From owner-freebsd-bugs@FreeBSD.ORG Thu Jan 10 22:54:55 2008 Return-Path: Delivered-To: freebsd-bugs@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id AF73916A41A; Thu, 10 Jan 2008 22:54:55 +0000 (UTC) (envelope-from marka@isc.org) Received: from drugs.dv.isc.org (drugs.dv.isc.org [IPv6:2001:470:1f00:820:214:22ff:fed9:fbdc]) by mx1.freebsd.org (Postfix) with ESMTP id 7A7AE13C4EF; Thu, 10 Jan 2008 22:54:55 +0000 (UTC) (envelope-from marka@isc.org) Received: from drugs.dv.isc.org (localhost [127.0.0.1]) by drugs.dv.isc.org (8.14.2/8.14.1) with ESMTP id m0AMssWo045381; Fri, 11 Jan 2008 09:54:54 +1100 (EST) (envelope-from marka@drugs.dv.isc.org) Message-Id: <200801102254.m0AMssWo045381@drugs.dv.isc.org> To: Kris Kennaway From: Mark Andrews In-reply-to: Your message of "Thu, 10 Jan 2008 22:54:18 BST." <4786940A.2050906@FreeBSD.org> Date: Fri, 11 Jan 2008 09:54:54 +1100 Sender: marka@isc.org Cc: freebsd-bugs@FreeBSD.org Subject: Re: kern/118626: Bad interaction between SIGPIPE and threads. X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Jan 2008 22:54:55 -0000 > David Schultz wrote: > > On Thu, Dec 13, 2007, Mark Andrews wrote: > >> The following reply was made to PR kern/118626; it has been noted by GNATS > . > >> > >> From: Mark Andrews > >> To: bug-followup@FreeBSD.org, marka@isc.org > >> Cc: sobomax@freebsd.org > >> Subject: Re: kern/118626: Bad interaction between SIGPIPE and threads. > >> Date: Thu, 13 Dec 2007 11:41:16 +1100 > >> > >> I'll definitely try it. > >> > >> The man page for socket(2) should be updated to reference SO_NOSIGPIPE > >> where it talks about SIGPIPE being generated. > > > > The commit log says SO_NOSIGPIPE exists for compatibility, but it > > looks fully implemented and supported. I've cc'd the original > > author to find out if there's any good reason not to document it. > > It definitely should be documented fully. Converting threaded > applications to use this can significantly reduce the lock contention > associated with signal delivery and associated processing, and may > improve performance. > > Kris FYI: libisc and libbind will both being using SO_NOSIGPIPE when it is available as it is the only way to make the libraries safe in a threaded envirionment without impacting on the applications use of SIGPIPE. Mark -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: Mark_Andrews@isc.org