[Rock-dev] rock-display crash when trying to display Vector3d as subfield

Leif Christensen leif.christensen at dfki.de
Wed Oct 22 11:36:04 CEST 2014 

Fix works fine on my system, thanks! Created a corresponding pull
request on github rock-core/tools-orocosrb.

Best,
Leif


Am 21.10.2014 um 23:30 schrieb Sylvain Joyeux:
> My guess is that SubPortProxy#on_data should not call super but
> on_raw_data. The whole subfield access can only work when using
> on_raw_data.
> 
> Try replacing with this (untested, might have some syntax errors ...)
> 
>         def on_data(policy = Hash.new)
>             on_raw_data(policy) do |sample|
>                 sample = Typelib.to_ruby(sample) if sample
>                 yield(sample)
>             end
>         end
> 
> On Tue, Oct 21, 2014 at 5:34 PM, Leif Christensen
> <leif.christensen at dfki.de> wrote:
>> Hi,
>>
>> I'm writing a std::vector<base::samples::IMUSensors> to a port.
>> rock-display can display the Vector3d members of each entry in the
>> vector, but trying to vizualize one of them with Plot2d crashes
>> rock-display:
>>
>>> /home/leifole/dev/rock/magneto/tools/orocos.rb/lib/orocos/async/task_context_proxy.rb:430:in `block in subfield': undefined method `raw_get' for #<Typelib::ContainerType::DeepCopyArray:0x0000000556e6e0> (NoMethodError)
>>>       from /home/leifole/dev/rock/magneto/tools/orocos.rb/lib/orocos/async/task_context_proxy.rb:423:in `each'
>>>       from /home/leifole/dev/rock/magneto/tools/orocos.rb/lib/orocos/async/task_context_proxy.rb:423:in `subfield'
>>>       from /home/leifole/dev/rock/magneto/tools/orocos.rb/lib/orocos/async/task_context_proxy.rb:348:in `block in on_data'
>>>       from /home/leifole/dev/rock/magneto/tools/orocos.rb/lib/orocos/async/task_context_proxy.rb:299:in `block in on_data'
>>>       from /home/leifole/dev/rock/magneto/tools/orocos.rb/lib/orocos/async/object_base.rb:51:in `call'
>>>       from /home/leifole/dev/rock/magneto/tools/orocos.rb/lib/orocos/async/object_base.rb:51:in `call'
>>>       from /home/leifole/dev/rock/magneto/tools/orocos.rb/lib/orocos/async/ports.rb:101:in `really_add_listener'
>>>       from /home/leifole/dev/rock/magneto/tools/orocos.rb/lib/orocos/async/object_base.rb:305:in `block in really_add_listener'
>>>       from /home/leifole/dev/rock/magneto/tools/orocos.rb/lib/orocos/async/object_base.rb:301:in `each'
>>>       from /home/leifole/dev/rock/magneto/tools/orocos.rb/lib/orocos/async/object_base.rb:301:in `really_add_listener'
>>>       from /home/leifole/dev/rock/magneto/tools/orocos.rb/lib/orocos/async/ports.rb:300:in `really_add_listener'
>>>       from /home/leifole/dev/rock/magneto/tools/orocos.rb/lib/orocos/async/object_base.rb:305:in `block in really_add_listener'
>>>       from /home/leifole/dev/rock/magneto/tools/orocos.rb/lib/orocos/async/object_base.rb:301:in `each'
>>>       from /home/leifole/dev/rock/magneto/tools/orocos.rb/lib/orocos/async/object_base.rb:301:in `really_add_listener'
>>>       from /home/leifole/dev/rock/magneto/tools/orocos.rb/lib/orocos/async/task_context_proxy.rb:294:in `really_add_listener'
>>>       from /home/leifole/dev/rock/magneto/tools/orocos.rb/lib/orocos/async/object_base.rb:287:in `block in add_listener'
>>>       from /home/leifole/dev/rock/magneto/tools/utilrb/lib/utilrb/event_loop.rb:158:in `call'
>>>       from /home/leifole/dev/rock/magneto/tools/utilrb/lib/utilrb/event_loop.rb:158:in `call'
>>>       from /home/leifole/dev/rock/magneto/tools/utilrb/lib/utilrb/event_loop.rb:615:in `block in step'
>>>       from /home/leifole/dev/rock/magneto/tools/utilrb/lib/utilrb/event_loop.rb:704:in `call'
>>>       from /home/leifole/dev/rock/magneto/tools/utilrb/lib/utilrb/event_loop.rb:704:in `handle_errors'
