xref: /titanic_41/usr/src/lib/libc/port/gen/getloadavg.c (revision 8b464eb836173b92f2b7a65623cd06c8c3c59289)
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, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
28 
29 #pragma weak getloadavg = _getloadavg
30 
31 #include "synonyms.h"
32 #include <sys/types.h>
33 #include <sys/param.h>
34 #include <sys/syscall.h>
35 #include <sys/loadavg.h>
36 #include <stdio.h>
37 #include <stdlib.h>
38 
39 /*
40  * getloadavg -- get the time averaged run queues from the system
41  */
42 int
43 getloadavg(double loadavg[], int nelem)
44 {
45 	int i, buf[LOADAVG_NSTATS];
46 
47 	if (nelem > LOADAVG_NSTATS)
48 		nelem = LOADAVG_NSTATS;
49 
50 	if ((nelem = __getloadavg(buf, nelem)) == -1)
51 		return (-1);
52 
53 	for (i = 0; i < nelem; i++)
54 		loadavg[i] = (double)buf[i] / FSCALE;
55 
56 	return (nelem);
57 }
58