The Observable module extended to DRb. See Observable for details.

Methods
N
Included Modules
Instance Public methods
notify_observers(*arg)

Notifies observers of a change in state. See also Observable#notify_observers

Source: show | on GitHub 

# File lib/drb/observer.rb, line 10
def notify_observers(*arg)
  if defined? @observer_state and @observer_state
    if defined? @observer_peers
      @observer_peers.each do |observer, method|
        begin
          observer.send(method, *arg)
        rescue
          delete_observer(observer)
        end
      end
    end
    @observer_state = false
  end
end