1 # -*- encoding: binary -*-
3 Revactor::VERSION >= '0.1.5' or abort 'revactor 0.1.5 is required'
5 # Enables use of the Actor model through {Revactor}[http://revactor.org]
8 # \Revactor dormant upstream, so the use of this is NOT recommended for
11 # It spawns one long-lived Actor for every listen socket in the process
12 # and spawns a new Actor for every client connection accept()-ed.
13 # +worker_connections+ will limit the number of client Actors we have
14 # running at any one time.
16 # Applications using this model are required to be reentrant, but do
17 # not have to worry about race conditions unless they use threads
18 # internally. \Rainbows! does not spawn threads under this model.
19 # Multiple instances of the same app may run in the same address space
20 # sequentially (but at interleaved points). Any network dependencies
21 # in the application using this model should be implemented using the
22 # \Revactor library as well, to take advantage of the networking
23 # concurrency features this model provides.
25 # === RubyGem Requirements
26 # * revactor 0.1.5 or later
27 module Rainbows::Revactor
28 autoload :Client, 'rainbows/revactor/client'
29 autoload :Proxy, 'rainbows/revactor/proxy'
31 include Rainbows::Base
33 # runs inside each forked worker, this sits around and waits
34 # for connections and doesn't die until the parent dies (or is
35 # given a INT, QUIT, or TERM signal)
36 def worker_loop(worker) #:nodoc:
38 init_worker_process(worker)
40 limit = worker_connections
41 actor_exit = Case[:exit, Actor, Object]
43 revactorize_listeners.each do |l,close,accept|
45 Actor.current.trap_exit = true
46 l.controller = l.instance_variable_set(:@receiver, Actor.current)
49 l.disable if l.enabled?
50 logger.info "busy: clients=#{nr} >= limit=#{limit}"
53 f.when(actor_exit) { nr -= 1 }
54 f.after(0.01) {} # another listener could've gotten an exit
58 l.enable unless l.enabled?
61 f.when(actor_exit) { nr -= 1 }
62 f.when(accept) do |_, _, s|
64 Actor.spawn_link(s) { |c| Client.new(c).process_loop }
68 Rainbows::Error.listen_loop(e)
69 end while Rainbows.alive
72 f.when(actor_exit) { nr -= 1 }
77 Actor.sleep 1 while Rainbows.tick || nr > 0
79 # ignore, let another worker process take it
82 def revactorize_listeners #:nodoc:
86 l = Revactor::TCP.listen(s, nil)
87 [ l, T[:tcp_closed, Revactor::TCP::Socket],
88 T[:tcp_connection, l, Revactor::TCP::Socket] ]
90 l = Revactor::UNIX.listen(s)
91 [ l, T[:unix_closed, Revactor::UNIX::Socket ],
92 T[:unix_connection, l, Revactor::UNIX::Socket] ]