From: "ara.t.howard" <ara.t.howard@...>
Date: 2008-04-16T14:24:01+09:00
Subject: Re: Parallel for loop


On Apr 15, 2008, at 10:55 PM, Fredrik wrote:
> Actually, I'll change it a bit. I added Process.waitall since there
> are otherwise some dead(?) processes left.
>

indeed, and you can blow up in the child and not know.  read this code  
to see how to handle that:

http://codeforpeople.com/lib/ruby/open4/open4-0.9.6/lib/open4.rb

the bit about EOFError

it's damn tricky - it *excepts* get get an exception marshaled up a  
dedicated pipe, if this does *not* occur we know the child process  
started successfully.  you can adapt.

cheers.

a @ http://codeforpeople.com/
--
we can deny everything, except that we have the possibility of being  
better. simply reflect on that.
h.h. the 14th dalai lama