Re: Some experience with the igc branch

[Eli Zaretskii]

> Date: Fri, 27 Dec 2024 17:26:04 +0000
> From: Pip Cet <pipcet@protonmail.com>
> Cc: Gerd Möllmann <gerd.moellmann@gmail.com>, stefankangas@gmail.com, 
> ofv@wanadoo.es, emacs-devel@gnu.org, eller.helmut@gmail.com, acorallo@gnu.org
> 
> "Eli Zaretskii" <eliz@gnu.org> writes:
> 
> >   - Concurrent.  The GC runs in its own thread.  There are no explicit
> >     calls to start GC, and Emacs doesn't have to wait for the GC to
> >     complete.
> >
> > Pip says this is not true?
> 
> I'm a bit confused.  Right now, on scratch/igc, on GNU/Linux, for Emacs
> in batch mode, it isn't technically true.

Then how do you explain the fact that, when igc does GC (as evidenced
by the echo-area messages if you enable garbage-collection-messages),
Emacs is not stopped, as it happens with the old GC?  If GC is done on
the main thread, it means the main thread should stop while GC is in
progress, and yet I don't see it stopping.  What did I miss?