thread_pool

This code is still pretty early, and not yet used in production. That said, I am interested in feedback. You can send me a message on GitHub's internal messaging system ( http://github.com/inbox/new/fizx ).

A simple executor-style ThreadPool for Ruby (with tests, yay!)

Usage:

require "rubygems"
require "thread_pool"
pool = ThreadPool.new(threads = 10)
pool.execute { puts "I'm writing from a thread" }
pool.join

It's often useful to make sure that the properties of Ruby's blocks don't bite you. The following code will usually print three nils, because n keeps changing.

pool = ThreadPool.new(threads = 10)
numbers = [1, 2, 3]
while n = numbers.shift
	pool.execute { puts n.inspect }
end
pool.join

Passing arguments to execute avoids this. i.e.:

pool = ThreadPool.new(threads = 10)
numbers = [1, 2, 3]
while n = numbers.shift
	pool.execute(n) {|local| puts local.inspect }
end
pool.join