/usr.bin/systat/pigs.c
https://bitbucket.org/freebsd/freebsd-head/ · C · 193 lines · 136 code · 23 blank · 34 comment · 25 complexity · 94c567b408d24a75d0e5697aec2c7d41 MD5 · raw file
- /*-
- * 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.
- * 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.
- */
- #if 0
- #ifndef lint
- static char sccsid[] = "@(#)pigs.c 8.2 (Berkeley) 9/23/93";
- #endif /* not lint */
- #endif
- #include <sys/cdefs.h>
- __FBSDID("$FreeBSD$");
- /*
- * Pigs display from Bill Reeves at Lucasfilm
- */
- #include <sys/param.h>
- #include <sys/proc.h>
- #include <sys/sysctl.h>
- #include <sys/time.h>
- #include <sys/user.h>
- #include <curses.h>
- #include <math.h>
- #include <pwd.h>
- #include <stdlib.h>
- #include "systat.h"
- #include "extern.h"
- int compar(const void *, const void *);
- static int nproc;
- static struct p_times {
- float pt_pctcpu;
- struct kinfo_proc *pt_kp;
- } *pt;
- static int fscale;
- static double lccpu;
- WINDOW *
- openpigs(void)
- {
- return (subwin(stdscr, LINES-3-1, 0, MAINWIN_ROW, 0));
- }
- void
- closepigs(WINDOW *w)
- {
- if (w == NULL)
- return;
- wclear(w);
- wrefresh(w);
- delwin(w);
- }
- void
- showpigs(void)
- {
- int i, j, y, k;
- const char *uname, *pname;
- char pidname[30];
- if (pt == NULL)
- return;
- qsort(pt, nproc, sizeof (struct p_times), compar);
- y = 1;
- i = nproc;
- if (i > wnd->_maxy-1)
- i = wnd->_maxy-1;
- for (k = 0; i > 0 && pt[k].pt_pctcpu > 0.01; i--, y++, k++) {
- uname = user_from_uid(pt[k].pt_kp->ki_uid, 0);
- pname = pt[k].pt_kp->ki_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 * 50 + 0.5; j > 0; j--)
- waddch(wnd, 'X');
- }
- wmove(wnd, y, 0); wclrtobot(wnd);
- }
- int
- initpigs(void)
- {
- fixpt_t ccpu;
- size_t len;
- int err;
- len = sizeof(ccpu);
- err = sysctlbyname("kern.ccpu", &ccpu, &len, NULL, 0);
- if (err || len != sizeof(ccpu)) {
- perror("kern.ccpu");
- return (0);
- }
- len = sizeof(fscale);
- err = sysctlbyname("kern.fscale", &fscale, &len, NULL, 0);
- if (err || len != sizeof(fscale)) {
- perror("kern.fscale");
- return (0);
- }
- lccpu = log((double) ccpu / fscale);
- return(1);
- }
- void
- fetchpigs(void)
- {
- int i;
- float ftime;
- float *pctp;
- struct kinfo_proc *kpp;
- static int lastnproc = 0;
- if ((kpp = kvm_getprocs(kd, KERN_PROC_ALL, 0, &nproc)) == NULL) {
- error("%s", kvm_geterr(kd));
- if (pt)
- free(pt);
- return;
- }
- if (nproc > lastnproc) {
- free(pt);
- if ((pt =
- malloc(nproc * sizeof(struct p_times))) == NULL) {
- error("Out of memory");
- die(0);
- }
- }
- lastnproc = nproc;
- /*
- * calculate %cpu for each proc
- */
- for (i = 0; i < nproc; i++) {
- pt[i].pt_kp = &kpp[i];
- pctp = &pt[i].pt_pctcpu;
- ftime = kpp[i].ki_swtime;
- if (ftime == 0 || (kpp[i].ki_flag & P_INMEM) == 0)
- *pctp = 0;
- else
- *pctp = ((double) kpp[i].ki_pctcpu /
- fscale) / (1.0 - exp(ftime * lccpu));
- }
- }
- 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 (((const struct p_times *) a)->pt_pctcpu >
- ((const struct p_times *) b)->pt_pctcpu)? -1: 1;
- }