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