rb_objspace_reachable_objects_from_root 865 ext/objspace/objspace.c rb_objspace_reachable_objects_from_root(reachable_object_from_root_i, &data); rb_objspace_reachable_objects_from_root 467 ext/objspace/objspace_dump.c rb_objspace_reachable_objects_from_root(root_obj_i, &dc); rb_objspace_reachable_objects_from_root 98 gc.h void rb_objspace_reachable_objects_from_root(void (func)(const char *category, VALUE, void *), void *data);