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| | # -*- encoding: binary -*-
require 'unicorn'
require 'rainbows/error'
require 'fcntl'
module Rainbows
# global vars because class/instance variables are confusing me :<
# this struct is only accessed inside workers and thus private to each
# G.cur may not be used in the network concurrency model
class State < Struct.new(:alive,:m,:cur,:kato,:server,:tmp,:expire)
def tick
tmp.chmod(self.m = m == 0 ? 1 : 0)
exit!(2) if expire && Time.now >= expire
alive && server.master_pid == Process.ppid or quit!
end
def quit!
self.alive = false
self.expire ||= Time.now + (server.timeout * 2.0)
server.class.const_get(:LISTENERS).map! { |s| s.close rescue nil }
false
end
end
G = State.new(true, 0, 0, 5)
O = {}
require 'rainbows/const'
require 'rainbows/http_server'
require 'rainbows/http_response'
require 'rainbows/base'
autoload :AppPool, 'rainbows/app_pool'
autoload :DevFdResponse, 'rainbows/dev_fd_response'
class << self
# Sleeps the current application dispatch. This will pick the
# optimal method to sleep depending on the concurrency model chosen
# (which may still suck and block the entire process). Using this
# with the basic :Rev or :EventMachine models is not recommended.
# This should be used within your Rack application.
def sleep(nr)
case G.server.use
when :FiberPool, :FiberSpawn
Rainbows::Fiber.sleep(nr)
when :RevFiberSpawn
Rainbows::Fiber::Rev::Sleeper.new(nr)
when :Revactor
Actor.sleep(nr)
else
Kernel.sleep(nr)
end
end
# runs the Rainbows! HttpServer with +app+ and +options+ and does
# not return until the server has exited.
def run(app, options = {})
HttpServer.new(app, options).start.join
end
# returns nil if accept fails
def sync_accept(sock)
rv = sock.accept
rv.fcntl(Fcntl::F_SETFD, Fcntl::FD_CLOEXEC)
rv
rescue Errno::EAGAIN, Errno::ECONNABORTED, Errno::EINTR
end
# returns nil if accept fails
def accept(sock)
rv = sock.accept_nonblock
rv.fcntl(Fcntl::F_SETFD, Fcntl::FD_CLOEXEC)
rv
rescue Errno::EAGAIN, Errno::ECONNABORTED
end
end
# configures \Rainbows! with a given concurrency model to +use+ and
# a +worker_connections+ upper-bound. This method may be called
# inside a Unicorn/Rainbows configuration file:
#
# Rainbows! do
# use :Revactor # this may also be :ThreadSpawn or :ThreadPool
# worker_connections 400
# keepalive_timeout 0 # zero disables keepalives entirely
# end
#
# # the rest of the Unicorn configuration
# worker_processes 8
#
# See the documentation for the respective Revactor, ThreadSpawn,
# and ThreadPool classes for descriptions and recommendations for
# each of them. The total number of clients we're able to serve is
# +worker_processes+ * +worker_connections+, so in the above example
# we can serve 8 * 400 = 3200 clients concurrently.
#
# The default is +keepalive_timeout+ is 2 seconds, which should be
# enough under most conditions for browsers to render the page and
# start retrieving extra elements for. Increasing this beyond 5
# seconds is not recommended. Zero disables keepalive entirely
# (but pipelining fully-formed requests is still works).
def Rainbows!(&block)
block_given? or raise ArgumentError, "Rainbows! requires a block"
HttpServer.setup(block)
end
# maps models to default worker counts, default worker count numbers are
# pretty arbitrary and tuning them to your application and hardware is
# highly recommended
MODEL_WORKER_CONNECTIONS = {
:Base => 1, # this one can't change
:Revactor => 50,
:ThreadSpawn => 30,
:ThreadPool => 20,
:Rev => 50,
:RevThreadSpawn => 50,
:RevThreadPool => 50,
:EventMachine => 50,
:EventMachineDefer => 50,
:FiberSpawn => 50,
:FiberPool => 50,
:ActorSpawn => 50,
:NeverBlock => 50,
:RevFiberSpawn => 50,
}.each do |model, _|
u = model.to_s.gsub(/([a-z0-9])([A-Z0-9])/) { "#{$1}_#{$2.downcase!}" }
autoload model, "rainbows/#{u.downcase!}"
end
autoload :Fiber, 'rainbows/fiber' # core class
end
# inject the Rainbows! method into Unicorn::Configurator
Unicorn::Configurator.class_eval { include Rainbows }
|