File: [local] / src / usr.bin / systat / pigs.c (download)
Revision 1.19, Wed Nov 29 12:34:22 2006 UTC (17 years, 6 months ago) by miod
Branch: MAIN
Changes since 1.18: +3 -3 lines
Do not test for processes being swapped out since this can't happen anymore.
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/* $OpenBSD: pigs.c,v 1.19 2006/11/29 12:34:22 miod Exp $ */
/* $NetBSD: pigs.c,v 1.3 1995/04/29 05:54:50 cgd Exp $ */
/*-
* Copyright (c) 1980, 1992, 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.
*/
#ifndef lint
#if 0
static char sccsid[] = "@(#)pigs.c 8.2 (Berkeley) 9/23/93";
#endif
static char rcsid[] = "$OpenBSD: pigs.c,v 1.19 2006/11/29 12:34:22 miod Exp $";
#endif /* not lint */
/*
* Pigs display from Bill Reeves at Lucasfilm
*/
#include <sys/param.h>
#include <sys/dkstat.h>
#include <sys/resource.h>
#include <sys/dir.h>
#include <sys/time.h>
#include <sys/proc.h>
#include <sys/sysctl.h>
#include <curses.h>
#include <math.h>
#include <pwd.h>
#include <err.h>
#include <stdlib.h>
#include <string.h>
#include "extern.h"
#include "systat.h"
int compar(const void *, const void *);
static int nproc;
static struct p_times {
float pt_pctcpu;
struct kinfo_proc2 *pt_kp;
} *pt;
static long stime[CPUSTATES];
static double lccpu;
WINDOW *
openpigs(void)
{
return (subwin(stdscr, LINES-5-1, 0, 5, 0));
}
void
closepigs(WINDOW *w)
{
if (w == NULL)
return;
wclear(w);
wrefresh(w);
delwin(w);
}
void
showpigs(void)
{
int i, j, y, k;
struct kinfo_proc2 *kp;
float total;
int factor;
char *uname, *pname, pidname[30];
if (pt == NULL)
return;
/* Accumulate the percent of cpu per user. */
total = 0.0;
for (i = 0; i <= nproc; i++) {
/* Accumulate the percentage. */
total += pt[i].pt_pctcpu;
}
if (total < 1.0)
total = 1.0;
factor = 50.0/total;
qsort(pt, nproc + 1, sizeof (struct p_times), compar);
y = 1;
i = nproc + 1;
if (i > wnd->_maxy-1)
i = wnd->_maxy-1;
for (k = 0; i > 0 && pt[k].pt_pctcpu > 0.01; i--, y++, k++) {
kp = pt[k].pt_kp;
if (kp == NULL) {
uname = "";
pname = "<idle>";
} else {
uname = user_from_uid(kp->p_uid, 0);
pname = kp->p_comm;
}
wmove(wnd, y, 0);
wclrtoeol(wnd);
mvwaddstr(wnd, y, 0, uname);
snprintf(pidname, sizeof pidname, "%10.10s", pname);
mvwaddstr(wnd, y, 9, pidname);
wmove(wnd, y, 20);
for (j = pt[k].pt_pctcpu*factor + 0.5; j > 0; j--)
waddch(wnd, 'X');
}
wmove(wnd, y, 0); wclrtobot(wnd);
}
struct loadavg sysload;
int
initpigs(void)
{
static int sysload_mib[] = {CTL_VM, VM_LOADAVG};
static int cp_time_mib[] = { CTL_KERN, KERN_CPTIME };
static int ccpu_mib[] = { CTL_KERN, KERN_CCPU };
size_t size;
fixpt_t ccpu;
size = sizeof(stime);
(void) sysctl(cp_time_mib, 2, &stime, &size, NULL, 0);
size = sizeof(sysload);
(void) sysctl(sysload_mib, 2, &sysload, &size, NULL, 0);
size = sizeof(ccpu);
(void) sysctl(ccpu_mib, 2, &ccpu, &size, NULL, 0);
lccpu = log((double) ccpu / sysload.fscale);
return(1);
}
void
fetchpigs(void)
{
static int cp_time_mib[] = { CTL_KERN, KERN_CPTIME };
static int lastnproc = 0;
struct kinfo_proc2 *kpp;
long ctime[CPUSTATES];
double t;
int i;
size_t size;
float *pctp;
kpp = kvm_getproc2(kd, KERN_PROC_KTHREAD, 0, sizeof(*kpp), &nproc);
if (kpp == NULL) {
error("%s", kvm_geterr(kd));
if (pt)
free(pt);
return;
}
if (nproc > lastnproc) {
free(pt);
if ((pt =
malloc((nproc + 1) * sizeof(struct p_times))) == NULL) {
error("Out of memory");
die();
}
}
lastnproc = nproc;
/*
* calculate %cpu for each proc
*/
for (i = 0; i < nproc; i++) {
pt[i].pt_kp = &kpp[i];
pctp = &pt[i].pt_pctcpu;
if (kpp->p_swtime == 0)
*pctp = 0;
else
*pctp = ((double) kpp->p_pctcpu / sysload.fscale) /
(1.0 - exp(kpp->p_swtime * lccpu));
}
/*
* and for the imaginary "idle" process
*/
size = sizeof(ctime);
(void) sysctl(cp_time_mib, 2, &ctime, &size, NULL, 0);
t = 0;
for (i = 0; i < CPUSTATES; i++)
t += ctime[i] - stime[i];
if (t == 0.0)
t = 1.0;
pt[nproc].pt_kp = NULL;
pt[nproc].pt_pctcpu = (ctime[CP_IDLE] - stime[CP_IDLE]) / t;
for (i = 0; i < CPUSTATES; i++)
stime[i] = ctime[i];
}
void
labelpigs(void)
{
wmove(wnd, 0, 0);
wclrtoeol(wnd);
mvwaddstr(wnd, 0, 20,
"/0 /10 /20 /30 /40 /50 /60 /70 /80 /90 /100");
}
int
compar(const void *a, const void *b)
{
return (((struct p_times *)a)->pt_pctcpu >
((struct p_times *)b)->pt_pctcpu) ? -1 : 1;
}