Function try_pop

benchmarks/tbb/concurrent_priority_queue.h:243–248

Gets a reference to and removes highest priority element If a highest priority element was found, sets elem and returns true, otherwise returns false. This operation can be safely used concurrently with other push, try_pop or emplace operations. */

        otherwise returns false.
        This operation can be safely used concurrently with other push, try_pop or emplace operations. */
    bool try_pop(reference elem) {
        cpq_operation op_data(POP_OP);
        op_data.elem = &elem;
        my_aggregator.execute(&op_data);
        return op_data.status==SUCCEEDED;
    }

    //! Clear the queue; not thread-safe
    /** This operation is unsafe if there are pending concurrent operations on the queue.