Re: Emacs design and architecture. How about copy-on-write?

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: yantar92@posteo.net,  emacs-devel@gnu.org
> Date: Thu, 21 Sep 2023 21:35:29 +0800
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > Then my question wasn't really answered yet.
> 
> Ah, I now understand what you were asking.
> 
> The variable's global value is modified and thereafter made available to
> all other threads.  If multiple threads perform coinciding alterations
> to the same symbol's value, the machine bus reconciles the conflict by
> selecting a single value.

And when this happens to globals defined in C, is it handled in the
same way? if not, why not?