Re: Interrupted system call on read after ~20 minutes inactivity?

From	Kaz Kylheku <643-408-1753@kylheku.com>
Newsgroups	comp.lang.misc, comp.lang.c
Subject	Re: Interrupted system call on read after ~20 minutes inactivity?
Date	2025-10-04 01:07 +0000
Organization	A noiseless patient Spider
Message-ID	<20251003175325.86@kylheku.com> (permalink)
References	<10bpkh1$25arg$1@dont-email.me> <a1ZDQ.88557$7Ika.30828@fx17.iad> <20251003165522.137@kylheku.com> <10bpqf3$26gle$1@dont-email.me>

Cross-posted to 2 groups.

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On 2025-10-04, Janis Papanagnou <janis_papanagnou+ng@hotmail.com> wrote:
> Yeah, obviously the maintainer wasn't aware of that. Richard Tobin gave
> a similar reply and I forwarded it for consideration of a change or fix
> in Genie.

I still don't understand how Genie is getting the EINTR if the signals
are registered with signal(), that having BSD semantics on Linux (thanks
to libc), which is like having SA_RESTART in sigaction by default.

It's right here:

https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/posix/signal.c

signal is implemented on top of sigaction and uses SA_RESTART except
for signals for which the program has opted out.

That _sigintr mask is all zeros initially, manipulated by siginterrupt
(adjacent sigintr.c file).

-- 
TXR Programming Language: http://nongnu.org/txr
Cygnal: Cygwin Native Application Library: http://kylheku.com/cygnal
Mastodon: @Kazinator@mstdn.ca

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Interrupted system call on read after ~20 minutes inactivity? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-10-04 00:59 +0200
  Re: Interrupted system call on read after ~20 minutes inactivity? scott@slp53.sl.home (Scott Lurndal) - 2025-10-03 23:31 +0000
    Re: Interrupted system call on read after ~20 minutes inactivity? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-10-04 01:57 +0200
    Re: Interrupted system call on read after ~20 minutes inactivity? Kaz Kylheku <643-408-1753@kylheku.com> - 2025-10-04 00:28 +0000
      Re: Interrupted system call on read after ~20 minutes inactivity? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-10-04 02:41 +0200
        Re: Interrupted system call on read after ~20 minutes inactivity? Kaz Kylheku <643-408-1753@kylheku.com> - 2025-10-04 01:07 +0000
      Re: Interrupted system call on read after ~20 minutes inactivity? richard@cogsci.ed.ac.uk (Richard Tobin) - 2025-10-04 01:04 +0000
        Re: Interrupted system call on read after ~20 minutes inactivity? Kaz Kylheku <643-408-1753@kylheku.com> - 2025-10-04 01:23 +0000
        Re: Interrupted system call on read after ~20 minutes inactivity? Kaz Kylheku <643-408-1753@kylheku.com> - 2025-10-04 01:28 +0000
          Re: Interrupted system call on read after ~20 minutes inactivity? scott@slp53.sl.home (Scott Lurndal) - 2025-10-04 02:12 +0000
        Re: Interrupted system call on read after ~20 minutes inactivity? Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-10-04 02:35 +0000
        Re: Interrupted system call on read after ~20 minutes inactivity? richard@cogsci.ed.ac.uk (Richard Tobin) - 2025-10-04 12:52 +0000
          Re: Interrupted system call on read after ~20 minutes inactivity? Kaz Kylheku <643-408-1753@kylheku.com> - 2025-10-04 18:50 +0000
  Re: Interrupted system call on read after ~20 minutes inactivity? Alan Bawden <alan@csail.mit.edu> - 2025-10-03 19:33 -0400
    Re: Interrupted system call on read after ~20 minutes inactivity? Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-10-03 23:54 +0000
    Re: Interrupted system call on read after ~20 minutes inactivity? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-10-04 02:00 +0200
      Re: Interrupted system call on read after ~20 minutes inactivity? Alan Bawden <alan@csail.mit.edu> - 2025-10-03 20:26 -0400
        Re: Interrupted system call on read after ~20 minutes inactivity? richard@cogsci.ed.ac.uk (Richard Tobin) - 2025-10-05 11:39 +0000
          Re: Interrupted system call on read after ~20 minutes inactivity? Alan Bawden <alan@csail.mit.edu> - 2025-10-06 04:05 -0400
            Re: Interrupted system call on read after ~20 minutes inactivity? richard@cogsci.ed.ac.uk (Richard Tobin) - 2025-10-06 10:46 +0000
            Re: Interrupted system call on read after ~20 minutes inactivity? Lawrence D’Oliveiro <ldo@nz.invalid> - 2025-10-06 22:04 +0000
  Re: Interrupted system call on read after ~20 minutes inactivity? richard@cogsci.ed.ac.uk (Richard Tobin) - 2025-10-04 00:18 +0000
    Re: Interrupted system call on read after ~20 minutes inactivity? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-10-04 02:27 +0200
    Re: Interrupted system call on read after ~20 minutes inactivity? scott@slp53.sl.home (Scott Lurndal) - 2025-10-04 02:13 +0000
    Re: Interrupted system call on read after ~20 minutes inactivity? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2025-10-05 11:43 -0700
  Re: Interrupted system call on read after ~20 minutes inactivity? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2025-10-07 16:29 +0200

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