Method read_raw

imperative/src/impl/ops/opr_attr.cpp:24–28

    ComputingGraph* m_graph;

    void read_raw(void* dest, size_t size) override final {
        mgb_assert(m_pos + size <= m_param.size(), "too many bytes requested");
        memcpy(dest, m_param.data() + m_pos, size);
        m_pos += size;
    }

    std::shared_ptr<HostTensorND> load_tensor() override { mgb_assert(0); }