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Re: winbase.h (ilockexch)

From: Vaclav Haisman <V dot Haisman at sh dot cvut dot cz>
To: cygwin-patches at cygwin dot com
Date: Wed, 1 Jun 2005 02:01:56 +0200 (CEST)
Subject: Re: winbase.h (ilockexch)
References: <20050601004223.I56374@logout.sh.cvut.cz> <20050531230512.GH9864@trixie.casa.cgf.cx>

I should have googled a bit more before I sent the patch. It seems that even
though xchg could be used it is not being used becasue it is slower than
cmpxchg imlementation of InterlockedExchange. I thus withdraw the patch.

VH.

On Tue, 31 May 2005, Christopher Faylor wrote:

> On Wed, Jun 01, 2005 at 12:52:26AM +0200, Vaclav Haisman wrote:
> >I think that ilockexch() in winbase.h should look like what is in my
> >patch.  Explicit lock prefix is not needed because xchg instruction
> >sets LOCK# signal implicitly.
>
> A similar implementation in the linux kernel seems to disagree with you.
>
> cgf
>

References:
- winbase.h (ilockexch)
  - From: Vaclav Haisman
- Re: winbase.h (ilockexch)
  - From: Christopher Faylor

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