4.4BSD/usr/src/bin/csh/time.c
/*-
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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.
*/
#ifndef lint
static char sccsid[] = "@(#)time.c 8.1 (Berkeley) 5/31/93";
#endif /* not lint */
#include <sys/types.h>
#if __STDC__
# include <stdarg.h>
#else
# include <varargs.h>
#endif
#include "csh.h"
#include "extern.h"
/*
* C Shell - routines handling process timing and niceing
*/
static void pdeltat __P((struct timeval *, struct timeval *));
void
settimes()
{
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(v, t)
Char **v;
struct command *t;
{
struct timeval timedol;
struct rusage ru1, ruch;
(void) getrusage(RUSAGE_SELF, &ru1);
(void) getrusage(RUSAGE_CHILDREN, &ruch);
ruadd(&ru1, &ruch);
(void) gettimeofday(&timedol, NULL);
prusage(&ru0, &ru1, &timedol, &time0);
}
/*
* donice is only called when it on the line by itself or with a +- value
*/
void
/*ARGSUSED*/
donice(v, t)
Char **v;
struct command *t;
{
register Char *cp;
int 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(ru, ru2)
register struct rusage *ru, *ru2;
{
tvadd(&ru->ru_utime, &ru2->ru_utime);
tvadd(&ru->ru_stime, &ru2->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;
}
void
prusage(r0, r1, e, b)
register struct rusage *r0, *r1;
struct timeval *e, *b;
{
register time_t 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;
register char *cp;
register long i;
register struct varent *vp = adrof(STRtime);
int ms =
(e->tv_sec - b->tv_sec) * 100 + (e->tv_usec - b->tv_usec) / 10000;
cp = "%Uu %Ss %E %P %X+%Dk %I+%Oio %Fpf+%Ww";
if (vp && vp->vec[0] && vp->vec[1])
cp = short2str(vp->vec[1]);
for (; *cp; cp++)
if (*cp != '%')
(void) fputc(*cp, cshout);
else if (cp[1])
switch (*++cp) {
case 'U': /* user CPU time used */
pdeltat(&r1->ru_utime, &r0->ru_utime);
break;
case 'S': /* system CPU time used */
pdeltat(&r1->ru_stime, &r0->ru_stime);
break;
case 'E': /* elapsed (wall-clock) time */
pcsecs((long) ms);
break;
case 'P': /* percent time spent running */
/* check if it did not run at all */
i = (ms == 0) ? 0 : (t * 1000 / ms);
/* nn.n% */
(void) fprintf(cshout, "%ld.%01ld%%", i / 10, i % 10);
break;
case 'W': /* number of swaps */
i = r1->ru_nswap - r0->ru_nswap;
(void) fprintf(cshout, "%ld", i);
break;
case 'X': /* (average) shared text size */
(void) fprintf(cshout, "%ld", t == 0 ? 0L :
(r1->ru_ixrss - r0->ru_ixrss) / t);
break;
case 'D': /* (average) unshared data size */
(void) fprintf(cshout, "%ld", t == 0 ? 0L :
(r1->ru_idrss + r1->ru_isrss -
(r0->ru_idrss + r0->ru_isrss)) / t);
break;
case 'K': /* (average) total data memory used */
(void) fprintf(cshout, "%ld", t == 0 ? 0L :
((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(cshout, "%ld", r1->ru_maxrss / 2L);
break;
case 'F': /* page faults */
(void) fprintf(cshout, "%ld", r1->ru_majflt - r0->ru_majflt);
break;
case 'R': /* page reclaims */
(void) fprintf(cshout, "%ld", r1->ru_minflt - r0->ru_minflt);
break;
case 'I': /* FS blocks in */
(void) fprintf(cshout, "%ld", r1->ru_inblock - r0->ru_inblock);
break;
case 'O': /* FS blocks out */
(void) fprintf(cshout, "%ld", r1->ru_oublock - r0->ru_oublock);
break;
case 'r': /* socket messages recieved */
(void) fprintf(cshout, "%ld", r1->ru_msgrcv - r0->ru_msgrcv);
break;
case 's': /* socket messages sent */
(void) fprintf(cshout, "%ld", r1->ru_msgsnd - r0->ru_msgsnd);
break;
case 'k': /* number of signals recieved */
(void) fprintf(cshout, "%ld", r1->ru_nsignals-r0->ru_nsignals);
break;
case 'w': /* num. voluntary context switches (waits) */
(void) fprintf(cshout, "%ld", r1->ru_nvcsw - r0->ru_nvcsw);
break;
case 'c': /* num. involuntary context switches */
(void) fprintf(cshout, "%ld", r1->ru_nivcsw - r0->ru_nivcsw);
break;
}
(void) fputc('\n', cshout);
}
static void
pdeltat(t1, t0)
struct timeval *t1, *t0;
{
struct timeval td;
tvsub(&td, t1, t0);
(void) fprintf(cshout, "%d.%01d", td.tv_sec, td.tv_usec / 100000);
}
void
tvadd(tsum, t0)
struct timeval *tsum, *t0;
{
tsum->tv_sec += t0->tv_sec;
tsum->tv_usec += t0->tv_usec;
if (tsum->tv_usec > 1000000)
tsum->tv_sec++, tsum->tv_usec -= 1000000;
}
void
tvsub(tdiff, t1, t0)
struct timeval *tdiff, *t1, *t0;
{
tdiff->tv_sec = t1->tv_sec - t0->tv_sec;
tdiff->tv_usec = t1->tv_usec - t0->tv_usec;
if (tdiff->tv_usec < 0)
tdiff->tv_sec--, tdiff->tv_usec += 1000000;
}
#define P2DIG(i) (void) fprintf(cshout, "%d%d", (i) / 10, (i) % 10)
void
psecs(l)
long l;
{
register int i;
i = l / 3600;
if (i) {
(void) fprintf(cshout, "%d:", i);
i = l % 3600;
P2DIG(i / 60);
goto minsec;
}
i = l;
(void) fprintf(cshout, "%d", i / 60);
minsec:
i %= 60;
(void) fputc(':', cshout);
P2DIG(i);
}
void
pcsecs(l) /* PWP: print mm:ss.dd, l is in sec*100 */
long l;
{
register int i;
i = l / 360000;
if (i) {
(void) fprintf(cshout, "%d:", i);
i = (l % 360000) / 100;
P2DIG(i / 60);
goto minsec;
}
i = l / 100;
(void) fprintf(cshout, "%d", i / 60);
minsec:
i %= 60;
(void) fputc(':', cshout);
P2DIG(i);
(void) fputc('.', cshout);
P2DIG((int) (l % 100));
}