celluloid-condition-var-problem.rb

require 'celluloid'

class Cell
  include Celluloid

  def initialize
    @condition = Celluloid::Condition.new
  end

  def wait(number)
    async.wait_for(number)
  end

  def signal
    @condition.signal
  end

  protected

  def wait_for(number)
    puts "Waiting #{number}"
    @condition.wait
    puts "Waiting complete #{number}"
  end
end

instance = Cell.new
5.times.map { |n| instance.wait(n) }
instance.signal

sleep

=begin
Output:

"""
Waiting 0
Waiting 1
Waiting 2
Waiting 3
Waiting 4
Waiting complete 0
"""
=end