+
+void
+Job::when_finished (boost::signals2::connection& connection, function<void()> finished)
+{
+ boost::mutex::scoped_lock lm (_state_mutex);
+ if (_state == FINISHED_OK || _state == FINISHED_ERROR || _state == FINISHED_CANCELLED) {
+ finished ();
+ } else {
+ connection = Finished.connect (finished);
+ }
+}