Date: Wed, 10 Oct 2001 12:07:28 -0700 (PDT) From: John Polstra <jdp@polstra.com> To: John Baldwin <jhb@FreeBSD.org> Cc: ia64@FreeBSD.org, Doug Rabson <dfr@nlsystems.com> Subject: RE: rtld -- atomic ops Message-ID: <XFMail.011010120728.jdp@polstra.com> In-Reply-To: <XFMail.011010120330.jhb@FreeBSD.org>
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John Baldwin wrote: > On 10-Oct-01 John Polstra wrote: >>> >> That would be great, as far as I'm concerned. Note, the reader/writer >> locks used by the dynamic linker require something resembling an >> atomic compare and exchange operation. > > That's exactly what atomic_cmpset() is. :) Although it doesn't guarantee an > exchange (i.e., it doesn't return the old value if the cmp succeeds). That's not a problem. John To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-ia64" in the body of the message
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