From: Andy Wingo <wingo@pobox.com>
To: Stefan Israelsson Tampe <stefan.itampe@gmail.com>
Cc: 24695@debbugs.gnu.org
Subject: bug#24695: impossible to use weak hash tables inside gc hooks
Date: Wed, 01 Mar 2017 13:49:53 +0100 [thread overview]
Message-ID: <87wpc9go0e.fsf@pobox.com> (raw)
In-Reply-To: <CAGua6m3rdMOsnCNihhMn3Mbn2X9QiU5KFPv4HLdvK8tWbC=PBg@mail.gmail.com> (Stefan Israelsson Tampe's message of "Fri, 14 Oct 2016 20:54:56 +0200")
On Fri 14 Oct 2016 20:54, Stefan Israelsson Tampe <stefan.itampe@gmail.com> writes:
> For more advanced gc concepts it would be nice to keep a set a objects
> in a weak key hash table and at gc loop over the alive ones the
> various gc hooks that is available for the c
> coder.
>
> The problem is that current guile data structure would hang on folding
> because inside the guile weak folder gc is assumed to be
> prevented. Not sure what to do here. This might be a
> feature request or a bug report dependning on how you view it.
What does "at GC" mean? After GC? Before GC is a pretty tense
situation as you can't allocate memory. Also I suspect you could do
this with a weak vector (or other structure with disappearing links) and
a before_gc C hook. WDYT?
I am tempted to just close this one as out of scope for Guile :)
Andy
prev parent reply other threads:[~2017-03-01 12:49 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-14 18:54 bug#24695: impossible to use weak hash tables inside gc hooks Stefan Israelsson Tampe
2017-03-01 12:49 ` Andy Wingo [this message]
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