Method set_async_callback

lite/src/mge/network_impl.cpp:218–226

set the callback in async model

//! set the callback in async model
void NetworkImplDft::set_async_callback(const AsyncCallback& callback) {
    LITE_ASSERT(!m_is_cpu_inplace_mode, "cpu inplace mode not support async mode");
    LITE_ASSERT(
            m_user_config->device_type == LiteDeviceType::LITE_CPU ||
                    m_user_config->device_type == LiteDeviceType::LITE_CUDA,
            "Now only cpu and cuda>10.0 support async mode");
    m_async = true;
    m_async_callback = std::move(callback);
}

void NetworkImplDft::make_output_spec() {
    m_output_spec.clear();