nac3artiq: update unsendable comment

2021-10-02 18:28:44 +08:00 · 2021-10-02 18:28:44 +08:00 · 3dd916b6ac
commit 3dd916b6ac
parent 8447aa3000
1 changed files with 2 additions and 2 deletions
--- a/nac3artiq/src/lib.rs
+++ b/nac3artiq/src/lib.rs
@ -39,8 +39,8 @@ enum Isa {
    CortexA9,
 }

-// TODO: do we really want unsendable?
-// TopLevelComposer causes a lot of problems for Send.
+// TopLevelComposer is unsendable as it holds the unification table, which is
+// unsendable due to Rc. Arc would cause a performance hit.
 #[pyclass(unsendable, name = "NAC3")]
 struct Nac3 {
    isa: Isa,