From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: ludo@gnu.org (Ludovic =?UTF-8?Q?Court=C3=A8s?=) Newsgroups: gmane.lisp.guile.bugs Subject: bug#30368: =?UTF-8?Q?=E2=80=98select=E2=80=99?= returns non-empty sets upon EINTR or EAGAIN Date: Wed, 07 Feb 2018 14:33:58 +0100 Message-ID: <87y3k4zzy1.fsf@gnu.org> References: <87y3k67671.fsf@gnu.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Trace: blaine.gmane.org 1518010420 2996 195.159.176.226 (7 Feb 2018 13:33:40 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Wed, 7 Feb 2018 13:33:40 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux) To: 30368@debbugs.gnu.org Original-X-From: bug-guile-bounces+guile-bugs=m.gmane.org@gnu.org Wed Feb 07 14:33:36 2018 Return-path: Envelope-to: guile-bugs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ejPqf-0007pC-SB for guile-bugs@m.gmane.org; Wed, 07 Feb 2018 14:33:18 +0100 Original-Received: from localhost ([::1]:39206 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ejPsg-0003Y9-Fu for guile-bugs@m.gmane.org; Wed, 07 Feb 2018 08:35:22 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:45045) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ejPsQ-0003R8-Rp for bug-guile@gnu.org; Wed, 07 Feb 2018 08:35:11 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ejPsL-0004W5-Sj for bug-guile@gnu.org; Wed, 07 Feb 2018 08:35:06 -0500 Original-Received: from debbugs.gnu.org ([208.118.235.43]:53062) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1ejPsL-0004Vz-P7 for bug-guile@gnu.org; Wed, 07 Feb 2018 08:35:01 -0500 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1ejPsL-0007vO-Im for bug-guile@gnu.org; Wed, 07 Feb 2018 08:35:01 -0500 X-Loop: help-debbugs@gnu.org Resent-From: ludo@gnu.org (Ludovic =?UTF-8?Q?Court=C3=A8s?=) Original-Sender: "Debbugs-submit" Resent-CC: bug-guile@gnu.org Resent-Date: Wed, 07 Feb 2018 13:35:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 30368 X-GNU-PR-Package: guile X-GNU-PR-Keywords: Original-Received: via spool by 30368-submit@debbugs.gnu.org id=B30368.151801044230366 (code B ref 30368); Wed, 07 Feb 2018 13:35:01 +0000 Original-Received: (at 30368) by debbugs.gnu.org; 7 Feb 2018 13:34:02 +0000 Original-Received: from localhost ([127.0.0.1]:60956 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ejPrO-0007ti-5K for submit@debbugs.gnu.org; Wed, 07 Feb 2018 08:34:02 -0500 Original-Received: from hera.aquilenet.fr ([185.233.100.1]:35590) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ejPrM-0007tJ-E0 for 30368@debbugs.gnu.org; Wed, 07 Feb 2018 08:34:00 -0500 Original-Received: from localhost (localhost [127.0.0.1]) by hera.aquilenet.fr (Postfix) with ESMTP id D47581075C for <30368@debbugs.gnu.org>; Wed, 7 Feb 2018 14:33:59 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at aquilenet.fr 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 TvIw4roFN__Z for <30368@debbugs.gnu.org>; Wed, 7 Feb 2018 14:33:59 +0100 (CET) Original-Received: from ribbon (unknown [IPv6:2a01:e0a:1d:7270:af76:b9b:ca24:c465]) by hera.aquilenet.fr (Postfix) with ESMTPSA id E73C910434 for <30368@debbugs.gnu.org>; Wed, 7 Feb 2018 14:33:58 +0100 (CET) In-Reply-To: <87y3k67671.fsf@gnu.org> ("Ludovic \=\?utf-8\?Q\?Court\=C3\=A8s\=22'\?\= \=\?utf-8\?Q\?s\?\= message of "Tue, 06 Feb 2018 11:39:30 +0100") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 X-BeenThere: bug-guile@gnu.org List-Id: "Bug reports for GUILE, GNU's Ubiquitous Extension Language" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-guile-bounces+guile-bugs=m.gmane.org@gnu.org Original-Sender: "bug-guile" Xref: news.gmane.org gmane.lisp.guile.bugs:8999 Archived-At: ludo@gnu.org (Ludovic Court=C3=A8s) skribis: > On 2.2.3, it prints: > > $ guile select.scm > > > ;;; (signal! (2)) > ;;; (reading-from #) > >>>From there on it=E2=80=99s stuck in a read(0, =E2=80=A6) call. > > The attached patch fixes it by clearing the returned FD sets on > EINTR/EAGAIN. There=E2=80=99s a case where we can get a =E2=80=9Cfake=E2=80=9D EINTR that= doesn=E2=80=99t come from the underlying select(2) call: when the =E2=80=98scm_i_prepare_to_wait_on_f= d=E2=80=99 call in =E2=80=98scm_std_select=E2=80=99 returns 1, which happens when new = asyncs have been queued. Ludo=E2=80=99.