Markus,
> "Possible" or "Allowed"? ;-)

Both, I think. If I am not mistaken, it was some Apple guy (David Duncan?) who 
pointed out the role of the runloop. I therefore take for granted that, if it 
is not "allowed", it must at least be "tolerated".

> It is also possible to use Cocoa UI objects from different threads; at least 
> if you do it carefully, you might get away with that. However, I doubt this 
> is really allowed and if it stops working, Apple will say "We told you not 
> to...".  Considering that the future of processing is more and more cores 
> (virtual or physical ones), it is pretty unfortunate that Cocoa is so little 
> thread-safe and that UI is still often bound to main thread.

I think Apple is well aware of that. I'd bet this is one of their priorities 
for MacOS 10.7... Just a wild guess, though.

Vincent

Sent from my iPhone4


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