books/apitue/sample-code/13/load.c

36 lines
843 B
C
Raw Normal View History

2024-01-20 14:39:54 +00:00
/* This file is part of the sample code and exercises
* used by the class "Advanced Programming in the UNIX
* Environment" taught by Jan Schaumann
* <jschauma@netmeister.org> at Stevens Institute of
* Technology.
*
* This file is in the public domain.
*
* You don't have to, but if you feel like
* acknowledging where you got this code, you may
* reference me by name, email address, or point
* people to the course website:
* https://stevens.netmeister.org/631/
*/
/* Similar to what uptime(1) or w(1) print. */
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#define INTERVALS 3
int
main() {
double loadavg[INTERVALS];
if (getloadavg(loadavg, INTERVALS) == -1) {
err(EXIT_FAILURE, "getloadavg");
/* NOTREACHED */
}
(void)printf("%lf %lf %lf\n", loadavg[0], loadavg[1], loadavg[2]);
return EXIT_SUCCESS;
}