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 17:06:07 -0400 Organization: disorganization Message-ID: References: Reply-To: sds@gnu.org NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: sea.gmane.org 1173647217 23344 80.91.229.12 (11 Mar 2007 21:06:57 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Sun, 11 Mar 2007 21:06:57 +0000 (UTC) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sun Mar 11 22:06:50 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 1HQVFi-0006ZD-59 for ged-emacs-devel@m.gmane.org; Sun, 11 Mar 2007 22:06:50 +0100 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1HQVGH-0004G7-W7 for ged-emacs-devel@m.gmane.org; Sun, 11 Mar 2007 16:07:26 -0500 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1HQVG8-0004Fq-1G for emacs-devel@gnu.org; Sun, 11 Mar 2007 17:07:16 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1HQVG5-0004Fb-B4 for emacs-devel@gnu.org; Sun, 11 Mar 2007 17:07:15 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1HQVG5-0004FY-6K for emacs-devel@gnu.org; Sun, 11 Mar 2007 16:07:13 -0500 Original-Received: from main.gmane.org ([80.91.229.2] helo=ciao.gmane.org) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1HQVFU-000883-Ao for emacs-devel@gnu.org; Sun, 11 Mar 2007 17:06:36 -0400 Original-Received: from list by ciao.gmane.org with local (Exim 4.43) id 1HQVFK-0005Cg-Ng for emacs-devel@gnu.org; Sun, 11 Mar 2007 22:06:26 +0100 Original-Received: from ool-182f780f.dyn.optonline.net ([24.47.120.15]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 11 Mar 2007 22:06:26 +0100 Original-Received: from sds by ool-182f780f.dyn.optonline.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 11 Mar 2007 22:06:26 +0100 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: emacs-devel@gnu.org Original-Lines: 20 Original-X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: ool-182f780f.dyn.optonline.net 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) Cancel-Lock: sha1:Vytv08f/es+HPcMK1ljGpDg+hHM= X-detected-kernel: Linux 2.6, seldom 2.4 (older, 4) 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:67737 Archived-At: > * Kim F. Storm [2007-03-11 20:39:25 +0100]: > > Sam Steingold writes: > > Absolutely brilliant! I can confirm that it works. Thanks! > 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. -- Sam Steingold (http://sds.podval.org/) on Fedora Core release 6 (Zod) http://honestreporting.com http://israelunderattack.slide.com http://memri.org http://iris.org.il http://jihadwatch.org http://dhimmi.com The plural of "anecdote" is not "data".