Re: Grand Central

[Pete French]

> http://images.apple.com/macosx/technology/docs/GrandCentral_TB_brief_20090608.pdf

Interesting - that ^{ syntax to describe a block is somewhat ugly, and it doesnt
give any deats of how you associate data with a block (which is necessary if
you want to get rid of locks).

It still all looks a bit heavyweight to me - I am still waiting for a 
parallelism
model as easy to use as OCCAM ... people really threw the baby out with the 
bathwater
there when the transputer died sadly :-(

> There is no API documentation yet, but it seems that it basically  
> spawns a set of threads at different priorities and uses them to run  
> blocks from various queues.  Lots of hype, but it doesn't seem to give  

I can't work out if GCD is supposed to be an extension for OSX or an extension
to Objective-C itself. Obviously the block syntax requiures a language 
extension,
but how do the bits fit together from there onward ?

-pete.