xref: /titanic_50/usr/src/uts/common/syscall/lwp_info.c (revision 275c9da86e89f8abf71135cf63d9fc23671b2e60)
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 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
28 /*	  All Rights Reserved	*/
29 
30 
31 #pragma ident	"%Z%%M%	%I%	%E% SMI"
32 
33 #include <sys/param.h>
34 #include <sys/types.h>
35 #include <sys/sysmacros.h>
36 #include <sys/systm.h>
37 #include <sys/errno.h>
38 #include <sys/proc.h>
39 #include <sys/time.h>
40 #include <sys/debug.h>
41 #include <sys/model.h>
42 #include <sys/msacct.h>
43 
44 /*
45  * Get the time accounting information for the calling LWP.
46  */
47 int
48 lwp_info(timestruc_t *tvp)
49 {
50 	timestruc_t tv[2];
51 	hrtime_t hrutime, hrstime;
52 	klwp_t *lwp = ttolwp(curthread);
53 
54 	hrutime = lwp->lwp_mstate.ms_acct[LMS_USER];
55 	hrstime = lwp->lwp_mstate.ms_acct[LMS_SYSTEM] +
56 	    lwp->lwp_mstate.ms_acct[LMS_TRAP];
57 	scalehrtime(&hrutime);
58 	scalehrtime(&hrstime);
59 
60 	hrt2ts(hrutime, &tv[0]);
61 	hrt2ts(hrstime, &tv[1]);
62 
63 	if (get_udatamodel() == DATAMODEL_NATIVE) {
64 		if (copyout(tv, tvp, sizeof (tv)))
65 			return (set_errno(EFAULT));
66 	} else {
67 		timestruc32_t tv32[2];
68 
69 		if (TIMESPEC_OVERFLOW(&tv[0]) ||
70 		    TIMESPEC_OVERFLOW(&tv[1]))
71 			return (set_errno(EOVERFLOW));	/* unlikely */
72 
73 		TIMESPEC_TO_TIMESPEC32(&tv32[0], &tv[0]);
74 		TIMESPEC_TO_TIMESPEC32(&tv32[1], &tv[1]);
75 
76 		if (copyout(tv32, tvp, sizeof (tv32)))
77 			return (set_errno(EFAULT));
78 	}
79 	return (0);
80 }
81