Use SizedQueue to coordinate producer and consumer : SizedQueue « Threads « Ruby

1. Ruby
2. Threads
3. SizedQueue

Use SizedQueue to coordinate producer and consumer

require "thread"

buffer = SizedQueue.new(2)

producer = Thread.new do
  item = 0
  loop do
    sleep rand 0
    puts "Producer makes #{item}"
    buffer.enq item
    item += 1
  end
end

consumer = Thread.new do
  loop do
    sleep (rand 0)+0.9
    item = buffer.deq
    puts "Consumer retrieves #{item}"
    puts "  waiting = #{buffer.num_waiting}"
  end
end

 

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