[vtkusers] Python Bindings & GIL (Blocking issues)

[Lic. José M. Rodriguez Bacallao]

yes, I did the same with the callback to ProgressEvents. If U sleep
the thread, the load of the dataset will be (number_of_callback_fired
* time_thread_is_sleeping) slower, isn't it?

PS: sorry, I will press the <reply all> next time.

On 1/21/10, Christopher Denter <dennda at the-space-station.com> wrote:
> Hello,
>
> in my particular case I have been able to work around the problem to some
> degree by using callbacks for ProgressEvents (I need those anyway for a
> progress bar) and a bad hack.
> The bad hack is now that each time the callback is called, I make the thread
> sleep for 0.05 seconds so that the main thread has some time to catch up.
>
> Of course this is not a proper solution but just a bad hack. It helps
> animate a progress bar though.
>
> Jose, please make sure to hit 'Reply All' to also send a mail to the VTK
> mailing list.
>
> HTH,
> 	Christopher
>
> On 21. Jan, 2010, at 4:11 PM, Lic. José M. Rodriguez Bacallao wrote:
>
>> I have the same issue, with vtk and PyQt threads or python threads,
>> any suggestions?
>>
>> On 1/20/10, Christopher Denter <dennda at the-space-station.com> wrote:
>>> Hello.
>>>
>>> In my application I want to load a large dataset in a different thread to
>>> keep the UI responsive. However, as soon as the VTK code is executed,
>>> only
>>> that one thread runs and my UI freezes for the duration of the loading
>>> operation. Do the VTK bindings block the python interpreter?
>>> VTK_NO_PYTHON_THREADS is disabled. I'm running Python 2.6.4 on OSX 10.6.
>>>
>>> (To be precise, all the thread does currently - for testing reasons - is
>>> create a vtkDICOMImageReader and read a dataset. If I replace all VTK
>>> related stuff with a simple time.sleep(10), the UI remains responsive,
>>> hence
>>> my conclusion.)
>>>
>>> Thanks,
>>> 	Christopher
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>>
>>
>> --
>> Lic. José M. Rodriguez Bacallao
>> Centro de Biofisica Medica
>> -----------------------------------------------------------------
>> Todos somos muy ignorantes, lo que ocurre es que no todos ignoramos lo
>> mismo.
>>
>> Recuerda: El arca de Noe fue construida por aficionados, el titanic
>> por profesionales
>> -----------------------------------------------------------------
>
>


-- 
Lic. José M. Rodriguez Bacallao
Centro de Biofisica Medica
-----------------------------------------------------------------
Todos somos muy ignorantes, lo que ocurre es que no todos ignoramos lo mismo.

Recuerda: El arca de Noe fue construida por aficionados, el titanic
por profesionales
-----------------------------------------------------------------