1 # -*- encoding: binary -*-
3 # A combination of the Coolio and ThreadPool models. This allows Ruby
4 # Thread-based concurrency for application processing. It DOES NOT
5 # expose a streamable "rack.input" for upload processing within the
6 # app. DevFdResponse should be used with this class to proxy
7 # asynchronous responses. All network I/O between the client and
8 # server are handled by the main thread and outside of the core
9 # application dispatch.
11 # Unlike ThreadPool, Cool.io makes this model highly suitable for
12 # slow clients and applications with medium-to-slow response times
13 # (I/O bound), but less suitable for sleepy applications.
15 # This concurrency model is designed for Ruby 1.9, and Ruby 1.8
16 # users are NOT advised to use this due to high CPU usage.
17 module Rainbows::CoolioThreadPool
19 autoload :Client, 'rainbows/coolio_thread_pool/client'
21 :pool_size => 20, # same default size as ThreadPool (w/o Coolio)
25 def self.setup # :nodoc:
27 DEFAULTS.each { |k,v| o[k] ||= v }
28 Integer === o[:pool_size] && o[:pool_size] > 0 or
29 raise ArgumentError, "pool_size must a be an Integer > 0"
31 include Rainbows::Coolio::Core
33 def init_worker_threads(master, queue) # :nodoc:
34 Rainbows::O[:pool_size].times.map do
38 master << [ client, client.app_response ]
40 Rainbows::Error.listen_loop(e)
46 def init_worker_process(worker) # :nodoc:
48 cloop = Coolio::Loop.default
49 master = Rainbows::Coolio::Master.new(Queue.new).attach(cloop)
50 queue = Client.const_set(:QUEUE, Queue.new)
51 threads = init_worker_threads(master, queue)
52 Watcher.new(threads).attach(cloop)
53 logger.info "CoolioThreadPool pool_size=#{Rainbows::O[:pool_size]}"
57 require 'rainbows/coolio_thread_pool/watcher'