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Re: MPS signals and Emacs


From: Eli Zaretskii
Subject: Re: MPS signals and Emacs
Date: Mon, 22 Apr 2024 15:01:59 +0300

> From: Gerd Möllmann <gerd.moellmann@gmail.com>
> Cc: eggert@cs.ucla.edu,  eller.helmut@gmail.com,  emacs-devel@gnu.org
> Date: Mon, 22 Apr 2024 13:00:37 +0200
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > And why move P to to-space in the first place, when all of its objects
> > except O are already copied to to-space?
> 
> Not sure if I understand... Because of O? O is live, and if P would
> remain in from-space, O's memory could be overwritten by the next GC,
> where P would be considered part of to-space if we don't prevent it.

So we will now have in to-space 2 copies of all the objects that were
in P and could be copied to to-space?  IOW, instead of a single page
P, we now have 2 pages: one that has all the objects in P except O,
and another with O?



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