From: "Peter Wächtler" <pwaechtler@loewe-komp.de>
To: Vladimir Zidar <vladimir@mindnever.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Process-Shared Mutex (futex) - What is it good for ?
Date: Tue, 11 Jun 2002 15:19:07 +0200 [thread overview]
Message-ID: <3D05F8CB.7040409@loewe-komp.de> (raw)
In-Reply-To: <1023380463.1751.39.camel@server1> <3D00706B.1070906@loewe-komp.de> <1023481074.7204.70.camel@server1> <3D0324B1.614BD9D4@loewe-komp.de> <1023723807.1491.56.camel@server1>
Vladimir Zidar wrote:
> On Sun, 2002-06-09 at 11:49, Peter Wächtler wrote:
>
>
>>Just for *that*?
>>Do you write programs that reveal from sigsegv with sigsetjmp(3)?
>>
>
> No, I do not. But killing the process sounds much like abnormal
> programm termination. Can you feel the word 'abnormal' ? It is opposite
> of normal - be it simple as error condition on file descriptor.
>
A-prog: B-prog:
gets write lock
write some data
block on read lock
write some data
crashes
wants an error indication to repair data magically
So a crashing A-prog is OK for you, but B should get an indication.
Could catch a signal (SIGLOST?) returning -1 with errno=LOCKBROKEN
That would be possible with futex.
That is a case for writing data to a file - what about linked lists
in memory?
next prev parent reply other threads:[~2002-06-11 13:17 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-06-06 16:21 Process-Shared Mutex (futex) - What is it good for ? Vladimir Zidar
2002-06-07 8:35 ` Peter Wächtler
2002-06-07 20:17 ` Vladimir Zidar
2002-06-09 9:49 ` Peter Wächtler
2002-06-10 15:43 ` Vladimir Zidar
2002-06-11 13:19 ` Peter Wächtler [this message]
2002-06-11 17:18 ` Vladimir Zidar
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=3D05F8CB.7040409@loewe-komp.de \
--to=pwaechtler@loewe-komp.de \
--cc=linux-kernel@vger.kernel.org \
--cc=vladimir@mindnever.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox