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CONDOR
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loop.c
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1989-05-15
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/*
** Copyright 1986, 1987, 1988, 1989 University of Wisconsin
**
** Permission to use, copy, modify, and distribute this software and its
** documentation for any purpose and without fee is hereby granted,
** provided that the above copyright notice appear in all copies and that
** both that copyright notice and this permission notice appear in
** supporting documentation, and that the name of the University of
** Wisconsin not be used in advertising or publicity pertaining to
** distribution of the software without specific, written prior
** permission. The University of Wisconsin makes no representations about
** the suitability of this software for any purpose. It is provided "as
** is" without express or implied warranty.
**
** THE UNIVERSITY OF WISCONSIN DISCLAIMS ALL WARRANTIES WITH REGARD TO
** THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
** FITNESS. IN NO EVENT SHALL THE UNIVERSITY OF WISCONSIN BE LIABLE FOR
** ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
** WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
** ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
** OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
**
** Authors: Allan Bricker and Michael J. Litzkow,
** University of Wisconsin, Computer Sciences Dept.
**
*/
/*
** This program just computes for an approximate amount of time, then
** exits with status 0. The approximate time in seconds is specified
** on the command line. It just counts in a loop, so the actual time
** will vary greatly depending on what kind of CPU it gets run on.
*/
#include <stdio.h>
main( argc, argv)
int argc;
char *argv[];
{
int count;
if( argc != 2 )
usage();
if( (count=atoi(argv[1])) <= 0 )
usage();
do_loop( count );
exit( 0 );
}
do_loop( count )
int count;
{
int i;
for( i=0; i<count; i++ )
waste_a_second();
}
waste_a_second()
{
int i;
for( i=0; i<250000; i++ )
;
}
usage()
{
printf( "Usage: loop count\n" );
exit( 1 );
}