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From: Eli Zaretskii <eliz@gnu.org>
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Subject: Re: Opportunistic GC
Date: Thu, 11 Mar 2021 10:37:43 +0200
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> From: Pip Cet <pipcet@gmail.com>
> Date: Thu, 11 Mar 2021 07:55:30 +0000
> Cc: Stefan Monnier <monnier@iro.umontreal.ca>, Andrea Corallo <akrl@sdf.org>, emacs-devel@gnu.org
> 
> > Doesn't that mean you'd need to
> > call pselect?
> 
> Not at present, no. But even if I did, how would that make mutexes relevant?

See thread_select.  We don't call pselect directly.