252 lines
5.8 KiB
C
252 lines
5.8 KiB
C
/* $NetBSD: pigs.c,v 1.3 1995/04/29 05:54:50 cgd Exp $ */
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/*-
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* Copyright (c) 1980, 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)pigs.c 8.2 (Berkeley) 9/23/93";
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#endif
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static char rcsid[] = "$NetBSD: pigs.c,v 1.3 1995/04/29 05:54:50 cgd Exp $";
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#endif /* not lint */
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/*
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* Pigs display from Bill Reeves at Lucasfilm
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*/
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#include <sys/param.h>
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#include <sys/dkstat.h>
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#include <sys/dir.h>
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#include <sys/time.h>
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#include <sys/proc.h>
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#include <sys/sysctl.h>
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#include <curses.h>
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#include <math.h>
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#include <nlist.h>
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#include <pwd.h>
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#include <stdlib.h>
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#include <string.h>
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#include "extern.h"
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#include "systat.h"
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int compar __P((const void *, const void *));
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static int nproc;
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static struct p_times {
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float pt_pctcpu;
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struct kinfo_proc *pt_kp;
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} *pt;
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static long stime[CPUSTATES];
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static int fscale;
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static double lccpu;
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WINDOW *
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openpigs()
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{
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return (subwin(stdscr, LINES-5-1, 0, 5, 0));
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}
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void
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closepigs(w)
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WINDOW *w;
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{
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if (w == NULL)
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return;
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wclear(w);
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wrefresh(w);
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delwin(w);
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}
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void
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showpigs()
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{
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register int i, j, y, k;
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struct eproc *ep;
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float total;
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int factor;
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char *uname, *pname, pidname[30];
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if (pt == NULL)
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return;
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/* Accumulate the percent of cpu per user. */
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total = 0.0;
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for (i = 0; i <= nproc; i++) {
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/* Accumulate the percentage. */
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total += pt[i].pt_pctcpu;
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}
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if (total < 1.0)
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total = 1.0;
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factor = 50.0/total;
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qsort(pt, nproc + 1, sizeof (struct p_times), compar);
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y = 1;
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i = nproc + 1;
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if (i > wnd->maxy-1)
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i = wnd->maxy-1;
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for (k = 0; i > 0 && pt[k].pt_pctcpu > 0.01; i--, y++, k++) {
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if (pt[k].pt_kp == NULL) {
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uname = "";
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pname = "<idle>";
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}
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else {
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ep = &pt[k].pt_kp->kp_eproc;
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uname = user_from_uid(ep->e_ucred.cr_uid, 0);
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pname = pt[k].pt_kp->kp_proc.p_comm;
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}
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wmove(wnd, y, 0);
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wclrtoeol(wnd);
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mvwaddstr(wnd, y, 0, uname);
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sprintf(pidname, "%10.10s", pname, 0);
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mvwaddstr(wnd, y, 9, pidname);
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wmove(wnd, y, 20);
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for (j = pt[k].pt_pctcpu*factor + 0.5; j > 0; j--)
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waddch(wnd, 'X');
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}
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wmove(wnd, y, 0); wclrtobot(wnd);
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}
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static struct nlist namelist[] = {
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#define X_FIRST 0
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#define X_CPTIME 0
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{ "_cp_time" },
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#define X_CCPU 1
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{ "_ccpu" },
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#define X_FSCALE 2
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{ "_fscale" },
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{ "" }
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};
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int
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initpigs()
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{
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fixpt_t ccpu;
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if (namelist[X_FIRST].n_type == 0) {
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if (kvm_nlist(kd, namelist)) {
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nlisterr(namelist);
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return(0);
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}
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if (namelist[X_FIRST].n_type == 0) {
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error("namelist failed");
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return(0);
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}
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}
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KREAD(NPTR(X_CPTIME), stime, sizeof (stime));
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NREAD(X_CCPU, &ccpu, LONG);
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NREAD(X_FSCALE, &fscale, LONG);
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lccpu = log((double) ccpu / fscale);
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return(1);
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}
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void
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fetchpigs()
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{
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register int i;
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register float time;
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register struct proc *pp;
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register float *pctp;
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struct kinfo_proc *kpp;
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long ctime[CPUSTATES];
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double t;
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static int lastnproc = 0;
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if (namelist[X_FIRST].n_type == 0)
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return;
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if ((kpp = kvm_getprocs(kd, KERN_PROC_ALL, 0, &nproc)) == NULL) {
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error("%s", kvm_geterr(kd));
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if (pt)
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free(pt);
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return;
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}
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if (nproc > lastnproc) {
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free(pt);
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if ((pt =
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malloc((nproc + 1) * sizeof(struct p_times))) == NULL) {
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error("Out of memory");
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die(0);
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}
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}
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lastnproc = nproc;
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/*
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* calculate %cpu for each proc
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*/
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for (i = 0; i < nproc; i++) {
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pt[i].pt_kp = &kpp[i];
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pp = &kpp[i].kp_proc;
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pctp = &pt[i].pt_pctcpu;
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time = pp->p_swtime;
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if (time == 0 || (pp->p_flag & P_INMEM) == 0)
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*pctp = 0;
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else
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*pctp = ((double) pp->p_pctcpu /
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fscale) / (1.0 - exp(time * lccpu));
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}
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/*
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* and for the imaginary "idle" process
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*/
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KREAD(NPTR(X_CPTIME), ctime, sizeof (ctime));
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t = 0;
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for (i = 0; i < CPUSTATES; i++)
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t += ctime[i] - stime[i];
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if (t == 0.0)
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t = 1.0;
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pt[nproc].pt_kp = NULL;
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pt[nproc].pt_pctcpu = (ctime[CP_IDLE] - stime[CP_IDLE]) / t;
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for (i = 0; i < CPUSTATES; i++)
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stime[i] = ctime[i];
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}
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void
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labelpigs()
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{
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wmove(wnd, 0, 0);
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wclrtoeol(wnd);
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mvwaddstr(wnd, 0, 20,
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"/0 /10 /20 /30 /40 /50 /60 /70 /80 /90 /100");
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}
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int
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compar(a, b)
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const void *a, *b;
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{
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return (((struct p_times *) a)->pt_pctcpu >
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((struct p_times *) b)->pt_pctcpu)? -1: 1;
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}
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