Method pop

native/cocos/base/ThreadPool.h:160–167

deletes the retrieved element, do not use for non integral types

        // deletes the retrieved element, do not use for non integral types
        bool pop(T &v) {
            std::unique_lock<std::mutex> lock(this->mutex);
            if (this->q.empty())
                return false;
            v = this->q.front();
            this->q.pop();
            return true;
        }

        bool empty() const {
            auto thiz = const_cast<ThreadSafeQueue *>(this);