Method close_read

tools/server/server-models.cpp:1072–1075

        cv.notify_all();
    }
    void close_read() {
        reader_closed.store(true, std::memory_order_relaxed);
        cv.notify_all();
    }
    bool read(T & output, const std::function<bool()> & should_stop) {
        std::unique_lock<std::mutex> lk(mutex);
        constexpr auto poll_interval = std::chrono::milliseconds(500);