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Date: Tue, 6 Jul 2004 15:41:34 +1000
From: Tim Robbins <tjr@freebsd.org>
To: ngl <ngl@ur.ru>
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cc: freebsd-stable@freebsd.org
Subject: Re: Shared/exclusive (rw) locks
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On Tue, Jul 06, 2004 at 11:05:35AM +0600, ngl wrote:
> Thanks
> 
> I've found it too.
> 
> But
> /*
>  * The general lock structure.  Provides for multiple shared locks,
>  * upgrading from shared to exclusive, and sleeping until the lock
>  * can be gained. The simple locks are defined in <machine/param.h>.
>  */
> 
> What means sleeping ? I need spinlock. 
> I cannot allow to fall asleep to kernel thread.

You'll need to use simplelocks or spls then, as appropriate to the
situation.


Tim

P.S.: This probably isn't the right mailing list for this discussion.