237 lines
5.5 KiB
C
237 lines
5.5 KiB
C
/* $NetBSD: pigs.c,v 1.33 2012/11/23 03:46:35 christos 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. 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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#include <sys/cdefs.h>
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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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__RCSID("$NetBSD: pigs.c,v 1.33 2012/11/23 03:46:35 christos 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/sched.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 <pwd.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include "systat.h"
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#include "extern.h"
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#include "ps.h"
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int compare_pctcpu(const void *, const void *);
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int nproc;
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struct p_times *pt;
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uint64_t stime[CPUSTATES];
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uint64_t mempages;
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int fscale;
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double lccpu;
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#ifndef P_ZOMBIE
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#define P_ZOMBIE(p) ((p)->p_stat == SZOMB)
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#endif
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WINDOW *
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openpigs(void)
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{
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return (subwin(stdscr, -1, 0, 5, 0));
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}
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void
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closepigs(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(void)
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{
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int i, y, k;
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struct kinfo_proc2 *kp;
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float total;
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int factor;
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const char *pname;
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char pidname[30], pidstr[7], usrstr[9];
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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), compare_pctcpu);
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y = 1;
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i = nproc + 1;
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if (i > getmaxy(wnd)-1)
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i = getmaxy(wnd)-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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pname = "<idle>";
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pidstr[0] = '\0';
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usrstr[0] = '\0';
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}
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else {
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kp = pt[k].pt_kp;
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pname = kp->p_comm;
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snprintf(pidstr, sizeof(pidstr), "%5d", kp->p_pid);
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snprintf(usrstr, sizeof(usrstr), "%8s",
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user_from_uid(kp->p_uid, 0));
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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, usrstr);
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mvwaddstr(wnd, y, 9, pidstr);
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(void)snprintf(pidname, sizeof(pidname), "%9.9s", pname);
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mvwaddstr(wnd, y, 15, pidname);
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mvwhline(wnd, y, 25, 'X', pt[k].pt_pctcpu*factor + 0.5);
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}
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wmove(wnd, y, 0); wclrtobot(wnd);
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}
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int
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initpigs(void)
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{
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fixpt_t ccpu;
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size_t len;
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(void) fetch_cptime(stime);
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len = sizeof(mempages);
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if (sysctlbyname("hw.physmem64", &mempages, &len, NULL, 0))
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error("can't get \"hw.physmem64\": %s", strerror(errno));
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len = sizeof(ccpu);
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if (sysctlbyname("kern.ccpu", &ccpu, &len, NULL, 0))
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error("can't get \"kern.ccpu\": %s", strerror(errno));
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len = sizeof(fscale);
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if (sysctlbyname("kern.fscale", &fscale, &len, NULL, 0))
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error("can't get \"kern.fscale\": %s", strerror(errno));
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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(void)
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{
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int i;
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float *pctp;
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struct kinfo_proc2 *kpp, *k;
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u_int64_t cputime[CPUSTATES];
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double t;
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static int lastnproc = 0;
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if ((kpp = kvm_getproc2(kd, KERN_PROC_ALL, 0, sizeof(*kpp),
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&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 = k = &kpp[i];
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pctp = &pt[i].pt_pctcpu;
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if (k->p_swtime == 0 || k->p_stat == SZOMB)
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*pctp = 0;
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else
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*pctp = ((double) k->p_pctcpu /
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fscale) / (1.0 - exp(k->p_swtime * 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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(void) fetch_cptime(cputime);
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t = 0;
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for (i = 0; i < CPUSTATES; i++)
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t += cputime[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 = (cputime[CP_IDLE] - stime[CP_IDLE]) / t;
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for (i = 0; i < CPUSTATES; i++)
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stime[i] = cputime[i];
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}
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void
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labelpigs(void)
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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, 25, "/0 /10 /20 /30 /40 /50 /60 /70 /80 /90 /100");
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}
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int
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compare_pctcpu(const void *a, const void *b)
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{
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return (((const struct p_times *) a)->pt_pctcpu >
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((const struct p_times *) b)->pt_pctcpu)? -1: 1;
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}
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