From: Aaron Patterson <aaron@...>
Date: 2009-07-02T06:15:33+09:00
Subject: Re: ruby threads

On Thu, Jul 02, 2009 at 05:44:00AM +0900, Vlad Smith wrote:
> Hi guys! Hope you`ll find some time to assist with any ideas
> 
> i have an array of links and a number of steps that needs to be done to
> each of those links.
> 
> there are always the same amount of links in array..so basically i can
> do everything manually
> 
> i was wondering how can i create the new thread for processing each of
> those links , maybe there`s a way of doing something like this :
> 
> array.each do |link|
>   a = Thread.new {....}
>   a.join
> end

Your code won't run anything in parallel.  Thread#join will wait until
the thread is finished.

Try mapping your array to a list of threads, then iterating over that
list calling join:

  array.map { |link|
    Thread.new(link) { |l| ... }
  }.each { |thread| thread.join }

-- 
Aaron Patterson
http://tenderlovemaking.com/