From: Howard Chu <hyc@symas.com>
To: davids@webmaster.com
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: pthread_mutex_unlock (was Re: sched_yield() makes OpenLDAP slow)
Date: Fri, 27 Jan 2006 12:13:13 -0800 [thread overview]
Message-ID: <43DA7ED9.4090802@symas.com> (raw)
In-Reply-To: <MDEHLPKNGKAHNMBLJOLKEEHCJLAB.davids@webmaster.com>
David Schwartz wrote:
> We don't agree on what the specification says.
>
>
>> Why do you suppose that is?
>>
>
> Why do I suppose what? I find the specification perfectly clear and your
> reading of it incredibly strained for the three reasons I stated.
>
Oddly enough, you said
http://groups.google.com/group/comp.programming.threads/msg/28b58e91886a3602?hl=en&
"Unfortunately, it sounds reasonable" so I can't lend credence to your
stating that my reading is incredibly strained. The fact that
LinuxThreads historically adhered to my reading of it lends more weight
to my argument. The fact that people accepted this interpretation for so
many years lends further weight. In light of this, it is your current
interpretation that is incredibly strained, and I would say, broken.
You have essentially created a tri-state mutex. (Locked, unlocked, and
sort-of-unlocked-but-really-reserved.) That may be a good and useful
thing in its own right, but it should not be the default behavior.
--
-- Howard Chu
Chief Architect, Symas Corp. http://www.symas.com
Director, Highland Sun http://highlandsun.com/hyc
OpenLDAP Core Team http://www.openldap.org/project/
next prev parent reply other threads:[~2006-01-27 20:13 UTC|newest]
Thread overview: 88+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-24 22:59 e100 oops on resume Stefan Seyfried
2006-01-24 23:21 ` Mattia Dongili
2006-01-25 9:02 ` Olaf Kirch
2006-01-25 12:11 ` Olaf Kirch
2006-01-25 13:51 ` sched_yield() makes OpenLDAP slow Howard Chu
2006-01-25 14:38 ` Robert Hancock
2006-01-25 17:49 ` Christopher Friesen
2006-01-25 18:26 ` pthread_mutex_unlock (was Re: sched_yield() makes OpenLDAP slow) Howard Chu
2006-01-25 18:59 ` Nick Piggin
2006-01-25 19:32 ` Howard Chu
2006-01-26 8:51 ` Nick Piggin
2006-01-26 14:15 ` Kyle Moffett
2006-01-26 14:43 ` Howard Chu
2006-01-26 19:57 ` David Schwartz
2006-01-26 20:27 ` Howard Chu
2006-01-26 20:46 ` Nick Piggin
2006-01-26 21:32 ` Howard Chu
2006-01-26 21:41 ` Nick Piggin
2006-01-26 21:56 ` Howard Chu
2006-01-26 22:24 ` Nick Piggin
2006-01-27 8:08 ` Howard Chu
2006-01-27 19:25 ` Philipp Matthias Hahn
2006-02-01 12:31 ` Nick Piggin
2006-01-27 4:27 ` Steven Rostedt
2006-01-26 21:58 ` Christopher Friesen
2006-01-27 4:13 ` Steven Rostedt
2006-01-27 2:16 ` David Schwartz
2006-01-27 8:19 ` Howard Chu
2006-01-27 19:50 ` David Schwartz
2006-01-27 20:13 ` Howard Chu [this message]
2006-01-27 21:05 ` David Schwartz
2006-01-27 21:23 ` Howard Chu
2006-01-27 23:31 ` David Schwartz
2006-01-30 8:28 ` Helge Hafting
2006-01-26 10:38 ` Nikita Danilov
2006-01-30 8:35 ` Helge Hafting
2006-01-30 11:13 ` Nikita Danilov
2006-01-31 23:18 ` David Schwartz
2006-01-25 21:06 ` Lee Revell
2006-01-25 22:14 ` Howard Chu
2006-01-26 0:16 ` Robert Hancock
2006-01-26 0:49 ` Howard Chu
2006-01-26 1:04 ` Lee Revell
2006-01-26 1:31 ` Howard Chu
2006-01-26 2:05 ` David Schwartz
2006-01-26 2:48 ` Mark Lord
2006-01-26 3:30 ` David Schwartz
2006-01-26 3:49 ` Samuel Masham
2006-01-26 4:02 ` Samuel Masham
2006-01-26 4:53 ` Lee Revell
2006-01-26 6:14 ` Samuel Masham
2006-01-26 8:54 ` Nick Piggin
2006-01-26 14:24 ` Howard Chu
2006-01-26 14:54 ` Nick Piggin
2006-01-26 15:23 ` Howard Chu
2006-01-26 15:51 ` Nick Piggin
2006-01-26 16:44 ` Howard Chu
2006-01-26 17:34 ` linux-os (Dick Johnson)
2006-01-26 19:00 ` Nick Piggin
2006-01-26 19:14 ` linux-os (Dick Johnson)
2006-01-26 21:12 ` Nick Piggin
2006-01-26 21:31 ` linux-os (Dick Johnson)
2006-01-27 7:06 ` Valdis.Kletnieks
2006-01-30 8:44 ` Helge Hafting
2006-01-30 8:50 ` Howard Chu
2006-01-30 15:33 ` Kyle Moffett
2006-01-30 13:28 ` linux-os (Dick Johnson)
2006-01-30 15:15 ` Helge Hafting
2006-01-26 10:44 ` Nikita Danilov
2006-01-26 0:08 ` Robert Hancock
2006-01-26 1:07 ` sched_yield() makes OpenLDAP slow David Schwartz
2006-01-26 8:30 ` Helge Hafting
2006-01-26 9:01 ` Nick Piggin
2006-01-26 10:50 ` Nikita Danilov
2006-01-25 19:37 ` e100 oops on resume Jesse Brandeburg
2006-01-25 20:14 ` Olaf Kirch
2006-01-25 22:28 ` Jesse Brandeburg
2006-01-26 0:28 ` Jesse Brandeburg
2006-01-26 9:32 ` Pavel Machek
2006-01-26 19:02 ` Stefan Seyfried
2006-01-26 19:09 ` Olaf Kirch
2006-01-28 11:53 ` Mattia Dongili
2006-01-28 19:53 ` Jesse Brandeburg
2006-02-07 6:57 ` Jeff Garzik
[not found] ` <BAY108-DAV111F6EF46F6682FEECCC1593140@phx.gbl>
[not found] ` <4807377b0601271404w6dbfcff6s4de1c3f785dded9f@mail.gmail.com>
2006-01-30 17:25 ` Can I do a regular read to simulate prefetch instruction? John Smith
-- strict thread matches above, loose matches on Subject: below --
2006-01-30 22:01 pthread_mutex_unlock (was Re: sched_yield() makes OpenLDAP slow) linux
2006-01-30 23:37 linux
2006-02-01 17:06 Lee Schermerhorn
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=43DA7ED9.4090802@symas.com \
--to=hyc@symas.com \
--cc=davids@webmaster.com \
--cc=linux-kernel@vger.kernel.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