Date: Wed, 10 Oct 2001 10:23:50 -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.011010102350.jdp@polstra.com> In-Reply-To: <XFMail.011010101710.jhb@FreeBSD.org>
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John Baldwin wrote: > > One quick question. Now that we have a MI atomic operation interface one can > get from <machine/atomic.h> that includes atomic_cmpset_acq_int(), > atomic_add_acq_int(), and atomic_add_rel_int(), why not use these instead of > re-rolling the atomic operations each time? I realize that do to the quirky > nature of the 386, you would still have to have a hack for the x86 platform, > but at least for 486+ and other arch's you could just use the pre-existent API > so that we only have to code up atomic ops in one place. > > Comments? 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. John To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-ia64" in the body of the message
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