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From: "ngl" <ngl@ur.ru>
To: "Tim Robbins" <tjr@freebsd.org>
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Date: Tue, 6 Jul 2004 11:05:35 +0600
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cc: freebsd-stable@freebsd.org
Subject: Re: Shared/exclusive (rw) locks
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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.
  
Thanks,

Nik
----- Original Message ----- 
From: "Tim Robbins" <tjr@freebsd.org>
To: "ngl" <ngl@ur.ru>
Cc: <freebsd-stable@freebsd.org>
Sent: Tuesday, July 06, 2004 11:00 AM
Subject: Re: Shared/exclusive (rw) locks


> On Tue, Jul 06, 2004 at 10:30:57AM +0600, ngl wrote:
> > Hello
> > 
> > What locks are in freebsd stable kernel ?
> > I have found only simplelock, what else ?
> 
> lockmgr() -- see /sys/kern/kern_lock.c.
> 
> 
> Tim
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