Method to_json

src/util/timer.cpp:18–33

    ScopedTimer * active_timer;

    nlohmann::json to_json() const
    {
      auto obj = nlohmann::json::object();

      if (!this->history.empty()) {
        auto history = nlohmann::json::array();

        for (auto const& timer_data : this->history) {
          history.push_back(timer_data.to_json());
        }

        obj["history"] = history;
      }

      return obj;
    }  
  };

  static std::mutex mutex;