That is unfortunate. I was assuming that at least thread primitives can be
made thread-safe.

On Sat, Oct 31, 2020 at 11:14 AM Eli Zaretskii <eliz@gnu.org> wrote:

> > From: yyoncho <yyoncho@gmail.com>
> > Date: Sat, 31 Oct 2020 10:02:41 +0200
> > Cc: Zhu Zihao <all_but_last@163.com>, ak@akirakyle.com,
> >       emacs-devel <emacs-devel@gnu.org>
> >
> > Allowing condition-notify call from non-elisp threads would solve the
> problem as well.
>
> I don't see how that could be possible without redesigning the entire
> Lisp threads machinery.
>
> In general, no part of the Lisp interpreter -- and that includes the
> Lisp thread related functions -- can ever safely run from an async
> non-Lisp thread.
>