From owner-freebsd-arch  Mon Nov 11  0:16:47 2002
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To: Kirk McKusick <mckusick@McKusick.COM>
Cc: arch@FreeBSD.ORG, bostic@sleepycat.com (Keith Bostic)
Subject: Re: Shared-memory version of <sys/queue.h> macros 
In-Reply-To: Your message of "Sun, 10 Nov 2002 09:32:35 PST."
             <200211101732.gAAHWZ59035339@beastie.mckusick.com> 
Date: Mon, 11 Nov 2002 09:16:19 +0100
Message-ID: <50080.1037002579@critter.freebsd.dk>
From: Poul-Henning Kamp <phk@critter.freebsd.dk>
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In message <200211101732.gAAHWZ59035339@beastie.mckusick.com>, Kirk McKusick wr
ites:
>I am proposing to add a new version of the <sys/queue.h> macros that
>are designed to work in shared memory.

Sounds useful.

There is one thing about sys/queue I don't like:

	#define SLIST_HEAD(name, type)                                  \
	struct name {                                                   \
		struct type *slh_first; /* first element */             \
	}

In fact I positively hate this because a grep for 
	"struct[ \t]*foobar"
fails to trigger on
	SLIST_HEAD(foobarhead, foobar);

I would really like to see that fixed.

As for various standards groups standarizing this or not, I would
say that it doesn't surprise me that they don't:  It would be useful
if they did.

By not standardizing it, they make sure that we have a mix of autoconf
crap and incompatible rotting versions all over the place, something
which is sure to generate more need for standardization work. :-(

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.

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