/* $NetBSD: pigs.c,v 1.34 2021/11/09 09:18:02 nia 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.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)pigs.c 8.2 (Berkeley) 9/23/93";
#endif
__RCSID("$NetBSD: pigs.c,v 1.34 2021/11/09 09:18:02 nia Exp $");
#endif /* not lint */
/*
* Pigs display from Bill Reeves at Lucasfilm
*/
#include <sys/param.h>
#include <sys/sched.h>
#include <sys/sysctl.h>
#include <curses.h>
#include <math.h>
#include <pwd.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include "systat.h"
#include "extern.h"
#include "ps.h"
int compare_pctcpu(const void *, const void *);
int nproc;
struct p_times *pt;
uint64_t stime[CPUSTATES];
uint64_t mempages;
int fscale;
double lccpu;
#ifndef P_ZOMBIE
#define P_ZOMBIE(p) ((p)->p_stat == SZOMB)
#endif
WINDOW *
openpigs(void)
{
return (subwin(stdscr, -1, 0, 5, 0));
}
void
closepigs(WINDOW *w)
{
if (w == NULL)
return;
wclear(w);
wrefresh(w);
delwin(w);
}
void
showpigs(void)
{
int i, y, k;
struct kinfo_proc2 *kp;
float total;
int factor;
const char *pname;
char pidname[30], pidstr[7], usrstr[9];
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), compare_pctcpu);
y = 1;
i = nproc + 1;
if (i > getmaxy(wnd)-1)
i = getmaxy(wnd)-1;
for (k = 0; i > 0 && pt[k].pt_pctcpu > 0.01; i--, y++, k++) {
if (pt[k].pt_kp == NULL) {
pname = "<idle>";
pidstr[0] = '\0';
usrstr[0] = '\0';
}
else {
kp = pt[k].pt_kp;
pname = kp->p_comm;
snprintf(pidstr, sizeof(pidstr), "%5d", kp->p_pid);
snprintf(usrstr, sizeof(usrstr), "%8s",
user_from_uid(kp->p_uid, 0));
}
wmove(wnd, y, 0);
wclrtoeol(wnd);
mvwaddstr(wnd, y, 0, usrstr);
mvwaddstr(wnd, y, 9, pidstr);
(void)snprintf(pidname, sizeof(pidname), "%9.9s", pname);
mvwaddstr(wnd, y, 15, pidname);
mvwhline(wnd, y, 25, 'X', pt[k].pt_pctcpu*factor + 0.5);
}
wmove(wnd, y, 0); wclrtobot(wnd);
}
int
initpigs(void)
{
fixpt_t ccpu;
size_t len;
(void) fetch_cptime(stime);
len = sizeof(mempages);
if (sysctlbyname("hw.physmem64", &mempages, &len, NULL, 0))
error("can't get \"hw.physmem64\": %s", strerror(errno));
len = sizeof(ccpu);
if (sysctlbyname("kern.ccpu", &ccpu, &len, NULL, 0))
error("can't get \"kern.ccpu\": %s", strerror(errno));
len = sizeof(fscale);
if (sysctlbyname("kern.fscale", &fscale, &len, NULL, 0))
error("can't get \"kern.fscale\": %s", strerror(errno));
lccpu = log((double) ccpu / fscale);
return(1);
}
void
fetchpigs(void)
{
int i;
float *pctp;
struct kinfo_proc2 *kpp, *k;
u_int64_t cputime[CPUSTATES];
double t;
static int lastnproc = 0;
if ((kpp = kvm_getproc2(kd, KERN_PROC_ALL, 0, sizeof(*kpp),
&nproc)) == NULL) {
error("%s", kvm_geterr(kd));
free(pt);
return;
}
if (nproc > lastnproc) {
if (reallocarr(&pt, nproc + 1, sizeof(struct p_times)) != 0) {
error("Out of memory");
die(0);
}
}
lastnproc = nproc;
/*
* calculate %cpu for each proc
*/
for (i = 0; i < nproc; i++) {
pt[i].pt_kp = k = &kpp[i];
pctp = &pt[i].pt_pctcpu;
if (k->p_swtime == 0 || k->p_stat == SZOMB)
*pctp = 0;
else
*pctp = ((double) k->p_pctcpu /
fscale) / (1.0 - exp(k->p_swtime * lccpu));
}
/*
* and for the imaginary "idle" process
*/
(void) fetch_cptime(cputime);
t = 0;
for (i = 0; i < CPUSTATES; i++)
t += cputime[i] - stime[i];
if (t == 0.0)
t = 1.0;
pt[nproc].pt_kp = NULL;
pt[nproc].pt_pctcpu = (cputime[CP_IDLE] - stime[CP_IDLE]) / t;
for (i = 0; i < CPUSTATES; i++)
stime[i] = cputime[i];
}
void
labelpigs(void)
{
wmove(wnd, 0, 0);
wclrtoeol(wnd);
mvwaddstr(wnd, 0, 25, "/0 /10 /20 /30 /40 /50 /60 /70 /80 /90 /100");
}
int
compare_pctcpu(const void *a, const void *b)
{
return (((const struct p_times *) a)->pt_pctcpu >
((const struct p_times *) b)->pt_pctcpu)? -1: 1;
}
