xref: /illumos-gate/usr/src/lib/libc/port/gen/getloadavg.c (revision e3ae4b35c024af1196582063ecee3ab79367227d)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #pragma weak _getloadavg = getloadavg
28 
29 #include "lint.h"
30 #include <sys/types.h>
31 #include <sys/param.h>
32 #include <sys/loadavg.h>
33 
34 /*
35  * getloadavg -- get the time averaged run queues from the system
36  */
37 int
38 getloadavg(double loadavg[], int nelem)
39 {
40 	extern int __getloadavg(int *buf, int nelem);
41 
42 	int i, buf[LOADAVG_NSTATS];
43 
44 	if (nelem > LOADAVG_NSTATS)
45 		nelem = LOADAVG_NSTATS;
46 
47 	if ((nelem = __getloadavg(buf, nelem)) == -1)
48 		return (-1);
49 
50 	for (i = 0; i < nelem; i++)
51 		loadavg[i] = (double)buf[i] / FSCALE;
52 
53 	return (nelem);
54 }
55