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Re: GC and stack marking
From: |
Paul Eggert |
Subject: |
Re: GC and stack marking |
Date: |
Mon, 19 May 2014 11:47:28 -0700 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 |
On 05/19/2014 09:31 AM, Eli Zaretskii wrote:
is it possible that a Lisp object which is no longer referenced by anything
won't be GC'ed because it is marked by mark_stack due to some kind of
coincidence?
Yes. Normally Emacs uses a conservative approach, which means it
occasionally does not collect something that is in fact garbage. See,
for example,
<https://www.gnu.org/software/guile/manual/html_node/Conservative-GC.html>.
how can we make sure this hash-table indeed gets GC'd before we dump Emacs?
We could have the garbage collector treat purify-flag specially, I suppose.
Re: GC and stack marking, Stefan Monnier, 2014/05/20