if (_process_graph) {
DEBUG_TRACE(DEBUG::ProcessThreads,"calling graph/no-roll\n");
_process_graph->routes_no_roll( nframes, _transport_frame, end_frame, non_realtime_work_pending(), declick);
if (_process_graph) {
DEBUG_TRACE(DEBUG::ProcessThreads,"calling graph/no-roll\n");
_process_graph->routes_no_roll( nframes, _transport_frame, end_frame, non_realtime_work_pending(), declick);