Method create

src/backend/cpu/queue.hpp:54–57

    event_impl &operator=(int val) noexcept { return *this; }

    int create() {
        AF_ERROR("Incorrectly configured", AF_ERR_INTERNAL);
        return 0;
    }

    int mark(queue_impl &queue) {
        AF_ERROR("Incorrectly configured", AF_ERR_INTERNAL);