85 lines
2.1 KiB
Ruby
85 lines
2.1 KiB
Ruby
#--
|
|
#
|
|
# Author:: Francis Cianfrocca (gmail: blackhedd)
|
|
# Homepage:: http://rubyeventmachine.com
|
|
# Date:: 25 Aug 2007
|
|
#
|
|
# See EventMachine and EventMachine::Connection for documentation and
|
|
# usage examples.
|
|
#
|
|
#----------------------------------------------------------------------------
|
|
#
|
|
# Copyright (C) 2006-07 by Francis Cianfrocca. All Rights Reserved.
|
|
# Gmail: blackhedd
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of either: 1) the GNU General Public License
|
|
# as published by the Free Software Foundation; either version 2 of the
|
|
# License, or (at your option) any later version; or 2) Ruby's License.
|
|
#
|
|
# See the file COPYING for complete licensing information.
|
|
#
|
|
#---------------------------------------------------------------------------
|
|
#
|
|
#
|
|
|
|
module EventMachine
|
|
# Support for Erlang-style processes.
|
|
#
|
|
class SpawnedProcess
|
|
# Send a message to the spawned process
|
|
def notify *x
|
|
me = self
|
|
EM.next_tick {
|
|
# A notification executes in the context of this
|
|
# SpawnedProcess object. That makes self and notify
|
|
# work as one would expect.
|
|
#
|
|
y = me.call(*x)
|
|
if y and y.respond_to?(:pull_out_yield_block)
|
|
a,b = y.pull_out_yield_block
|
|
set_receiver a
|
|
self.notify if b
|
|
end
|
|
}
|
|
end
|
|
alias_method :resume, :notify
|
|
alias_method :run, :notify # for formulations like (EM.spawn {xxx}).run
|
|
|
|
def set_receiver blk
|
|
(class << self ; self ; end).class_eval do
|
|
remove_method :call if method_defined? :call
|
|
define_method :call, blk
|
|
end
|
|
end
|
|
|
|
end
|
|
|
|
# @private
|
|
class YieldBlockFromSpawnedProcess
|
|
def initialize block, notify
|
|
@block = [block,notify]
|
|
end
|
|
def pull_out_yield_block
|
|
@block
|
|
end
|
|
end
|
|
|
|
# Spawn an erlang-style process
|
|
def self.spawn &block
|
|
s = SpawnedProcess.new
|
|
s.set_receiver block
|
|
s
|
|
end
|
|
|
|
# @private
|
|
def self.yield &block
|
|
return YieldBlockFromSpawnedProcess.new( block, false )
|
|
end
|
|
|
|
# @private
|
|
def self.yield_and_notify &block
|
|
return YieldBlockFromSpawnedProcess.new( block, true )
|
|
end
|
|
end
|