NetBSD-5.0.2/bin/csh/time.c
/* $NetBSD: time.c,v 1.17 2008/02/24 05:20:17 dholland Exp $ */
/*-
* Copyright (c) 1980, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)time.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: time.c,v 1.17 2008/02/24 05:20:17 dholland Exp $");
#endif
#endif /* not lint */
#ifndef NOT_CSH
#include <sys/types.h>
#include <stdarg.h>
#include "csh.h"
#include "extern.h"
#endif
/*
* C Shell - routines handling process timing and niceing
*/
static void pdeltat(FILE *, struct timeval *, struct timeval *);
static void pcsecs(FILE *, long);
extern char *strpct(u_long, u_long, u_int);
#ifndef NOT_CSH
void
settimes(void)
{
struct rusage ruch;
(void)gettimeofday(&time0, NULL);
(void)getrusage(RUSAGE_SELF, &ru0);
(void)getrusage(RUSAGE_CHILDREN, &ruch);
ruadd(&ru0, &ruch);
}
/*
* dotime is only called if it is truly a builtin function and not a
* prefix to another command
*/
void
/*ARGSUSED*/
dotime(Char **v, struct command *t)
{
struct rusage ru1, ruch;
struct timeval timedol;
(void)getrusage(RUSAGE_SELF, &ru1);
(void)getrusage(RUSAGE_CHILDREN, &ruch);
ruadd(&ru1, &ruch);
(void)gettimeofday(&timedol, NULL);
prusage(cshout, &ru0, &ru1, &timedol, &time0);
}
/*
* donice is only called when it on the line by itself or with a +- value
*/
void
/*ARGSUSED*/
donice(Char **v, struct command *t)
{
Char *cp;
int nval;
nval = 0;
v++;
cp = *v++;
if (cp == 0)
nval = 4;
else if (*v == 0 && any("+-", cp[0]))
nval = getn(cp);
(void)setpriority(PRIO_PROCESS, 0, nval);
}
void
ruadd(struct rusage *ru, struct rusage *ru2)
{
timeradd(&ru->ru_utime, &ru2->ru_utime, &ru->ru_utime);
timeradd(&ru->ru_stime, &ru2->ru_stime, &ru->ru_stime);
if (ru2->ru_maxrss > ru->ru_maxrss)
ru->ru_maxrss = ru2->ru_maxrss;
ru->ru_ixrss += ru2->ru_ixrss;
ru->ru_idrss += ru2->ru_idrss;
ru->ru_isrss += ru2->ru_isrss;
ru->ru_minflt += ru2->ru_minflt;
ru->ru_majflt += ru2->ru_majflt;
ru->ru_nswap += ru2->ru_nswap;
ru->ru_inblock += ru2->ru_inblock;
ru->ru_oublock += ru2->ru_oublock;
ru->ru_msgsnd += ru2->ru_msgsnd;
ru->ru_msgrcv += ru2->ru_msgrcv;
ru->ru_nsignals += ru2->ru_nsignals;
ru->ru_nvcsw += ru2->ru_nvcsw;
ru->ru_nivcsw += ru2->ru_nivcsw;
}
#endif /* NOT_CSH */
void
prusage(FILE *fp, struct rusage *r0, struct rusage *r1, struct timeval *e,
struct timeval *b)
{
#ifndef NOT_CSH
struct varent *vp;
#endif
const char *cp;
long i;
time_t t;
int ms;
cp = "%Uu %Ss %E %P %X+%Dk %I+%Oio %Fpf+%Ww";
ms = (e->tv_sec - b->tv_sec) * 100 + (e->tv_usec - b->tv_usec) / 10000;
t = (r1->ru_utime.tv_sec - r0->ru_utime.tv_sec) * 100 +
(r1->ru_utime.tv_usec - r0->ru_utime.tv_usec) / 10000 +
(r1->ru_stime.tv_sec - r0->ru_stime.tv_sec) * 100 +
(r1->ru_stime.tv_usec - r0->ru_stime.tv_usec) / 10000;
#ifndef NOT_CSH
vp = adrof(STRtime);
if (vp && vp->vec[0] && vp->vec[1])
cp = short2str(vp->vec[1]);
#endif
for (; *cp; cp++)
if (*cp != '%')
(void) fputc(*cp, fp);
else if (cp[1])
switch (*++cp) {
case 'D': /* (average) unshared data size */
