Function empty

extern/libcds/cds/container/fcpriority_queue.h:264–270

Checks if the priority queue is empty If the combining is in process the function waits while combining done. */

            If the combining is in process the function waits while combining done.
        */
        bool empty()
        {
            bool bRet = false;
            auto const& pq = m_PQueue;
            m_FlatCombining.invoke_exclusive( [&pq, &bRet]() { bRet = pq.empty(); } );
            return bRet;
        }

        /// Internal statistics
        stat const& statistics() const