From owner-freebsd-hackers  Thu Jul 26 15: 8:19 2001
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Date: Thu, 26 Jul 2001 15:08:36 -0700
From: Arun Sharma <arun@sharmas.dhs.org>
To: John Baldwin <jhb@FreeBSD.org>
Cc: hackers@FreeBSD.org
Subject: Re: Need a clean room implementation of this function
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In-Reply-To: <XFMail.010726144324.jhb@FreeBSD.org>; from jhb@FreeBSD.org on Thu, Jul 26, 2001 at 02:43:24PM -0700
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On Thu, Jul 26, 2001 at 02:43:24PM -0700, John Baldwin wrote:
> {
>         int val;
> 
>         do {
>                 val = *(int *)addr;
>         } while (atomic_cmpset_int(addr, val, val | (1 << nr) == 0);
>         return (val & (1 << nr));
> }

Thanks! I think that'd work. But code using BTS would be
more efficient (fewer cycles).

Many people asked me this question: the code I'm porting is:

http://www.intel.com/research/mrl/orp/

Please see my messages to java@freebsd.org about the port.

	-Arun


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