gistfile1.rb

require 'thread'

queue = Queue.new

workers = 10.times.map do |i|
  ts = Thread.new do
    loop {
      queue.pop.call
      Thread.pass
    }
  end
end

loop {
  # p [:size,queue.size]
  Thread.pass unless queue.empty?
  100.times do
    queue << lambda {
      # define work here
      "work"
    }
  end
}