Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!uxc.cso.uiuc.edu!garcon!uicsrd.csrd.uiuc.edu!mcdaniel
From: mcdaniel@uicsrd.csrd.uiuc.edu (Tim McDaniel)
Newsgroups: comp.lang.c
Subject: Re: software delays (was: LINT won't do your debugging for you)
Message-ID: <1530@garcon.cso.uiuc.edu>
Date: 22 Jul 89 18:54:22 GMT
References: <713@srhqla.SR.COM> <3588@cps3xx.UUCP> <12724@bloom-beacon.MIT.EDU> <1640@frog.UUCP>
Sender: news@garcon.cso.uiuc.edu
Reply-To: mcdaniel@uicsrd.csrd.uiuc.edu (Tim McDaniel)
Organization: Center for Supercomputing R&D (Cedar), U. of Ill.
Lines: 18

In article <1640@frog.UUCP> john@frog.UUCP (John Woods) writes:
> The faster IOP version uses
>	#define STALL waste++
...
>Of course, some day the compiler is likely to notice that all of those
>increments can be bundled up into a "waste += 32" at the end of the function
>and then we'll be stuck... :-)

        /* #define volatile             /* use if non-pANS C compiler */
        volatile int waste = 0;
--
"Let me control a planet's oxygen supply, and I don't care who makes
the laws." - GREAT CTHUHLU'S STARRY WISDOM BAND (via Roger Leroux)
 __
   \         Tim, the Bizarre and Oddly-Dressed Enchanter
    \               mcdaniel@uicsrd.csrd.uiuc.edu
    /\       mcdaniel%uicsrd@{uxc.cso.uiuc.edu,uiuc.csnet}
  _/  \_     {uunet,convex,pur-ee}!uiucuxc!uicsrd!mcdaniel