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| | # -*- encoding: binary -*-
require 'sleepy_penguin'
require 'sendfile'
# Edge-triggered epoll concurrency model using
# {sleepy_penguin}[http://bogomips.org/sleepy_penguin/] for epoll.
#
# Unlike more portable options like Coolio and EventMachine, this
# is Linux-only, but uses edge-triggering instead of level-triggering,
# so it may perform better in some cases. Coolio and EventMachine have
# better library support and may be widely-used, however.
#
# Consider using XEpoll instead of this if you are using Ruby 1.9,
# it will avoid accept()-scalability issues with many worker processes.
#
# When serving static files, this is extremely unfair and optimized
# for throughput at the expense of fairness. This is not an issue
# if you're not serving static files, or if your working set is
# small enough to aways be in your kernel page cache. This concurrency
# model may starve clients if you have slow disks and large static files.
#
# === RubyGem Requirements
#
# * raindrops 0.6.0 or later
# * sleepy_penguin 2.0.0 or later
# * sendfile 1.1.0 or later
#
module Rainbows::Epoll
# :stopdoc:
include Rainbows::Base
ReRun = []
autoload :Server, 'rainbows/epoll/server'
autoload :Client, 'rainbows/epoll/client'
autoload :ResponsePipe, 'rainbows/epoll/response_pipe'
autoload :ResponseChunkPipe, 'rainbows/epoll/response_chunk_pipe'
class << self
attr_writer :nr_clients
end
def self.loop
begin
EP.wait(nil, 1000) { |_, obj| obj.epoll_run }
while obj = ReRun.shift
obj.epoll_run
end
Rainbows::Epoll::Client.expire
rescue Errno::EINTR
rescue => e
Rainbows::Error.listen_loop(e)
end while Rainbows.tick || @nr_clients.call > 0
end
def init_worker_process(worker)
super
Rainbows::Epoll.const_set :EP, SleepyPenguin::Epoll.new
Rainbows.at_quit { Rainbows::Epoll::EP.close }
Rainbows::Client.__send__ :include, Client
end
def worker_loop(worker) # :nodoc:
init_worker_process(worker)
Server.run
end
# :startdoc:
end
|