class EventMachine::Selectable

def initialize io
  @io = io
  @uuid = UuidGenerator.generate
  @is_server = false
  @last_activity = Reactor.instance.current_loop_time
  if defined?(Fcntl::F_GETFL)
    m = @io.fcntl(Fcntl::F_GETFL, 0)
    @io.fcntl(Fcntl::F_SETFL, Fcntl::O_NONBLOCK | m)
  else
    # Windows doesn't define F_GETFL.
    # It's not very reliable about setting descriptors nonblocking either.
    begin
      s = Socket.for_fd(@io.fileno)
      s.fcntl( Fcntl::F_SETFL, Fcntl::O_NONBLOCK )
    rescue Errno::EINVAL, Errno::EBADF
      warn "Serious error: unable to set descriptor non-blocking"
    end
  end
  # TODO, should set CLOEXEC on Unix?
  @close_scheduled = false
  @close_requested = false
  se = self; @io.instance_eval { @my_selectable = se }
  Reactor.instance.add_selectable @io
end