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: FFI supports callbacks Date: Fri, 03 Sep 2010 19:27:04 +0200 Message-ID: <87k4n2hh5j.fsf@gnu.org> References: <87bp8ej3w3.fsf@gnu.org> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Trace: dough.gmane.org 1283534863 13026 80.91.229.12 (3 Sep 2010 17:27:43 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Fri, 3 Sep 2010 17:27:43 +0000 (UTC) To: guile-devel@gnu.org Original-X-From: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Fri Sep 03 19:27:42 2010 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 4.69) (envelope-from ) id 1Ora38-0006WB-Js for guile-devel@m.gmane.org; Fri, 03 Sep 2010 19:27:41 +0200 Original-Received: from localhost ([127.0.0.1]:53824 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Ora33-0004ka-6t for guile-devel@m.gmane.org; Fri, 03 Sep 2010 13:27:33 -0400 Original-Received: from [140.186.70.92] (port=58337 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Ora2r-0004hy-Kt for guile-devel@gnu.org; Fri, 03 Sep 2010 13:27:24 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1Ora2k-00085K-HR for guile-devel@gnu.org; Fri, 03 Sep 2010 13:27:15 -0400 Original-Received: from lo.gmane.org ([80.91.229.12]:43126) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1Ora2k-000854-Al for guile-devel@gnu.org; Fri, 03 Sep 2010 13:27:14 -0400 Original-Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1Ora2i-0006KO-2t for guile-devel@gnu.org; Fri, 03 Sep 2010 19:27:12 +0200 Original-Received: from yoda.fdn.fr ([80.67.169.18]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 03 Sep 2010 19:27:12 +0200 Original-Received: from ludo by yoda.fdn.fr with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 03 Sep 2010 19:27:12 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 41 Original-X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: yoda.fdn.fr X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: 17 Fructidor an 218 de la =?iso-8859-1?Q?R=E9volutio?= =?iso-8859-1?Q?n?= X-PGP-Key-ID: 0xEA52ECF4 X-PGP-Key: http://www.fdn.fr/~lcourtes/ludovic.asc X-PGP-Fingerprint: 83C4 F8E5 10A3 3B4C 5BEA D15D 77DD 95E2 EA52 ECF4 X-OS: x86_64-unknown-linux-gnu User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.2 (gnu/linux) Cancel-Lock: sha1:OeNMlaNlf6MnbSmzZvB8SBtrIzs= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) 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:10850 Archived-At: Hello! Andy Wingo writes: > On Fri 03 Sep 2010 07:30, ludo@gnu.org (Ludovic Courtès) writes: > >> I'm pleased to announce that (system foreign) supports callbacks via the >> new ‘procedure->pointer’: >> >> How do you like it? > > Ludovic, that is breathtakingly great. My heart went aflutter looking at > the f-callback-1 test :-)) That’s the least I could expect. :-) > Only two thoughts: > > 1) Do we need to trampoline through a scm_with_guile in the callback > stub? Nooo, not necessarily, ‘scm_without_guile’ is old-fashioned. Quoting the fine manual: Starting from Guile 2.0, blocked threads no longer hinder garbage collection. Thus, the functions below are not needed anymore. They can still be used to inform the GC that a thread is about to block, giving it a (small) optimization opportunity for "stop the world" garbage collections, should they occur while the thread is blocked. :-) > 2) Your commit has some tabs in it ;) Oh? But not in Scheme files hopefully? BTW, while we’re at it, how about make-foreign-function => pointer->procedure? Sounds like the ultimate rename to me. Thanks, Ludo’.