message: rtabmap: show database size in terminal status info
diff: @@ -416,7 +416,7 @@ void CoreWrapper::onInit()
  if(databasePath_.size())
  {
  - NODELET_INFO("rtabmap: Using database from \"%s\".", databasePath_.c_str());
  + NODELET_INFO("rtabmap: Using database from \"%s\" (%ld MB).", databasePath_.c_str(), UFile::length(databasePath_)/(1024*1024));
  }
  else
  {
  @@ -586,6 +586,8 @@ CoreWrapper::~CoreWrapper()
  nh.deleteParam("is_rtabmap_paused");
  printf("rtabmap: Saving database/long-term memory... (located at %s)\n", databasePath_.c_str());
  + rtabmap_.close();
  + printf("rtabmap: Saving database/long-term memory...done! (located at %s, %ld MB)\n", UFile::length(databasePath_)/(1024*1024), databasePath_.c_str());
  }
  void CoreWrapper::loadParameters(const std::string & configFile, ParametersMap & parameters)
  