Method keyframe_is_queued

src/PLPSLAM/global_optimization_module.cc:185–189

    }

    bool global_optimization_module::keyframe_is_queued() const
    {
        std::lock_guard<std::mutex> lock(mtx_keyfrm_queue_);
        return (!keyfrms_queue_.empty());
    }

    void global_optimization_module::correct_loop()
    {