xref: /onnv-gate/usr/src/lib/libc/port/gen/getrusage.c (revision 0:68f95e015346)
1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate  * CDDL HEADER START
3*0Sstevel@tonic-gate  *
4*0Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*0Sstevel@tonic-gate  * with the License.
8*0Sstevel@tonic-gate  *
9*0Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate  * and limitations under the License.
13*0Sstevel@tonic-gate  *
14*0Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate  *
20*0Sstevel@tonic-gate  * CDDL HEADER END
21*0Sstevel@tonic-gate  */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24*0Sstevel@tonic-gate  * Use is subject to license terms.
25*0Sstevel@tonic-gate  */
26*0Sstevel@tonic-gate 
27*0Sstevel@tonic-gate /*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
28*0Sstevel@tonic-gate /*	  All Rights Reserved  	*/
29*0Sstevel@tonic-gate 
30*0Sstevel@tonic-gate /*
31*0Sstevel@tonic-gate  * Portions of this source code were derived from Berkeley 4.3 BSD
32*0Sstevel@tonic-gate  * under license from the Regents of the University of California.
33*0Sstevel@tonic-gate  */
34*0Sstevel@tonic-gate 
35*0Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
36*0Sstevel@tonic-gate 
37*0Sstevel@tonic-gate #include "synonyms.h"
38*0Sstevel@tonic-gate 
39*0Sstevel@tonic-gate /*
40*0Sstevel@tonic-gate  * Compatibility lib for BSD's getrusgae(). Only the
41*0Sstevel@tonic-gate  * CPU time usage is supported for RUSAGE_CHILDREN, and hence does not
42*0Sstevel@tonic-gate  * fully support BSD's rusage semantics.
43*0Sstevel@tonic-gate  */
44*0Sstevel@tonic-gate 
45*0Sstevel@tonic-gate #include <sys/types.h>
46*0Sstevel@tonic-gate #include <sys/time.h>
47*0Sstevel@tonic-gate #include <sys/times.h>
48*0Sstevel@tonic-gate #include <stdio.h>
49*0Sstevel@tonic-gate #include <sys/param.h>
50*0Sstevel@tonic-gate #include <errno.h>
51*0Sstevel@tonic-gate #include <sys/resource.h>
52*0Sstevel@tonic-gate #include <fcntl.h>
53*0Sstevel@tonic-gate #include <sys/fcntl.h>
54*0Sstevel@tonic-gate #include <procfs.h>
55*0Sstevel@tonic-gate #include <string.h>
56*0Sstevel@tonic-gate #include <unistd.h>
57*0Sstevel@tonic-gate 
58*0Sstevel@tonic-gate int __rusagesys(int, struct rusage *);
59*0Sstevel@tonic-gate 
60*0Sstevel@tonic-gate int
61*0Sstevel@tonic-gate getrusage(int who, struct rusage *rusage)
62*0Sstevel@tonic-gate {
63*0Sstevel@tonic-gate 	switch (who) {
64*0Sstevel@tonic-gate 
65*0Sstevel@tonic-gate 	case RUSAGE_SELF:
66*0Sstevel@tonic-gate 		return (__rusagesys(_RUSAGESYS_GETRUSAGE, rusage));
67*0Sstevel@tonic-gate 
68*0Sstevel@tonic-gate 	case RUSAGE_LWP:
69*0Sstevel@tonic-gate 		return (__rusagesys(_RUSAGESYS_GETRUSAGE_LWP, rusage));
70*0Sstevel@tonic-gate 
71*0Sstevel@tonic-gate 	case RUSAGE_CHILDREN:
72*0Sstevel@tonic-gate 		return (__rusagesys(_RUSAGESYS_GETRUSAGE_CHLD, rusage));
73*0Sstevel@tonic-gate 
74*0Sstevel@tonic-gate 	default:
75*0Sstevel@tonic-gate 		errno = EINVAL;
76*0Sstevel@tonic-gate 		return (-1);
77*0Sstevel@tonic-gate 	}
78*0Sstevel@tonic-gate }
79