From: Jan Kiszka <jan.kiszka@domain.hid>
To: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-core] [PATCH 06/12] Lockless fast path for xnsynch_acquire/release
Date: Fri, 17 Oct 2008 00:07:31 +0200 [thread overview]
Message-ID: <48F7BB23.9090600@domain.hid> (raw)
In-Reply-To: <48F7B90D.3030107@domain.hid>
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Gilles Chanteperdrix wrote:
> Jan Kiszka wrote:
>> Gilles Chanteperdrix wrote:
>>> Jan Kiszka wrote:
>>>
>>> Ok. Though I do not see the point of the FASTSEM/FASTSYNCH rename.
>>> FASTSEM is short, and we are not much interested in getting anything
>>> else than semaphores faster.
>> We aren't optimizing semaphores (at least not yet), we are optimizing
>> mutexes only. And if we ever optimize also semaphores, FASTSYNCH will
>> luckily still fit. :)
>
> The name was chosen because we plan to optimize semaphores as well, and
> because mutexes are simply a special kind of semaphores, so, by saying
> FASTSEM, we cover semaphores as well as mutexes.
That depends on how you define both - most semaphore definitions do not
include the ownership concept, thus are not a superclass of
(owner-tracking) mutexes we consider here.
Jan
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next prev parent reply other threads:[~2008-10-16 22:07 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-16 15:46 [Xenomai-core] [PATCH 00/12] Generic fast xnsynch support & more Jan Kiszka
2008-10-16 15:46 ` [Xenomai-core] [PATCH 01/12] Generic thread registration Jan Kiszka
2008-10-16 19:26 ` Gilles Chanteperdrix
2008-10-16 21:55 ` Jan Kiszka
2008-10-16 15:46 ` [Xenomai-core] [PATCH 02/12] Handle-based xeno_get_current service Jan Kiszka
2008-10-16 19:36 ` Gilles Chanteperdrix
2008-10-16 15:46 ` [Xenomai-core] [PATCH 03/12] Remove xnarch_atomic_intptr Jan Kiszka
2008-10-16 19:37 ` Gilles Chanteperdrix
2008-10-16 15:46 ` [Xenomai-core] [PATCH 04/12] Spread xeno_set_current under all skins Jan Kiszka
2008-10-16 19:38 ` Gilles Chanteperdrix
2008-10-16 15:46 ` [Xenomai-core] [PATCH 05/12] Factor out xnsynch_acquire/release Jan Kiszka
2008-10-16 19:46 ` Gilles Chanteperdrix
2008-10-16 15:46 ` [Xenomai-core] [PATCH 06/12] Lockless fast path for xnsynch_acquire/release Jan Kiszka
2008-10-16 19:57 ` Gilles Chanteperdrix
2008-10-16 21:55 ` Jan Kiszka
2008-10-16 21:58 ` Gilles Chanteperdrix
2008-10-16 22:07 ` Jan Kiszka [this message]
2008-10-16 22:12 ` Gilles Chanteperdrix
2008-10-16 15:46 ` [Xenomai-core] [PATCH 07/12] Convert POSIX skin to fast xnsynch Jan Kiszka
2008-10-16 20:05 ` Gilles Chanteperdrix
2008-10-16 21:56 ` Jan Kiszka
2008-10-16 15:46 ` [Xenomai-core] [PATCH 08/12] Use fast xnsynch with native skin Jan Kiszka
2008-10-16 20:13 ` Gilles Chanteperdrix
2008-10-16 22:53 ` Jan Kiszka
2008-10-17 9:07 ` Gilles Chanteperdrix
2008-10-17 10:56 ` Jan Kiszka
2008-10-17 10:58 ` Gilles Chanteperdrix
2008-10-17 11:11 ` Jan Kiszka
2008-10-17 11:14 ` Gilles Chanteperdrix
2008-10-17 11:21 ` Jan Kiszka
2008-10-17 11:37 ` Gilles Chanteperdrix
2008-10-16 15:46 ` [Xenomai-core] [PATCH 09/12] Optionally replace pthread_getspecific with TLS variables Jan Kiszka
2008-10-16 20:18 ` Gilles Chanteperdrix
2008-10-16 22:26 ` Jan Kiszka
2008-10-17 15:02 ` Jan Kiszka
2008-10-16 15:46 ` [Xenomai-core] [PATCH 10/12] Report current shadow thread mode to user space Jan Kiszka
2008-10-16 20:23 ` Gilles Chanteperdrix
2008-10-16 23:10 ` Jan Kiszka
2008-10-17 7:32 ` Jan Kiszka
2008-10-16 15:46 ` [Xenomai-core] [PATCH 11/12] Ensure mode switch in mutex fast paths Jan Kiszka
2008-10-16 20:27 ` Gilles Chanteperdrix
2008-10-16 15:46 ` [Xenomai-core] [PATCH 12/12] Enable SMP support for user libs by default Jan Kiszka
2008-10-16 20:29 ` Gilles Chanteperdrix
2008-10-16 22:14 ` Jan Kiszka
2008-10-16 16:21 ` [Xenomai-core] [PATCH 00/12] Generic fast xnsynch support & more Gilles Chanteperdrix
2008-10-17 12:28 ` Gilles Chanteperdrix
2008-10-17 12:44 ` Jan Kiszka
2008-10-17 12:51 ` Gilles Chanteperdrix
2008-10-17 13:31 ` Jan Kiszka
2008-10-17 13:36 ` Philippe Gerum
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