(void)fprintf(fp, "%ld", t == 0 ? 0L :
(long)((r1->ru_idrss + r1->ru_isrss -
(r0->ru_idrss + r0->ru_isrss)) / t));
break;
case 'E': /* elapsed (wall-clock) time */
pcsecs(fp, (long) ms);
break;
case 'F': /* page faults */
(void)fprintf(fp, "%ld", r1->ru_majflt - r0->ru_majflt);
break;
case 'I': /* FS blocks in */
(void)fprintf(fp, "%ld", r1->ru_inblock - r0->ru_inblock);
break;
case 'K': /* (average) total data memory used */
(void)fprintf(fp, "%ld", t == 0 ? 0L :
(long)(((r1->ru_ixrss + r1->ru_isrss + r1->ru_idrss) -
(r0->ru_ixrss + r0->ru_idrss + r0->ru_isrss)) / t));
break;
case 'M': /* max. Resident Set Size */
(void)fprintf(fp, "%ld", r1->ru_maxrss / 2L);
break;
case 'O': /* FS blocks out */
(void)fprintf(fp, "%ld", r1->ru_oublock - r0->ru_oublock);
break;
case 'P': /* percent time spent running */
/* check if it did not run at all */
if (ms == 0) {
(void)fputs("0.0%", fp);
} else {
(void)fputs(strpct((ulong)t, (ulong)ms, 1), fp);
}
break;
case 'R': /* page reclaims */
(void)fprintf(fp, "%ld", r1->ru_minflt - r0->ru_minflt);
break;
case 'S': /* system CPU time used */
pdeltat(fp, &r1->ru_stime, &r0->ru_stime);
break;
case 'U': /* user CPU time used */
pdeltat(fp, &r1->ru_utime, &r0->ru_utime);
break;
case 'W': /* number of swaps */
i = r1->ru_nswap - r0->ru_nswap;
(void)fprintf(fp, "%ld", i);
break;
case 'X': /* (average) shared text size */
(void)fprintf(fp, "%ld", t == 0 ? 0L :
(long)((r1->ru_ixrss - r0->ru_ixrss) / t));
break;
case 'c': /* num. involuntary context switches */
(void)fprintf(fp, "%ld", r1->ru_nivcsw - r0->ru_nivcsw);
break;
case 'k': /* number of signals received */
(void)fprintf(fp, "%ld", r1->ru_nsignals-r0->ru_nsignals);
break;
case 'r': /* socket messages received */
(void)fprintf(fp, "%ld", r1->ru_msgrcv - r0->ru_msgrcv);
break;
case 's': /* socket messages sent */
(void)fprintf(fp, "%ld", r1->ru_msgsnd - r0->ru_msgsnd);
break;
case 'w': /* num. voluntary context switches (waits) */
(void)fprintf(fp, "%ld", r1->ru_nvcsw - r0->ru_nvcsw);
break;
}
(void)fputc('\n', fp);
}
static void
pdeltat(FILE *fp, struct timeval *t1, struct timeval *t0)
{
struct timeval td;
timersub(t1, t0, &td);
(void)fprintf(fp, "%ld.%01ld", (long)td.tv_sec,
(long)(td.tv_usec / 100000));
}
#define P2DIG(fp, i) (void)fprintf(fp, "%d%d", (i) / 10, (i) % 10)
#ifndef NOT_CSH
void
psecs(long l)
{
int i;
i = l / 3600;
if (i) {
(void)fprintf(cshout, "%d:", i);
i = l % 3600;
P2DIG(cshout, i / 60);
goto minsec;
}
i = l;
(void)fprintf(cshout, "%d", i / 60);
minsec:
i %= 60;
(void)fputc(':', cshout);
P2DIG(cshout, i);
}
#endif
static void
pcsecs(FILE *fp, long l) /* PWP: print mm:ss.dd, l is in sec*100 */
{
int i;
i = l / 360000;
if (i) {
(void)fprintf(fp, "%d:", i);
i = (l % 360000) / 100;
P2DIG(fp, i / 60);
goto minsec;
}
i = l / 100;
(void)fprintf(fp, "%d", i / 60);
minsec:
i %= 60;
(void)fputc(':', fp);
P2DIG(fp, i);
(void)fputc('.', fp);
P2DIG(fp, (int) (l % 100));
}