#ruby实现生产者和消费者代码
 
require 'thread'
queue = Queue.new
consumers = Thread.new do
  5.times do |i|
    obj = queue.pop
    print "consumer :#{i}\n"
    sleep(rand(0.05))
  end
end
 
producters = Thread.new do
  5.times do |i|
    sleep(0.1)
    print "producter : #{i}\n"
    queue.push("Item #{i}")
  end
end
 
producters.join
consumers.join