Method set_opr_destruct_callback

dnn/include/megdnn/handle.h:125–127

! * \brief set a callback to be invoked when an operator is destructed * \param[in,out] cb the callback function; it would be set to the * previous callback function */

     *      previous callback function
     */
    void set_opr_destruct_callback(thin_function<void(OperatorBase*)>& cb) {
        cb.swap(m_on_opr_destructed);
    }

    MGE_WIN_DECLSPEC_FUC void on_opr_destructed(OperatorBase* opr);