Re: "Asynchronous Requests from Emacs Dynamic Modules"

[Stefan Monnier]

> With Emacs 28, you can get a file descriptor to a pipe process and
> send arbitrary data there (from arbitrary threads).

Cool, so that takes care of it.

> You'd still need some small protocol (e.g. JSON) to encode/decode
> requests, but with that you can send arbitrary requests
> back asynchronously.

I don't think you need a complex protocol: just stash somewhere (inside
the module data structures) the data you need for the async request,
then send a dummy byte to the pipe.  On the Lisp side, just install
a process-filter which calls back the module to "run any pending async
requests".


        Stefan