56 lines
2.0 KiB
C
56 lines
2.0 KiB
C
/* lib/getloadavg.c - bsd-games implementation of getloadavg.
|
|
*
|
|
* Copyright (c) 1998, 1999 Joseph Samuel Myers.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#ifndef HAVE_getloadavg
|
|
int
|
|
getloadavg(double loadavg[], int nelem)
|
|
{
|
|
double load_averages[3];
|
|
FILE *fp;
|
|
int count;
|
|
int i;
|
|
int nc;
|
|
fp = fopen("/proc/loadavg", "r");
|
|
if (fp == NULL)
|
|
return -1;
|
|
count = fscanf(fp, "%lf%lf%lf", &(load_averages[0]), &(load_averages[1]),
|
|
&(load_averages[2]));
|
|
fclose(fp);
|
|
if ((count == EOF) || (count == 0))
|
|
return -1;
|
|
nc = ((nelem < count) ? nelem : count);
|
|
for (i = 0; i < nc; i++)
|
|
loadavg[i] = load_averages[i];
|
|
return nc;
|
|
}
|
|
#endif
|