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      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	"@(#)lwp_info.c	1.8	05/06/08 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