From: Christophe Saout <christophe@saout.de>
To: Martijn Sipkema <martijn@entmoot.nl>
Cc: linux-kernel@vger.kernel.org
Subject: Re: waiting on a condition
Date: Wed, 13 Oct 2004 17:34:39 +0200 [thread overview]
Message-ID: <1097681679.4724.26.camel@leto.cs.pocnet.net> (raw)
In-Reply-To: <02bb01c4b138$8a786f10$161b14ac@boromir>
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Am Mittwoch, den 13.10.2004, 16:23 +0100 schrieb Martijn Sipkema:
> I'd like to do something similar as can be done using a POSIX condition
> variable in the kernel, i.e. wait for some condition to become true. The
> pthread_cond_wait() function allows atomically unlocking a mutex and
> waiting on a condition. I think I should do something like:
> (the condition is updated from an interrupt handler)
You can take a look at reiser4, it has such an implementation. It's
called kcond (fs/reiser4/kcond.c). It's using semaphores, waitqueues and
a spinlock to emulate POSIX conditions.
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prev parent reply other threads:[~2004-10-13 15:39 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-13 15:23 waiting on a condition Martijn Sipkema
2004-10-13 14:55 ` Neil Horman
2004-10-13 15:05 ` Duncan Sands
2004-10-13 15:30 ` Peter W. Morreale
2004-10-13 20:58 ` Martijn Sipkema
2004-10-13 20:58 ` Martijn Sipkema
2004-10-14 15:37 ` Davide Rossetti
2004-10-14 15:49 ` Richard B. Johnson
2004-10-15 13:13 ` Alan Cox
2004-10-13 15:34 ` Christophe Saout [this message]
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