Date: Fri, 4 Sep 2015 08:37:40 +0800 From: Erich Dollansky <erichsfreebsdlist@alogt.com> To: Konstantin Belousov <kostikbel@gmail.com> Cc: FreeBSD stable <freebsd-stable@freebsd.org>, freebsd-threads@freebsd.org Subject: Re: pthread_cancel / sleep change in behaviour Message-ID: <20150904083740.5f3e49aa@X220.alogt.com> In-Reply-To: <20150903104351.GE2072@kib.kiev.ua> References: <20150903080047.16be939e@X220.alogt.com> <20150903081947.GB2072@kib.kiev.ua> <20150903183353.2633a38b@X220.alogt.com> <20150903104351.GE2072@kib.kiev.ua>
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Hi, On Thu, 3 Sep 2015 13:43:51 +0300 Konstantin Belousov <kostikbel@gmail.com> wrote: > On Thu, Sep 03, 2015 at 06:33:53PM +0800, Erich Dollansky wrote: > > On Thu, 3 Sep 2015 11:19:47 +0300 > > Konstantin Belousov <kostikbel@gmail.com> wrote: > > > On Thu, Sep 03, 2015 at 08:00:47AM +0800, Erich Dollansky wrote: > > > > Is this change of behaviour a feature or a bug? > > > Provide a minimal example demonstrating the issue. > > while preparing the example I found the source of the problem. We > > have to block all signals for some reason. The handling for > > > > signal (SIGTHR, SIG_IGN); > > > > seems to have changed. The moment I remove above's line from the > > code, the program works. There is no difference when the programs > > runs on machines prior mid November 2014. > > > Err, this is a bug, probably both in your program (user code must not > twiddle with SIGCANCEL) and in libc. The later, I believe, was fixed I just ran the same binary on: FreeBSD B85M-HD3-0.alogt.com 11.0-CURRENT FreeBSD 11.0-CURRENT #5 r287425: Thu Sep 3 21:44:16 WITA 2015 erich@B85M-HD3-0.alogt.com:/usr/obj/usr/src/sys/B85M-HD3 amd64 and it works there. So, it is just a matter of time until the fix finds its way back to 10? Of course, I do not ignore the signal now in the application anymore. The application then works as expected on 10.2 STABLE. Thanks for your work and also thanks for your help. Erich
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