Date: Tue, 06 Feb 2001 09:04:38 -0800 From: Peter Wemm <peter@netplex.com.au> To: Garrett Wollman <wollman@khavrinen.lcs.mit.edu> Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/dev/awi awi.c src/sys/dev/ed if_ed.c src/sys/dev/fe if_fe.c src/sys/dev/ie if_ie.c src/sys/dev/lnc if_lnc.c src/sys/dev/pdq pdq_ifsubr.c src/sys/dev/ray if_ray.c src/sys/dev/sn if_sn.c src/sys/dev/snc dp83932.c src/sys/dev/usb ... Message-ID: <200102061704.f16H4ct48889@mobile.wemm.org> In-Reply-To: <200102061643.LAA32336@khavrinen.lcs.mit.edu>
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Garrett Wollman wrote: > <<On Tue, 06 Feb 2001 08:41:00 -0800, Peter Wemm <peter@netplex.com.au> said: > > > I thought LIST was doubly linked, which means we should be able to have a > > LIST_PREV(), right? SLIST is singly linked as is STAILQ. > > There is a LIST_PREV macro, but in order to traverse the entire list > backwards, one must first get to the very end, which requires a loop > in LIST and a single dereference in TAILQ. Do you know where we can get one? For completeness we should have it and it is missing from our queue.h. It could probably be a simple enough variant of the recently added TAILQ_PREV() macro - which still gives me a headache trying to understand. :-) > -GAWollman > > Cheers, -Peter -- Peter Wemm - peter@FreeBSD.org; peter@yahoo-inc.com; peter@netplex.com.au "All of this is for nothing if we don't go to the stars" - JMS/B5 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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