From: Andy Wingo <wingo@pobox.com>
To: Stefan Israelsson Tampe <stefan.itampe@gmail.com>
Cc: guile-devel <guile-devel@gnu.org>
Subject: Re: GC for logic programming
Date: Wed, 30 Apr 2014 09:40:01 +0200 [thread overview]
Message-ID: <87a9b3tgdq.fsf@pobox.com> (raw)
In-Reply-To: <CAGua6m2f7ruZ43u9RW+7ybReJA-JgJ_8fFAu2TmTSHqWsWa3CQ@mail.gmail.com> (Stefan Israelsson Tampe's message of "Wed, 30 Apr 2014 08:07:58 +0200")
On Wed 30 Apr 2014 08:07, Stefan Israelsson Tampe <stefan.itampe@gmail.com> writes:
> It turns out that it is not possible as far as I can see to enable such
> a feature without modifying bdw-gc. The basic need is to know if objects
> have been marked through normal code or not but still keep the objects
> from gc. The reason is that the sweep phase has to be postponed to
> places in the code where it is safe to modify the stack.
I have no idea what this means. However what if you attach a finalizer
to them, and make the references from the stack weak? The finalizer can
decide whether they stick around or not. Or put them in a guardian and
pump the guardian from somewhere that it's safe.
Andy
--
http://wingolog.org/
prev parent reply other threads:[~2014-04-30 7:40 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-30 6:07 GC for logic programming Stefan Israelsson Tampe
2014-04-30 7:40 ` Andy Wingo [this message]
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