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/*
* Copyright (c) 2014 IBM Corporation.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*/
#include <stdio.h>
#include <time.h>
#include <sphde/sphtimer.h>
/*
* This is example showing the sphtimer.h usage and machine timer resolution.
*/
int
main (int argc, char *argv[])
{
sphtimer_t timer_freg = sphfastcpufreq ();
sphtimer_t timer_val = sphgettimer ();
sphtimer_t before, after;
struct timespec t100ms = { 0, 100000000L };
struct timespec t1000ms = { 1, 0 };
double seconds;
printf ("Time Base Frequency = %lld\nTime Base value = %lld\n\n",
timer_freg, timer_val);
/* warm up PLT */
nanosleep (&t100ms, NULL);
printf ("nanosleep 100ms - ");
before = sphgettimer ();
nanosleep (&t100ms, NULL);
after = sphgettimer ();
seconds = (double) (after - before) / (double) timer_freg;
printf ("delta=%012lld %f sec\n", (after - before), seconds);
printf ("nanosleep 1000ms - ");
before = sphgettimer ();
nanosleep (&t1000ms, NULL);
after = sphgettimer ();
seconds = (double) (after - before) / (double) timer_freg;
printf ("delta=%012lld %f sec\n", (after - before), seconds);
return 0;
}
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