.. _program_listing_file_processors_eventlogger_eventlogger.cpp:

Program Listing for File eventlogger.cpp
========================================

|exhale_lsh| :ref:`Return to documentation for file <file_processors_eventlogger_eventlogger.cpp>` (``processors/eventlogger/eventlogger.cpp``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   // ---------------------------------------------------------------------
   // This file is part of falcon-core.
   //
   // Copyright (C) 2015, 2016, 2017 Neuro-Electronics Research Flanders
   //
   // Falcon-server is free software: you can redistribute it and/or modify
   // it under the terms of the GNU General Public License as published by
   // the Free Software Foundation, either version 3 of the License, or
   // (at your option) any later version.
   //
   // Falcon-server is distributed in the hope that it will be useful,
   // but WITHOUT ANY WARRANTY; without even the implied warranty of
   // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   // GNU General Public License for more details.
   //
   // You should have received a copy of the GNU General Public License
   // along with falcon-core. If not, see <http://www.gnu.org/licenses/>.
   // ---------------------------------------------------------------------
   
   #include "eventlogger.hpp"
   #include <thread>
   
   EventLogger::EventLogger() : IProcessor() {
     add_option("target event", target_event_, "The event to be logged.");
   }
   
   void EventLogger::CreatePorts() {
     event_port_ = create_input_port<EventType>(
         EVENTDATA, EventType::Capabilities(), PortInPolicy(SlotRange(1)));
   }
   
   void EventLogger::Process(ProcessingContext &context) {
     EventType::Data *data;
   
     while (!context.terminated()) {
       if (!event_port_->slot(0)->RetrieveData(data)) {
         break;
       }
   
       ++event_counter_.all_received;
   
       if (*data == target_event_()) {
         ++event_counter_.target;
         LOG(UPDATE) << name() << ": received target event " << data->event()
                     << ".";
       } else {
         ++event_counter_.non_target;
         LOG(UPDATE) << name() << ": skipped event " << data->event() << ".";
       }
       event_port_->slot(0)->ReleaseData();
     }
   }
   
   void EventLogger::Postprocess(ProcessingContext &context) {
     LOG(UPDATE) << name() << ". Received " << event_counter_.all_received
                 << " events, of which " << event_counter_.target
                 << " were targets.";
     if (event_counter_.consistent_counters()) {
       LOG(UPDATE) << name() << ". Counters are consistent.";
     }
     event_counter_.reset();
   }
   
   REGISTERPROCESSOR(EventLogger)