XBT_PUBLIC void* sg_actor_self_data();
XBT_PUBLIC void sg_actor_self_data_set(void* data);
XBT_PUBLIC void sg_actor_self_execute(double flops);
-XBT_PUBLIC void sg_actor_ref(sg_actor_t actor);
-XBT_PUBLIC void sg_actor_unref(sg_actor_t actor);
+XBT_PUBLIC void sg_actor_ref(const_sg_actor_t actor);
+XBT_PUBLIC void sg_actor_unref(const_sg_actor_t actor);
XBT_PUBLIC void* sg_actor_data(const_sg_actor_t actor);
XBT_PUBLIC void sg_actor_data_set(sg_actor_t actor, void* userdata);