From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: ludo@gnu.org (Ludovic =?iso-8859-1?Q?Court=E8s?=) Newsgroups: gmane.lisp.guile.devel Subject: Re: Passing C pointers through guile Date: Thu, 10 Jul 2008 15:01:51 +0200 Message-ID: <874p6xx58g.fsf@gnu.org> References: NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1215694970 24573 80.91.229.12 (10 Jul 2008 13:02:50 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 10 Jul 2008 13:02:50 +0000 (UTC) To: guile-devel@gnu.org Original-X-From: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Thu Jul 10 15:03:11 2008 Return-path: Envelope-to: guile-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1KGvnf-00024x-RA for guile-devel@m.gmane.org; Thu, 10 Jul 2008 15:03:08 +0200 Original-Received: from localhost ([127.0.0.1]:60497 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1KGvmo-00056u-Cz for guile-devel@m.gmane.org; Thu, 10 Jul 2008 09:02:14 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1KGvmk-00056o-Hj for guile-devel@gnu.org; Thu, 10 Jul 2008 09:02:10 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1KGvmh-00056Y-IY for guile-devel@gnu.org; Thu, 10 Jul 2008 09:02:09 -0400 Original-Received: from [199.232.76.173] (port=57761 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1KGvmh-00056O-6j for guile-devel@gnu.org; Thu, 10 Jul 2008 09:02:07 -0400 Original-Received: from main.gmane.org ([80.91.229.2]:45755 helo=ciao.gmane.org) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1KGvmg-0005GO-GA for guile-devel@gnu.org; Thu, 10 Jul 2008 09:02:06 -0400 Original-Received: from list by ciao.gmane.org with local (Exim 4.43) id 1KGvma-00054Y-CI for guile-devel@gnu.org; Thu, 10 Jul 2008 13:02:00 +0000 Original-Received: from 193.50.110.234 ([193.50.110.234]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 10 Jul 2008 13:02:00 +0000 Original-Received: from ludo by 193.50.110.234 with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 10 Jul 2008 13:02:00 +0000 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 18 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: 193.50.110.234 X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: 23 Messidor an 216 de la =?iso-8859-1?Q?R=E9volution?= X-PGP-Key-ID: 0xEA52ECF4 X-PGP-Key: http://www.fdn.fr/~lcourtes/ludovic.asc X-PGP-Fingerprint: 821D 815D 902A 7EAB 5CEE D120 7FBA 3D4F EB1F 5364 X-OS: i686-pc-linux-gnu User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.2 (gnu/linux) Cancel-Lock: sha1:M2S1KJxSE4MhcYlyMRAuF4gZ2A0= X-detected-kernel: by monty-python.gnu.org: Linux 2.6, seldom 2.4 (older, 4) X-BeenThere: guile-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Developers list for Guile, the GNU extensibility library" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Errors-To: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.lisp.guile.devel:7365 Archived-At: Hi, "Kjetil S. Matheussen" writes: > Point is that you very often don't need any kind of free functionality. > For example, if you create a gui widget, you probably have a callback > function which is called if the gui is closed. That callback > function can free any allocated memory. Another example from snd > is creating ladspa plugins (audio plugins in linux). Handlers > from those, plus variuos configuration stuff, is alive througout > the whole session and will be automatically freed when the program > closes. Sure, but the general case is that a C-implemented object must be explicitly destroyed when it's no longer referenced by Scheme code. Thanks, Ludovic.