From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=) Newsgroups: gmane.comp.gdb.patches,gmane.lisp.guile.user Subject: Re: [PATCH v2 02/13] script language API for GDB: extension.[ch] Date: Wed, 08 Jan 2014 00:05:43 +0100 Message-ID: <87vbxv8kag.fsf@gnu.org> References: <52a7f3e8.e7ed440a.1c58.020f@mx.google.com> <87vbyffcwu.fsf@fleche.redhat.com> <87txdklqk4.fsf@gnu.org> <87r48kkc9g.fsf@fleche.redhat.com> <87eh4krl81.fsf@gnu.org> <87iotvixu4.fsf@fleche.redhat.com> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1389135948 3039 80.91.229.3 (7 Jan 2014 23:05:48 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 7 Jan 2014 23:05:48 +0000 (UTC) Cc: gdb-patches@sourceware.org, guile-user@gnu.org To: Tom Tromey Original-X-From: gdb-patches-return-108965-gdb-gdb-patches=m.gmane.org@sourceware.org Wed Jan 08 00:05:55 2014 Return-path: Envelope-to: gdb-gdb-patches@plane.gmane.org Original-Received: from server1.sourceware.org ([209.132.180.131] helo=sourceware.org) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1W0fia-0008Os-Ny for gdb-gdb-patches@plane.gmane.org; Wed, 08 Jan 2014 00:05:53 +0100 DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:from:to:cc:subject:references:date:in-reply-to :message-id:mime-version:content-type:content-transfer-encoding; q=dns; s=default; b=ev+EQ7DA5OI7cqZNU5k0JWq91OYDzm9+JjqNB1AvjOD ANb6qtuRWN9zAP8Xl8O7k93xa3rhdjOQJCx0jeWGQ36E7A5nDOks4jdYhNZEf9PP kmYHN98fROhtkEtx9sv0oYdHt/wO1gXjrmZAPXCvisIp+C6myXJBeitWEiAIZSzs = DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:from:to:cc:subject:references:date:in-reply-to :message-id:mime-version:content-type:content-transfer-encoding; s=default; bh=C9kHH1WG54fi296gais6Q/PErkU=; b=XlgKtKnje1qLZNHI3 cCyNrGaa3kIYy6RgZadQ36tWzWSpGLqO2kvbta/B4OHz2PjRzplzSFL8j6ul2fGJ TsE2YaCNCtWf4Be2BDvc0S3Gjo5UzPDLQdQF0rENcYojJNYXrmc9a1++LThCG1kJ SmYJAzwNL2haYGDDhfM/dPkP8U= Original-Received: (qmail 15388 invoked by alias); 7 Jan 2014 23:05:48 -0000 Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Original-Sender: gdb-patches-owner@sourceware.org Original-Received: (qmail 15375 invoked by uid 89); 7 Jan 2014 23:05:47 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.2 required=5.0 tests=AWL,BAYES_00,SPF_HELO_PASS,SPF_SOFTFAIL autolearn=no version=3.3.2 X-HELO: hera.aquilenet.fr Original-Received: from hera.aquilenet.fr (HELO hera.aquilenet.fr) (141.255.128.1) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Tue, 07 Jan 2014 23:05:46 +0000 Original-Received: from localhost (localhost [127.0.0.1]) by hera.aquilenet.fr (Postfix) with ESMTP id E93F01A5C; Wed, 8 Jan 2014 00:05:43 +0100 (CET) Original-Received: from hera.aquilenet.fr ([127.0.0.1]) by localhost (hera.aquilenet.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 7j0VDKfwJJi2; Wed, 8 Jan 2014 00:05:43 +0100 (CET) Original-Received: from pluto (reverse-83.fdn.fr [80.67.176.83]) by hera.aquilenet.fr (Postfix) with ESMTPSA id 90F09523; Wed, 8 Jan 2014 00:05:43 +0100 (CET) X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: 19 =?utf-8?Q?Niv=C3=B4se?= an 222 de la =?utf-8?Q?R?= =?utf-8?Q?=C3=A9volution?= 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 In-Reply-To: <87iotvixu4.fsf@fleche.redhat.com> (Tom Tromey's message of "Tue, 07 Jan 2014 09:02:59 -0700") User-Agent: Gnus/5.130007 (Ma Gnus v0.7) Emacs/24.3 (gnu/linux) Xref: news.gmane.org gmane.comp.gdb.patches:93967 gmane.lisp.guile.user:10986 Archived-At: Tom Tromey skribis: > Ludovic> Would it work, upon SIGINT, to do something like: > Ludovic> (system-async-mark (lambda () > Ludovic> (throw 'system-error ... EINTR))) > Ludovic> That would eventually raise an exception in Scheme code. > > According to the Guile docs one must use scm_sigaction, since > scm_system_async_mark is not async-signal-safe. Oh, right. This could be worked around by having a separate signal delivery thread (which is what Guile currently does internally), but that=E2=80=99s not so great. I guess this is another limitation of Guile=E2=80=99s current signal handli= ng strategy, and something we should fix. Ludo=E2=80=99.