From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Andreas Schwab Newsgroups: gmane.emacs.devel Subject: Re: A question on sigchld_handler Date: Thu, 27 Dec 2007 10:41:01 +0100 Message-ID: References: NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1198748491 12608 80.91.229.12 (27 Dec 2007 09:41:31 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 27 Dec 2007 09:41:31 +0000 (UTC) Cc: "emacs-devel@gnu.org" To: Herbert Euler Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Thu Dec 27 10:41:45 2007 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1J7pFF-0006Ed-Lf for ged-emacs-devel@m.gmane.org; Thu, 27 Dec 2007 10:41:41 +0100 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1J7pEu-0005Vc-Dg for ged-emacs-devel@m.gmane.org; Thu, 27 Dec 2007 04:41:20 -0500 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1J7pEk-0005Tn-L8 for emacs-devel@gnu.org; Thu, 27 Dec 2007 04:41:10 -0500 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1J7pEh-0005Rq-JI for emacs-devel@gnu.org; Thu, 27 Dec 2007 04:41:09 -0500 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1J7pEf-0005R0-Ig for emacs-devel@gnu.org; Thu, 27 Dec 2007 04:41:06 -0500 Original-Received: from ns.suse.de ([195.135.220.2] helo=mx1.suse.de) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1J7pEf-0003eN-4p for emacs-devel@gnu.org; Thu, 27 Dec 2007 04:41:05 -0500 Original-Received: from Relay2.suse.de (mail2.suse.de [195.135.221.8]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.suse.de (Postfix) with ESMTP id 4E08825C15; Thu, 27 Dec 2007 10:41:02 +0100 (CET) X-Yow: I left my WALLET in the BATHROOM!! In-Reply-To: (Herbert Euler's message of "Thu\, 27 Dec 2007 14\:46\:43 +0800") User-Agent: Gnus/5.110006 (No Gnus v0.6) Emacs/22.1 (gnu/linux) X-detected-kernel: by monty-python.gnu.org: Linux 2.4-2.6 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:85503 Archived-At: Herbert Euler writes: > Could SIGCHLD possibly be delivered more than once to Emacs, so that > `sigchld_handler' is invoked more than once? A signal is blocked as long as its handler hasn't returned. Thus that can only happen when the signal is explicitly unblocked, or the function is called manually. Andreas. --=20 Andreas Schwab, SuSE Labs, schwab@suse.de SuSE Linux Products GmbH, Maxfeldstra=DFe 5, 90409 N=FCrnberg, Germany PGP key fingerprint =3D 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED= 5 "And now for something completely different."