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Mail Archives: djgpp/2002/04/24/01:45:08

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From: "Alex Vinokur" <alexvn AT bigfoot DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: uclock_t & gcc 3.0.4 on Windows-2000
Date: Wed, 24 Apr 2002 08:26:45 +0200
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"Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il> wrote in message news:Pine DOT SUN DOT 3 DOT 91 DOT 1020424083902 DOT 4915B-100000 AT is...
|
| On Wed, 24 Apr 2002, Alex Vinokur wrote:
|
| > | > So, what is alternative ?
| > | > * rusage ? Does it work ?
| > | > * something else ?
| > |
| > | It depends on what are you trying to accomplish.  Can you tell some
| > | more details?
| >
| > For instance, something like (pseudo-code) :
| >
| >
| > void foo ()
| > {
| >     start_time = some-get-time-function();
| >     // stuff
| >     end_time = some-get-time-function();
| >     assert (start_time  <= end_time);
| >     cout << (end_time  -  start_time) << endl;
| > }
| >
| > int main ()
| > {
| >     for (int i = 0; i < TOTAL-ITERATIONS; i++)
| >    {
| >       foo ();
| >    }
| > }
|
| Yes, but what is this for?  This is a toy program; I was interested to
| hear about some real-life application which needs that.
|
| The important question is: can you settle for the basic 54-msec
| resolution of the standard PC clock?  If you can, use `clock' (or
| compile with -pg and use Gprof); if not, you will have to write some
| inline assembly using the RDTSC (sp?) instruction.  (I think someone
| posted such assembly here some time ago, so searching the DJGPP archives
| might find it.)


Here is my problem.

C/C++ Perfometer at http://alexvn.freeservers.com/s1/perfometer.html
   has been compiled with gpp-2.95.3  and works OK on Windows98.
  One of get-time-function()'s is uclock().

I compiled this program with gpp-3.0.4 (with some gpp-3.0.4-related updates) on Windows2000.
However, it doesn't work on Windows2000 because of uclock().

====================
  Alex Vinokur
    http://up.to/alexvn
    http://go.to/alexv_math
    mailto:alexvn AT bigfoot DOT com
    mailto:alexvn AT go DOT to
  ====================




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