Path: csiph.com!xmission!news.glorb.com!usenet.stanford.edu!not-for-mail From: Chet Ramey Newsgroups: gnu.bash.bug Subject: Re: SIGINT handling Date: Sat, 19 Sep 2015 21:28:24 -0400 Organization: ITS, Case Western Reserve University Lines: 32 Approved: bug-bash@gnu.org Message-ID: References: <20150918151439.GA16455@chaz.gmail.com> <55FDC8B4.4000505@case.edu> <20150919213101.GA4393@chaz.gmail.com> Reply-To: chet.ramey@case.edu NNTP-Posting-Host: lists.gnu.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Trace: usenet.stanford.edu 1442712513 13219 208.118.235.17 (20 Sep 2015 01:28:33 GMT) X-Complaints-To: action@cs.stanford.edu Cc: bug-bash , chet.ramey@case.edu To: Stephane Chazelas Envelope-to: bug-bash@gnu.org User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 In-Reply-To: <20150919213101.GA4393@chaz.gmail.com> X-Junkmail-Whitelist: YES (by domain whitelist at mpv2.tis.cwru.edu) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] X-Received-From: 129.22.105.37 X-BeenThere: bug-bash@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Bug reports for the GNU Bourne Again SHell List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Xref: csiph.com gnu.bash.bug:11512 On 9/19/15 5:31 PM, Stephane Chazelas wrote: > 2015-09-19 16:42:28 -0400, Chet Ramey: > [...] >> I'm surprised you've managed to avoid the dozen or so discussions on the >> topic. >> >> http://lists.gnu.org/archive/html/bug-bash/2014-03/msg00108.html > [...] > > Thanks for the links. I still think the comments on the second > article I sent > (http://thread.gmane.org/gmane.comp.shells.bash.bugs/24178/focus=24183) > still hold though and from a quick read I don't see those points > being mentioned in the past discussions (but that was a quick > read). > > I notice that you mention the race conditions have been fixed, > but I'm still seeing some non-deterministic behaviour. I can't reproduce this on Mac OS X and RHEL 6 and 7, the systems I have readily available today. The shell notes when it sees SIGINT and whether or not waitpid returns -1/EINTR. If the sleep exits due to SIGINT, even after the waitpid returns -1, the shell assumes it didn't catch and handle the SIGINT and the shell calls the trap handler. -- ``The lyf so short, the craft so long to lerne.'' - Chaucer ``Ars longa, vita brevis'' - Hippocrates Chet Ramey, ITS, CWRU chet@case.edu http://cnswww.cns.cwru.edu/~chet/