, rather than when the value is read. From the
logs, it appears that the latter is the case.

Can you try running it with IcedTea 1.4 or later and attach those logs
please?

Thanks,
Deepak

> The applet expects a gpsd running on localhost, but it wont crash
> without it. You may forward local port 2947 to gpsd.mainframe.cx:2947
> for some real data (real, but static, mainframe.cx is not moving :)).
>
> Using this site I just did a test with debugging output:
>
> debian-gta02:/tmp# ICEDTEAPLUGIN_DEBUG=true
> debian-gta02:/tmp# export ICEDTEAPLUGIN_DEBUG
> debian-gta02:/tmp# (iceweasel > /tmp/iceweasel.out) >& /tmp/iceweasel.err
>
> so i have also gathered the iceweasel process out and err streams.
>
> What I did is:
> +Started iceweasel and opened http://geomajas.org....
> +Waited until the applet was completely loaded (cpu idle)
> +Clicked on "Start gps" and waited like 10 minutes until cpu idle
> +Clicked on "Get gps data", this returned null in the textbox after half
> a second.
> +Clicked on "Stop gps"
> +Clicked on "Get gps data" again, wich actet the same way as before
> +Closed iceweasel
>
> Btw, there seem to be some real performance issues too, the first call
> from javascript to java takes ages, esp. with debugging turned on. But
> that could even well be the rather slow cpu (200 bogoMIPS, 400MHz arm).
>
> Greetings!
>
> -- 
> Oliver May
>
> DFC Software Engineering
> GeoMajas partner www.geomajas.org
>
> Brugsesteenweg 587
> B-9030 Gent
> Belgium
> T: +32 9 236 61 96
> F: +32 9 236 54 12
> E: oliver.may at dfc.be
> W: www.dfc.be
>