X-Recipient: archive-cygwin@delorie.com X-Spam-Check-By: sourceware.org Message-ID: <47F29A2E.1080003@cygwin.com> Date: Tue, 01 Apr 2008 16:25:18 -0400 From: "Larry Hall (Cygwin)" Reply-To: cygwin@cygwin.com User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.3) Gecko/20070505 Remi/2.0.0.0-3.fc4.remi Thunderbird/2.0.0.0 Mnenhy/0.7.5.0 MIME-Version: 1.0 To: cygwin@cygwin.com Subject: Re: lost SIGTERM signal handler and winpcap.... References: <23fce8e60804011311n1d33e05cqc753018a1e7bd140@mail.gmail.com> In-Reply-To: <23fce8e60804011311n1d33e05cqc753018a1e7bd140@mail.gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com James Abley wrote: > On 28/03/2008, S A wrote: >> Here's the really strange part: >> >> if I do an strace on my application, then my signal handler >> gets invoked correctly!! Can't explain this. > > c.f. Heisenbug [1]. It's common enough, but very annoying. Gives you > another avenue to explore though. What does strace do to the > environment that causes the problem to disappear? That's simple. strace is a Windows app, not a Cygwin app. So it doesn't have the Cygwin signal semantics. You'll probably get a better feel for the differences here if you take a look at the Cygwin doc: Gritty details can be found in 'how-signals-work.txt' the 'cygwin' source directory. -- Larry Hall http://www.rfk.com RFK Partners, Inc. (508) 893-9779 - RFK Office 216 Dalton Rd. (508) 893-9889 - FAX Holliston, MA 01746 _____________________________________________________________________ A: Yes. > Q: Are you sure? >> A: Because it reverses the logical flow of conversation. >>> Q: Why is top posting annoying in email? -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/