[IPython-dev] Re: [SciPy-dev] Generic gui_thread + IPython: solution already exists!

[Fernando Perez]

Prabhu Ramachandran schrieb:

> Yes, that is a possibility.  Actually, since the error is random it
> might be a little subtler.  update_tk() is run outside of runcode.  So
> this might be breaking thread safety somehow.  I've attached a
> modified Shell.py that tries to do the right thing by calling
> update_tk from inside runcode.  Please let me know if it gets any
> better and if there are no freezes anymore.  This *might* just do the
> trick.

Quick report with this Shell.py you just sent. On a Fedora3 box, I get with 
-wthread:

1. no immediate lockup

2. I can start mayavi from the ipython shell, and load a visualization:

In [1]: import mayavi

In [2]: mv = mayavi.mayavi()

In [3]: mv.load_visualization('heart.mv')

3. BUT, the mayavi renderwindow responds very sluggishly.  Rotating the view 
is very jerky, which it normally isn't if I don't use the -wthread option 
(it's actually smooth as silk).

4. I kept rotating the view, and all of a sudden python coredumped. Mayavi and 
ipython both went up in smoke.  Not good.

This is definitely not user-ready, sorry to say so :(

Cheers,

f