From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Sam Steingold Newsgroups: gmane.emacs.devel Subject: Re: busyloop in sigchld_handler Date: Sun, 11 Mar 2007 17:17:05 -0400 Message-ID: References: Reply-To: sds@gnu.org NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7BIT X-Trace: sea.gmane.org 1173647860 30014 80.91.229.12 (11 Mar 2007 21:17:40 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Sun, 11 Mar 2007 21:17:40 +0000 (UTC) Cc: emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sun Mar 11 22:17:31 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 1HQVPz-0002k8-W7 for ged-emacs-devel@m.gmane.org; Sun, 11 Mar 2007 22:17:28 +0100 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1HQVQZ-0007bU-VW for ged-emacs-devel@m.gmane.org; Sun, 11 Mar 2007 16:18:03 -0500 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1HQVQM-0007XU-Th for emacs-devel@gnu.org; Sun, 11 Mar 2007 17:17:50 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1HQVQL-0007Ui-Cv for emacs-devel@gnu.org; Sun, 11 Mar 2007 17:17:50 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1HQVQL-0007Uc-7L for emacs-devel@gnu.org; Sun, 11 Mar 2007 16:17:49 -0500 Original-Received: from mta2.srv.hcvlny.cv.net ([167.206.4.197]) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1HQVPe-0000p6-A1; Sun, 11 Mar 2007 17:17:06 -0400 Original-Received: from loiso.podval.org (ool-182f780f.dyn.optonline.net [24.47.120.15]) by mta2.srv.hcvlny.cv.net (Sun Java System Messaging Server 6.2-6.01 (built Apr 3 2006)) with ESMTP id <0JER00B0JCGHN740@mta2.srv.hcvlny.cv.net>; Sun, 11 Mar 2007 17:17:06 -0400 (EDT) Original-Received: by loiso.podval.org (Postfix, from userid 500) id 5B5B121E055; Sun, 11 Mar 2007 17:17:05 -0400 (EDT) In-reply-to: Mail-Copies-To: never X-Attribution: Sam X-Disclaimer: You should not expect anyone to agree with me. User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.0.95 (gnu/linux) X-detected-kernel: Solaris 10 (beta) 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:67740 Archived-At: > * Eli Zaretskii [2007-03-11 23:14:01 +0200]: > >> From: Sam Steingold >> Date: Sun, 11 Mar 2007 17:06:07 -0400 >> >> > But can you explain why it works? >> >> wait3 is a system call, which, when invoked in a loop, prevents the >> kernel from doing anything else (in this case, sending SIGCHLD to >> emacs). sleep allows the kernel some time to pass the signal. > > So how portable is this trick? sleep is in POSIX. -- Sam Steingold (http://sds.podval.org/) on Fedora Core release 6 (Zod) http://thereligionofpeace.com http://iris.org.il http://mideasttruth.com http://palestinefacts.org http://pmw.org.il http://israelunderattack.slide.com WHO ATE MY BREAKFAST PANTS?