code: public void dump() throws InvocationException {
  		if (_updated) {
  			List<Counter> counters = this.getAll();
  			save(counters);
  
  			synchronized (_lock) {
  				_updated = false;
  				_lastDumpTime = System.currentTimeMillis();
  			}
  		}
  	}
docs: Dumps (saves) the current values of counters.
  @throws InvocationException when error occured.
  
  @see #save(List)