Function pop

extern/libcds/cds/container/fcstack.h:200–215

Removes the element on top of the stack \p val takes a copy of top element */

            \p val takes a copy of top element
        */
        bool pop( value_type& val )
        {
            auto pRec = m_FlatCombining.acquire_record();
            pRec->pValPop = &val;

            constexpr_if ( c_bEliminationEnabled )
                m_FlatCombining.batch_combine( op_pop, pRec, *this );
            else
                m_FlatCombining.combine( op_pop, pRec, *this );

            assert( pRec->is_done());
            m_FlatCombining.release_record( pRec );

            m_FlatCombining.internal_statistics().onPop( pRec->bEmpty );
            return !pRec->bEmpty;
        }

        /// Clears the stack
        void clear()