Re: MPS: weak hash tables

[Pip Cet <pipcet@protonmail.com>]

On Saturday, July 6th, 2024 at 09:47, Helmut Eller <eller.helmut@gmail.com> wrote:
> I think finalize_bignum is ever called for something like this:
> 
> ./src/emacs -Q -batch -eval '
> (dotimes (_ 10000000) (set (quote foo) (ash most-positive-fixnum 10000)))'

maybe_garbage_collect() is a nop with MPS, we should probably change that. Needs to happen only some of the time, though, or we'll spend too much time polling for messages (I just tried that, takes forever to build but the code runs with apparently constant memory consumption).

Note that the need to finalize bignums could also be avoided by making GMP use MPS allocation and tracing the limbs. I don't think we should, though, because that'd be messing with GMP internals.

Pip