Re: MPS signals and Emacs

[Eli Zaretskii]

> 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 12:22:25 +0200
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > Doesn't copying GC work by copying live objects to a new memory
> > region, and then freeing the old region?  If so, if some objects
> > cannot be moved, how can the old region be freed?
> 
> Yes. A simple precise GC (no support for ambiguous references) might
> work with 2 regions, which are usually called to-space and froms-space.
> When a GC happens, everything live is copied from from-space to
> to-space. At the end, to-space has all live objects, and both spaces can
> switch roles in the next GC.

Btw, does this mean that a copying GC will make the memory used for
live objects roughly doubled in size?