dRuby経由で生成されたオブジェクトのinitializeメソッドがいつどこで呼び出されるかについて。

c.rb

require 'drb/drb'
require_relative 'object'
require_relative 'foo'

DRb.start_service
foo_s = DRbObject.new_with_uri('druby://localhost:8787')
p foo_s
p(foo = foo_s.foo(123))

foo.rb

class Foo
  def initialize(x)
    @x = x
    @created_at = Time.now
  end
end

object.rb

class Object
  alias_method :initialize_orig, :initialize
  def initialize(*args)
    @created_at = Time.now
    p([:Object_initialize, self, @created_at])
    initialize_orig(*args)
  end
end

class DRbObject
  alias_method :initialize_orig, :initialize
  def initialize(*args)
    @created_at = Time.now
    p([:DRbObject_initialize, self.class, @created_at])
    initialize_orig(*args)
  end
end

s.rb

require 'drb/drb'
require_relative 'object'
require_relative 'foo'
class FooServer
  def foo(x)
    obj = Foo.new(x)
    p([:FooServer_foo, Time.now, obj])
    obj
  end
end
foo_s = FooServer.new
DRb.start_service('druby://localhost:8787', foo_s)
DRb.thread.join