thread_data_type 2353 vm.c               if (rb_typeddata_is_kind_of(obj, &thread_data_type)) {
thread_data_type 2366 vm.c               obj = TypedData_Make_Struct(klass, rb_thread_t, &thread_data_type, th);
thread_data_type 2928 vm.c           	th_self = th->self = TypedData_Wrap_Struct(rb_cThread, &thread_data_type, th);