[vtkusers] a question vtk, python and threading

[Charl Botha]

2010/1/29 Lic. José M. Rodriguez Bacallao <jmrbcu at gmail.com>:
> well, I've digged in the source code in vtk 5.4.2 and it is not done
> yet, maybe for the next release, this patch rocks. For now, I have
> patched the source of vtk 5.4.2 with the patches provided by DRE and
> it seems to work very well as long as U don't have any python
> observers listening for events in a vtk object created in another
> thread, you cuold only observe in the same thread that created the
> observed object. Besides that, everything work like a charm until now.
>
> On 1/29/10, David Gobbi <david.gobbi at gmail.com> wrote:
>> If Charl was still active on the list, I'm sure he would have a quick
>> answer, but it seems that no-one who is familiar with the GIL in VTK
>> is responding.  So your best bet is to look at the source code and
>> find out the answer yourself.

I'm still here, just currently very busy so I'm not covering the list with 100%.

The patch is indeed not yet applied in VTK CVS. AFAICR, you're right
that it doesn't cover the situation where an observer from a different
thread has subscribed to an object.  Taking care of this correctly
would mean huge changes to VTK, so pragmatism dictates that one lives
with this limitation.

See you,
Charl