Re: Re: [Image-SIG] PIL and multithreading - is it possible?

[meyer at mesw.de]

Jeff,

many thanks for the info. I'll try to upgrade my version. Just out of
curiousity: Does anyone know which changes have been made exactly (e.g.
still have the patch Kevin submitted)?


Markus

Jeff Epler <jepler at unpythonic.net> schrieb am 12.11.2004, 16:32:16:
> Some of what you want will be in PIL 1.1.5.
> 
> http://effbot.org/zone/pil-changes-115.htm
> + Improved support for applications using multiple threads; PIL
>   now releases the global interpreter lock for many CPU-intensive
>   operations (based on work by Kevin Cazabon).
> 
> An image viewer that I'm playing with in my spare time has two threads:
> the first is the user interface, and the second performs all image
> operations.  This actually works pretty well under 1.1.5b1.
> 
> I'm not sure whether the lock is released for loading images, but it
> does seem to be released for scaling operations.
> 
> Jeff