-XBT_ATTRIB_DEPRECATED_v328("Please use sg_host_set_data()") XBT_PUBLIC
- void sg_host_user_set(sg_host_t host, void* userdata);
-XBT_ATTRIB_DEPRECATED_v328("Please use sg_host_set_data(h, NULL)") XBT_PUBLIC void sg_host_user_destroy(sg_host_t host);