Shared/exclusive (rw) locks
ngl
ngl at ur.ru
Mon Jul 5 22:05:50 PDT 2004
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 at freebsd.org>
To: "ngl" <ngl at ur.ru>
Cc: <freebsd-stable at 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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