From: Nigel Roles <nigel@9fs.org>
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Subject: Re: [9fans] Sleep-complexity
Date: Mon, 9 May 2005 14:29:10 +0100 [thread overview]
Message-ID: <427F65A6.2010803@9fs.org> (raw)
In-Reply-To: <8dc25d6e6eb4100818b09a511477f06e@terzarima.net>
>the assumption usually made in practice is a little more subtle:
>int <= long[=32] < long long [=64]. most older programs tended
>to use int for things such as for loop values, that probably needed to be
>at least 16 bits, but might not need to be as much as 32.
>by contrast, a `long' quite often needed to be 32 bits, and often
>that was `no more, no less'.
>
>
>
I'll probably regret this, but the gcc x86_64 approach hasn't worked out
too badly.
When we did our 64 bit port recently, it was only cases of trying to
stash a pointer
in an int which bit us. When I say us, I mean the authors of certain
Linux packages. At one time I thought there was a maxim of "int is the
efficient
machine size, long is big enough to hold a pointer", so gcc x86_64 can
claim to
meet that reasoning.
Nigel
next prev parent reply other threads:[~2005-05-09 13:29 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-08 12:03 Christoph Lohmann
2005-05-08 12:51 ` Sergey Reva
2005-05-08 16:50 ` Russ Cox
2005-05-08 17:28 ` Dan Cross
2005-05-08 18:56 ` jmk
2005-05-08 19:21 ` Bruce Ellis
2005-05-08 20:54 ` Charles Forsyth
2005-05-08 21:06 ` Charles Forsyth
2005-05-08 22:40 ` Dan Cross
2005-05-08 22:59 ` geoff
2005-05-09 7:28 ` Richard Miller
2005-05-09 13:14 ` Brantley Coile
2005-05-09 16:45 ` Mike Haertel
2005-05-09 20:10 ` Bruce Ellis
2005-05-09 22:46 ` Charles Forsyth
2005-05-09 7:41 ` David Tolpin
2005-05-08 21:12 ` Charles Forsyth
2005-05-09 13:29 ` Nigel Roles [this message]
2005-05-09 14:03 ` Charles Forsyth
2005-05-10 17:09 ` boyd, rounin
2005-05-10 17:15 ` jmk
2005-05-10 18:34 ` boyd, rounin
2005-05-10 18:39 ` rog
2005-05-10 19:27 ` Ronald G. Minnich
2005-05-10 21:02 ` David Leimbach
2005-05-10 21:20 ` Bruce Ellis
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