>>>       from /home/leifole/dev/rock/magneto/tools/utilrb/lib/utilrb/event_loop.rb:615:in `step'
>>>       from /home/leifole/dev/rock/magneto/gui/vizkit/lib/vizkit/vizkit.rb:142:in `block in exec'
>>>       from /usr/lib/ruby/vendor_ruby/1.9.1/Qt/qtruby4.rb:2427:in `call'
>>>       from /usr/lib/ruby/vendor_ruby/1.9.1/Qt/qtruby4.rb:2427:in `invoke'
>>>       from /usr/lib/ruby/vendor_ruby/1.9.1/Qt/qtruby4.rb:469:in `qt_metacall'
>>>       from /usr/lib/ruby/vendor_ruby/1.9.1/Qt/qtruby4.rb:469:in `method_missing'
>>>       from /usr/lib/ruby/vendor_ruby/1.9.1/Qt/qtruby4.rb:469:in `exec'
>>>       from /home/leifole/dev/rock/magneto/gui/vizkit/lib/vizkit/vizkit.rb:146:in `exec'
>>>       from /home/leifole/dev/rock/magneto/gui/vizkit/bin/rock-display:107:in `<main>'
>>>       from /home/leifole/dev/rock/magneto/tools/utilrb/lib/utilrb/event_loop.rb:622:in `step'
>>>       from /home/leifole/dev/rock/magneto/gui/vizkit/lib/vizkit/vizkit.rb:142:in `block in exec'
>>>       from /usr/lib/ruby/vendor_ruby/1.9.1/Qt/qtruby4.rb:2427:in `call'
>>>       from /usr/lib/ruby/vendor_ruby/1.9.1/Qt/qtruby4.rb:2427:in `invoke'
>>>       from /usr/lib/ruby/vendor_ruby/1.9.1/Qt/qtruby4.rb:469:in `qt_metacall'
>>>       from /usr/lib/ruby/vendor_ruby/1.9.1/Qt/qtruby4.rb:469:in `method_missing'
>>>       from /usr/lib/ruby/vendor_ruby/1.9.1/Qt/qtruby4.rb:469:in `exec'
>>>       from /home/leifole/dev/rock/magneto/gui/vizkit/lib/vizkit/vizkit.rb:146:in `exec'
>>>       from /home/leifole/dev/rock/magneto/gui/vizkit/bin/rock-display:107:in `<main>'
>>
>> In task_context_proxy.rb, the function subfield(sample,field) of class
>> SubGroupProxy does some checks on types, but only after calling
>> sample.raw_get . Do I have to do some typelib magic?
>>
>> Btw, visualizing Vector3d members of IMUSensors not in a container works
>> fine.
>>
>> Regards,
>> Leif
>>
>> --
>>  Leif Christensen
>>
>>  DFKI Bremen
>>  Robotics Innovation Center
>>  Robert-Hooke-Straße 5
>>  28359 Bremen, Germany
>>
>>  Phone: +49 (0)421 17845-4149
>>  Fax:   +49 (0)421 17845-4150
>>  E-Mail: leif.christensen at dfki.de
>>
>>  Weitere Informationen: http://www.dfki.de/robotik
>>  -----------------------------------------------------------------------
>>  Deutsches Forschungszentrum fuer Kuenstliche Intelligenz GmbH
>>  Firmensitz: Trippstadter Straße 122, D-67663 Kaiserslautern
>>  Geschaeftsfuehrung: Prof. Dr. Dr. h.c. mult. Wolfgang Wahlster
>>  (Vorsitzender) Dr. Walter Olthoff
>>  Vorsitzender des Aufsichtsrats: Prof. Dr. h.c. Hans A. Aukes
>>  Amtsgericht Kaiserslautern, HRB 2313
>>  Sitz der Gesellschaft: Kaiserslautern (HRB 2313)
>>  USt-Id.Nr.:    DE 148646973
>>  Steuernummer:  19/673/0060/3
>>  -----------------------------------------------------------------------
>>
>> _______________________________________________
>> Rock-dev mailing list
>> Rock-dev at dfki.de
>> http://www.dfki.de/mailman/cgi-bin/listinfo/rock-dev

-- 
 Leif Christensen

 DFKI Bremen
 Robotics Innovation Center
 Robert-Hooke-Straße 5
 28359 Bremen, Germany

 Phone: +49 (0)421 17845-4149
 Fax:   +49 (0)421 17845-4150
 E-Mail: leif.christensen at dfki.de

 Weitere Informationen: http://www.dfki.de/robotik
 -----------------------------------------------------------------------
 Deutsches Forschungszentrum fuer Kuenstliche Intelligenz GmbH
 Firmensitz: Trippstadter Straße 122, D-67663 Kaiserslautern
 Geschaeftsfuehrung: Prof. Dr. Dr. h.c. mult. Wolfgang Wahlster
 (Vorsitzender) Dr. Walter Olthoff
 Vorsitzender des Aufsichtsrats: Prof. Dr. h.c. Hans A. Aukes
 Amtsgericht Kaiserslautern, HRB 2313
 Sitz der Gesellschaft: Kaiserslautern (HRB 2313)
 USt-Id.Nr.:    DE 148646973
 Steuernummer:  19/673/0060/3
 -----------------------------------------------------------------------

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