module Servolux::Threaded

def wait( limit = nil )


number of iterations has passed since this method was called.
does not return until the activity thread has stopped, or a specific
method will return without taking any action. Otherwise, this method
Wait on the activity thread. If the thread is already stopped, this 
def wait( limit = nil )
  return self unless _activity_thread.running?
  initial_iterations = @_activity_thread.iterations
  loop {
    break unless @_activity_thread.running?
    break if limit and @_activity_thread.iterations > ( initial_iterations + limit )
    Thread.pass
  }
end