1 # -*- encoding: binary -*-
3 require 'rainbows/error'
8 # global vars because class/instance variables are confusing me :<
9 # this struct is only accessed inside workers and thus private to each
10 # G.cur may not be used in the network concurrency model
11 class State < Struct.new(:alive,:m,:cur,:kato,:server,:tmp,:expire)
13 tmp.chmod(self.m = m == 0 ? 1 : 0)
14 exit!(2) if expire && Time.now >= expire
15 alive && server.master_pid == Process.ppid or quit!
20 self.expire ||= Time.now + (server.timeout * 2.0)
21 server.class.const_get(:LISTENERS).map! { |s| s.close rescue nil }
25 G = State.new(true, 0, 0, 5)
28 require 'rainbows/const'
29 require 'rainbows/http_server'
30 require 'rainbows/http_response'
31 require 'rainbows/base'
32 autoload :AppPool, 'rainbows/app_pool'
33 autoload :DevFdResponse, 'rainbows/dev_fd_response'
37 # Sleeps the current application dispatch. This will pick the
38 # optimal method to sleep depending on the concurrency model chosen
39 # (which may still suck and block the entire process). Using this
40 # with the basic :Rev or :EventMachine models is not recommended.
41 # This should be used within your Rack application.
44 when :FiberPool, :FiberSpawn
45 Rainbows::Fiber.sleep(nr)
47 Rainbows::Fiber::Rev::Sleeper.new(nr)
55 # runs the Rainbows! HttpServer with +app+ and +options+ and does
56 # not return until the server has exited.
57 def run(app, options = {})
58 HttpServer.new(app, options).start.join
61 # returns nil if accept fails
64 rv.fcntl(Fcntl::F_SETFD, Fcntl::FD_CLOEXEC)
66 rescue Errno::EAGAIN, Errno::ECONNABORTED, Errno::EINTR
69 # returns nil if accept fails
71 rv = sock.accept_nonblock
72 rv.fcntl(Fcntl::F_SETFD, Fcntl::FD_CLOEXEC)
74 rescue Errno::EAGAIN, Errno::ECONNABORTED
78 # configures \Rainbows! with a given concurrency model to +use+ and
79 # a +worker_connections+ upper-bound. This method may be called
80 # inside a Unicorn/Rainbows configuration file:
83 # use :Revactor # this may also be :ThreadSpawn or :ThreadPool
84 # worker_connections 400
85 # keepalive_timeout 0 # zero disables keepalives entirely
88 # # the rest of the Unicorn configuration
91 # See the documentation for the respective Revactor, ThreadSpawn,
92 # and ThreadPool classes for descriptions and recommendations for
93 # each of them. The total number of clients we're able to serve is
94 # +worker_processes+ * +worker_connections+, so in the above example
95 # we can serve 8 * 400 = 3200 clients concurrently.
97 # The default is +keepalive_timeout+ is 2 seconds, which should be
98 # enough under most conditions for browsers to render the page and
99 # start retrieving extra elements for. Increasing this beyond 5
100 # seconds is not recommended. Zero disables keepalive entirely
101 # (but pipelining fully-formed requests is still works).
102 def Rainbows!(&block)
103 block_given? or raise ArgumentError, "Rainbows! requires a block"
104 HttpServer.setup(block)
107 # maps models to default worker counts, default worker count numbers are
108 # pretty arbitrary and tuning them to your application and hardware is
110 MODEL_WORKER_CONNECTIONS = {
111 :Base => 1, # this one can't change
116 :RevThreadSpawn => 50,
117 :RevThreadPool => 50,
119 :EventMachineDefer => 50,
124 :RevFiberSpawn => 50,
126 u = model.to_s.gsub(/([a-z0-9])([A-Z0-9])/) { "#{$1}_#{$2.downcase!}" }
127 autoload model, "rainbows/#{u.downcase!}"
129 autoload :Fiber, 'rainbows/fiber' # core class
133 # inject the Rainbows! method into Unicorn::Configurator
134 Unicorn::Configurator.class_eval { include Rainbows }