<sys/queue.h> bikeshed proposal

Yar Tikhiy yar at comp.chem.msu.su
Thu Mar 15 18:29:27 UTC 2007


On Thu, Mar 15, 2007 at 10:07:43AM -0700, Julian Elischer wrote:
> Yar Tikhiy wrote:
> >On Tue, Mar 13, 2007 at 09:38:05AM +0000, Poul-Henning Kamp wrote:
> >>In message <39968.1173776514 at critter.freebsd.dk>, Poul-Henning Kamp 
> >>writes:
> >>>It has always bothered me that some of the TAILQ macros need to
> >>>know the struct name of the header type.
> >
> >Yeah, <sys/queue.h> can present a challenge in understanding an
> >implementation of basic data structures and related algos. :-)
> >You thought that tqe_prev points to the whole entry structure when
> >making the patch, didn't you?
> >
> >Personally, I cannot explain to myself why in the double-linked
> >structs the prev member points to the next member in the previous
> >list element and not to the previous list element itself.  Could
> >anybody with CS education explain merits of the current approach?
> >I can only see that now we have to go to the element before the
> >previous one for a pointer to the latter.  I'm not going to dispute
> >the current way of things, just curious.
> 
> kirk can tell you that I believe..

I'm afraid he can but has no time to.
In addition, Kirk would be upset by having to deal with a bunch of
losers who don't have enough collective knowledge to figure out a
basic thing!  We seem to be able to prove we aren't such losers. :-)

-- 
Yar


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