Received: (at 24695) by debbugs.gnu.org; 1 Mar 2017 12:50:05 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Wed Mar 01 07:50:05 2017 Received: from localhost ([127.0.0.1]:32942 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1cj3hl-0006Y3-JF for submit <at> debbugs.gnu.org; Wed, 01 Mar 2017 07:50:05 -0500 Received: from pb-sasl1.pobox.com ([64.147.108.66]:64122 helo=sasl.smtp.pobox.com) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <wingo@HIDDEN>) id 1cj3hk-0006Xv-8e for 24695 <at> debbugs.gnu.org; Wed, 01 Mar 2017 07:50:04 -0500 Received: from sasl.smtp.pobox.com (unknown [127.0.0.1]) by pb-sasl1.pobox.com (Postfix) with ESMTP id C06D75E718; Wed, 1 Mar 2017 07:50:02 -0500 (EST) DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=pobox.com; h=from:to:cc :subject:references:date:in-reply-to:message-id:mime-version :content-type; s=sasl; bh=J40oQJD60zc3KxSuwIS7ICmaY8g=; b=oEaHEy X9y9qKL4Mnjj73Z0OtoimknGdd5ONyLagXdVtEiZXuu7rd+oE41p2Jrr0anu1Kf5 xylRoaT1Zob5WFAPD6+HLRjUbg/tSrSGil0b+8m+2mVWNH0DrnQA1fMk+eo/RuYg LIZRBCGPxOC+/S+zf4YntUd09xTQS68KdTGSM= DomainKey-Signature: a=rsa-sha1; c=nofws; d=pobox.com; h=from:to:cc :subject:references:date:in-reply-to:message-id:mime-version :content-type; q=dns; s=sasl; b=jYWjrFCsgh9eDTdxA3BtJAs8bNHsLPa9 2/TApbDF2/OpM2uphbL8iM6DBjODEEluAV2yGtN65asANC9+TfZ1qI7anZnZ8sLN q+47xFQ32DcUJQlXtpJtnW2YuGEVdIJnD809E0EwZyqeQfIrBxl/1CeeM3p4UpoO aqOQb0mQjMw= Received: from pb-sasl1.nyi.icgroup.com (unknown [127.0.0.1]) by pb-sasl1.pobox.com (Postfix) with ESMTP id 76B1A5E715; Wed, 1 Mar 2017 07:50:02 -0500 (EST) Received: from clucks (unknown [109.190.228.233]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by pb-sasl1.pobox.com (Postfix) with ESMTPSA id 36CE45E714; Wed, 1 Mar 2017 07:50:00 -0500 (EST) From: Andy Wingo <wingo@HIDDEN> To: Stefan Israelsson Tampe <stefan.itampe@HIDDEN> Subject: Re: bug#24695: impossible to use weak hash tables inside gc hooks References: <CAGua6m3rdMOsnCNihhMn3Mbn2X9QiU5KFPv4HLdvK8tWbC=PBg@HIDDEN> Date: Wed, 01 Mar 2017 13:49:53 +0100 In-Reply-To: <CAGua6m3rdMOsnCNihhMn3Mbn2X9QiU5KFPv4HLdvK8tWbC=PBg@HIDDEN> (Stefan Israelsson Tampe's message of "Fri, 14 Oct 2016 20:54:56 +0200") Message-ID: <87wpc9go0e.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Pobox-Relay-ID: 9581AA8E-FE7D-11E6-BBA9-B667064AB293-02397024!pb-sasl1.pobox.com X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 24695 Cc: 24695 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: 0.0 (/) On Fri 14 Oct 2016 20:54, Stefan Israelsson Tampe <stefan.itampe@HIDDEN> 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
bug-guile@HIDDEN:bug#24695; Package guile.
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charset=UTF-8 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. Regards --001a114a04b02b2e24053ed7c30a Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr">For more advanced gc concepts it would be nice to keep a s= et a objects in a weak key hash table and at gc loop over the alive ones th= e various gc hooks that is available for the c coder.<div><br></div><div>Th= e problem is that current guile data structure would hang on folding becaus= e 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.</div><div><br></div><div>Regards</div></div> --001a114a04b02b2e24053ed7c30a--
Stefan Israelsson Tampe <stefan.itampe@HIDDEN>:bug-guile@HIDDEN.
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