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/*
* Copyright (c) 2007 - 2021 Joseph Gaeddert
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdio.h>
#include <sys/resource.h>
// null benchmark
void benchmark_null(struct rusage *_start,
struct rusage *_finish,
unsigned long int *_num_iterations)
{
unsigned long int i;
*_num_iterations *= 100;
getrusage(RUSAGE_SELF, _start);
unsigned int x = 0;
for (i=0; i<*_num_iterations; i++) {
// perform mindless task
x <<= 1;
x |= 1;
x &= 0xff;
x ^= 0xff;
}
*_num_iterations += (x & 0x1234) ? 0 : 1;
getrusage(RUSAGE_SELF, _finish);
}
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