Method empty

native/cocos/base/ThreadPool.h:169–173

        }

        bool empty() const {
            auto thiz = const_cast<ThreadSafeQueue *>(this);
            std::unique_lock<std::mutex> lock(thiz->mutex);
            return this->q.empty();
        }

        size_t size() const {
            auto thiz = const_cast<ThreadSafeQueue *>(this);