From owner-freebsd-hackers Mon Feb 9 08:14:17 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id IAA27161 for hackers-outgoing; Mon, 9 Feb 1998 08:14:17 -0800 (PST) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from po1.bbn.com (PO1.BBN.COM [192.1.50.38]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id IAA27153 for ; Mon, 9 Feb 1998 08:14:13 -0800 (PST) (envelope-from dennis@bbn.com) Received: from bbn.com (DROCKWELL.BBN.COM [128.89.31.139]) by po1.bbn.com (8.8.6/8.8.6) with ESMTP id LAA16866; Mon, 9 Feb 1998 11:12:51 -0500 (EST) Message-Id: <199802091612.LAA16866@po1.bbn.com> To: Michael Schuster cc: "hackers@FreeBSD.ORG" Subject: Re: Shared memory and signals In-reply-to: Message from Michael Schuster <34DAB34B.DD7FFC63@utimaco.co.at> . X-face: &R'hN{mZu#r@8b_JU\bn"!fYpP{?5k4p/(|]?.2'6;>Dc9}~t*vY=/#-:"63ya.%)%o`Kv$ u&'Ff5k&n[}QC;j7YYsR5Hl]G"E:*9Zmw;dx[sw&9Tmx_PB/7B`RdFW;#@49hJU&kW+J"<[`9^?.dQ 3]L$zK,4'=tThX$wC!M\`e*@1y Date: Mon, 09 Feb 1998 11:13:57 -0500 From: Dennis Rockwell Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On 6 Feb, Michael Schuster wrote: > Dennis Rockwell wrote > > Also, this looks like a race condition just waiting to be lost. > > Could you elaborate? Sure. The last two attachments do the sense ioctl at roughly the same time, and both see that shm_nattach == 2, so neither does the RMID. Dennis To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe hackers" in the body of the message