usr/src/lib/libbc/libc/compat/4.1/vtimes.c

   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 1990 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 #include <sys/time.h>
  30 #include <sys/resource.h>
  31
  32 /*
  33  * Backwards compatible vtimes.
  34  */
  35 struct vtimes {
  36         int     vm_utime;               /* user time (60'ths) */
  37         int     vm_stime;               /* system time (60'ths) */
  38         /* divide next two by utime+stime to get averages */
  39         unsigned vm_idsrss;             /* integral of d+s rss */
  40         unsigned vm_ixrss;              /* integral of text rss */
  41         int     vm_maxrss;              /* maximum rss */
  42         int     vm_majflt;              /* major page faults */
  43         int     vm_minflt;              /* minor page faults */
  44         int     vm_nswap;               /* number of swaps */
  45         int     vm_inblk;               /* block reads */
  46         int     vm_oublk;               /* block writes */
  47 };
  48
  49 static void     getvtimes(struct rusage *, struct vtimes *);
  50 static int      scale60(struct timeval *);
  51
  52 int
  53 vtimes(struct vtimes *par, struct vtimes *chi)
  54 {
  55         struct rusage ru;
  56
  57         if (par) {
  58                 if (getrusage(RUSAGE_SELF, &ru) < 0)
  59                         return (-1);
  60                 getvtimes(&ru, par);
  61         }
  62         if (chi) {
  63                 if (getrusage(RUSAGE_CHILDREN, &ru) < 0)
  64                         return (-1);
  65                 getvtimes(&ru, chi);
  66         }
  67         return (0);
  68 }
  69
  70 static void
  71 getvtimes(struct rusage *aru, struct vtimes *avt)
  72 {
  73
  74         avt->vm_utime = scale60(&aru->ru_utime);
  75         avt->vm_stime = scale60(&aru->ru_stime);
  76         avt->vm_idsrss = ((aru->ru_idrss+aru->ru_isrss) / 100) * 60;
  77         avt->vm_ixrss = aru->ru_ixrss / 100 * 60;
  78         avt->vm_maxrss = aru->ru_maxrss;
  79         avt->vm_majflt = aru->ru_majflt;
  80         avt->vm_minflt = aru->ru_minflt;
  81         avt->vm_nswap = aru->ru_nswap;
  82         avt->vm_inblk = aru->ru_inblock;
  83         avt->vm_oublk = aru->ru_oublock;
  84 }
  85
  86 static int
  87 scale60(struct timeval *tvp)
  88 {
  89
  90         return (tvp->tv_sec * 60 + tvp->tv_usec / 16667);
  91 }