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| | # -*- encoding: binary -*-
# A combination of the Coolio and ThreadPool models. This allows Ruby
# Thread-based concurrency for application processing. It DOES NOT
# expose a streamable "rack.input" for upload processing within the
# app. DevFdResponse should be used with this class to proxy
# asynchronous responses. All network I/O between the client and
# server are handled by the main thread and outside of the core
# application dispatch.
#
# Unlike ThreadPool, Cool.io makes this model highly suitable for
# slow clients and applications with medium-to-slow response times
# (I/O bound), but less suitable for sleepy applications.
#
# This concurrency model is designed for Ruby 1.9, and Ruby 1.8
# users are NOT advised to use this due to high CPU usage.
module Rainbows::CoolioThreadPool
# :stopdoc:
DEFAULTS = {
:pool_size => 20, # same default size as ThreadPool (w/o Coolio)
}
#:startdoc:
def self.setup # :nodoc:
o = Rainbows::O
DEFAULTS.each { |k,v| o[k] ||= v }
Integer === o[:pool_size] && o[:pool_size] > 0 or
raise ArgumentError, "pool_size must a be an Integer > 0"
end
include Rainbows::Coolio::Core
def init_worker_threads(master, queue) # :nodoc:
Rainbows::O[:pool_size].times.map do
Thread.new do
begin
client = queue.pop
master << [ client, client.app_response ]
rescue => e
Rainbows::Error.listen_loop(e)
end while true
end
end
end
def init_worker_process(worker) # :nodoc:
super
cloop = Coolio::Loop.default
master = Rainbows::Coolio::Master.new(Queue.new).attach(cloop)
queue = Client.const_set(:QUEUE, Queue.new)
threads = init_worker_threads(master, queue)
Watcher.new(threads).attach(cloop)
logger.info "CoolioThreadPool pool_size=#{Rainbows::O[:pool_size]}"
end
end
# :enddoc:
require 'rainbows/coolio_thread_pool/client'
require 'rainbows/coolio_thread_pool/watcher'
|