compat/4.1/vtimes.c

	vtimes.c revision 5d54f3d8999eac1762fe0a8c7177d20f1f201fae
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 1990 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

#include <sys/time.h>
#include <sys/resource.h>

/*
 * Backwards compatible vtimes.
 */
struct vtimes {
    int vm_utime;       /* user time (60'ths) */
    int vm_stime;       /* system time (60'ths) */
    /* divide next two by utime+stime to get averages */
    unsigned vm_idsrss;     /* integral of d+s rss */
    unsigned vm_ixrss;      /* integral of text rss */
    int vm_maxrss;      /* maximum rss */
    int vm_majflt;      /* major page faults */
    int vm_minflt;      /* minor page faults */
    int vm_nswap;       /* number of swaps */
    int vm_inblk;       /* block reads */
    int vm_oublk;       /* block writes */
};

static void getvtimes(struct rusage *, struct vtimes *);
static int  scale60(struct timeval *);

int
vtimes(struct vtimes *par, struct vtimes *chi)
{
    struct rusage ru;

    if (par) {
        if (getrusage(RUSAGE_SELF, &ru) < 0)
            return (-1);
        getvtimes(&ru, par);
    }
    if (chi) {
        if (getrusage(RUSAGE_CHILDREN, &ru) < 0)
            return (-1);
        getvtimes(&ru, chi);
    }
    return (0);
}

static void
getvtimes(struct rusage *aru, struct vtimes *avt)
{

    avt->vm_utime = scale60(&aru->ru_utime);
    avt->vm_stime = scale60(&aru->ru_stime);
    avt->vm_idsrss = ((aru->ru_idrss+aru->ru_isrss) / 100) * 60;
    avt->vm_ixrss = aru->ru_ixrss / 100 * 60;
    avt->vm_maxrss = aru->ru_maxrss;
    avt->vm_majflt = aru->ru_majflt;
    avt->vm_minflt = aru->ru_minflt;
    avt->vm_nswap = aru->ru_nswap;
    avt->vm_inblk = aru->ru_inblock;
    avt->vm_oublk = aru->ru_oublock;
}

static int
scale60(struct timeval *tvp)
{

    return (tvp->tv_sec * 60 + tvp->tv_usec / 16667);
}