LttvTraceHookByFacility *thf = (LttvTraceHookByFacility*)hook_data;
EventsRequest *events_request = (EventsRequest*)thf->hook_data;
ControlFlowData *control_flow_data = events_request->viewer_data;
LttvTraceHookByFacility *thf = (LttvTraceHookByFacility*)hook_data;
EventsRequest *events_request = (EventsRequest*)thf->hook_data;
ControlFlowData *control_flow_data = events_request->viewer_data;