From: crossd@gmail.com (Dan Cross)
Subject: [TUHS] signals and blocked in I/O
Date: Fri, 1 Dec 2017 10:53:58 -0500 [thread overview]
Message-ID: <CAEoi9W5mFaQjuGAqSQZSusuyj2uyUX4PvsKVq8bOuM5219E1tQ@mail.gmail.com> (raw)
In-Reply-To: <20171201154448.GL3924@mcvoy.com>
On Fri, Dec 1, 2017 at 10:44 AM, Larry McVoy <lm at mcvoy.com> wrote:
> Does anyone remember the reason that processes blocked in I/O don't catch
> signals? When did that become a thing, was that part of the original
> design or did that happen in BSD?
>
> I'm asking because I'm banging on FreeBSD and I can wedge it hard, to
> the point that it won't recover, by just beating on tons of memory.
My understanding was that signal delivery only happens when the process is
*running* in the kernel. If the process is sleeping on IO then it's not
running, so the signal isn't delivered.
- Dan C.
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next prev parent reply other threads:[~2017-12-01 15:53 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-01 15:44 Larry McVoy
2017-12-01 15:53 ` Dan Cross [this message]
2017-12-01 16:11 ` Clem Cole
2017-12-01 16:18 ` Larry McVoy
2017-12-01 16:33 ` Warner Losh
2017-12-01 17:26 ` Larry McVoy
2017-12-01 19:10 ` Chris Torek
2017-12-01 23:21 ` Dave Horsfall
2017-12-01 21:33 ` Bakul Shah
2017-12-01 22:38 ` Larry McVoy
2017-12-01 23:03 ` Ralph Corderoy
2017-12-01 23:09 ` Larry McVoy
2017-12-01 23:42 ` Bakul Shah
2017-12-02 0:48 ` Larry McVoy
2017-12-02 1:40 ` Bakul Shah
2017-12-03 13:50 ` Ralph Corderoy
2017-12-04 16:36 ` arnold
2017-12-04 16:58 ` Arthur Krewat
2017-12-04 17:19 ` Warner Losh
2017-12-05 2:12 ` Bakul Shah
2017-12-04 22:07 ` Dave Horsfall
2017-12-04 22:54 ` Ron Natalie
2017-12-04 22:56 ` Warner Losh
2017-12-05 0:49 ` Dave Horsfall
2017-12-05 0:58 ` Arthur Krewat
2017-12-05 2:15 ` Dave Horsfall
2017-12-05 2:54 ` Clem cole
2017-12-02 14:59 ` Theodore Ts'o
2017-12-01 16:01 ` Dave Horsfall
2017-12-01 16:24 ` Warner Losh
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