Annotation of src/usr.bin/systat/main.c, Revision 1.18
1.18 ! deraadt 1: /* $OpenBSD: main.c,v 1.17 2001/11/19 19:02:16 mpech Exp $ */
1.3 deraadt 2: /* $NetBSD: main.c,v 1.8 1996/05/10 23:16:36 thorpej Exp $ */
1.1 deraadt 3:
4: /*-
5: * Copyright (c) 1980, 1992, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: static char copyright[] =
39: "@(#) Copyright (c) 1980, 1992, 1993\n\
40: The Regents of the University of California. All rights reserved.\n";
41: #endif /* not lint */
42:
43: #ifndef lint
44: #if 0
45: static char sccsid[] = "@(#)main.c 8.1 (Berkeley) 6/6/93";
46: #endif
1.18 ! deraadt 47: static char rcsid[] = "$OpenBSD: main.c,v 1.17 2001/11/19 19:02:16 mpech Exp $";
1.1 deraadt 48: #endif /* not lint */
49:
50: #include <sys/param.h>
1.18 ! deraadt 51: #include <sys/sysctl.h>
1.1 deraadt 52:
53: #include <err.h>
54: #include <nlist.h>
55: #include <signal.h>
1.11 millert 56: #include <ctype.h>
1.1 deraadt 57: #include <stdio.h>
58: #include <string.h>
1.3 deraadt 59: #include <unistd.h>
1.11 millert 60: #include <stdlib.h>
1.6 deraadt 61: #include <limits.h>
1.1 deraadt 62:
63: #include "systat.h"
64: #include "extern.h"
65:
1.18 ! deraadt 66: double dellave;
1.1 deraadt 67:
1.18 ! deraadt 68: kvm_t *kd;
! 69: char *nlistf = NULL;
1.3 deraadt 70: char *memf = NULL;
1.1 deraadt 71: sig_t sigtstpdfl;
1.18 ! deraadt 72: double avenrun[3];
! 73: int col;
1.1 deraadt 74: int naptime = 5;
1.18 ! deraadt 75: int verbose = 1; /* to report kvm read errs */
! 76: int hz, stathz;
1.1 deraadt 77: char c;
78: char *namp;
79: char hostname[MAXHOSTNAMELEN];
80: WINDOW *wnd;
1.11 millert 81: long CMDLINE;
1.1 deraadt 82:
1.18 ! deraadt 83: WINDOW *wload; /* one line window for load average */
1.1 deraadt 84:
1.11 millert 85: static void usage __P((void));
1.3 deraadt 86:
1.2 deraadt 87: int
1.1 deraadt 88: main(argc, argv)
89: int argc;
90: char **argv;
91: {
1.15 ericj 92: int ch, ret;
1.6 deraadt 93: char errbuf[_POSIX2_LINE_MAX];
1.1 deraadt 94:
1.18 ! deraadt 95: while ((ch = getopt(argc, argv, "w:")) != -1)
1.3 deraadt 96: switch(ch) {
1.18 ! deraadt 97: case 'w':
! 98: if ((naptime = atoi(optarg)) <= 0)
! 99: errx(1, "interval <= 0.");
! 100: break;
! 101: default:
! 102: usage();
! 103: }
! 104: argc -= optind;
! 105: argv += optind;
1.3 deraadt 106:
1.1 deraadt 107: while (argc > 0) {
1.3 deraadt 108: if (isdigit(argv[0][0])) {
109: naptime = atoi(argv[0]);
110: if (naptime <= 0)
111: naptime = 5;
112: } else {
1.1 deraadt 113: struct cmdtab *p;
114:
1.3 deraadt 115: p = lookup(&argv[0][0]);
1.1 deraadt 116: if (p == (struct cmdtab *)-1)
1.3 deraadt 117: errx(1, "ambiguous request: %s", &argv[0][0]);
1.1 deraadt 118: if (p == 0)
1.3 deraadt 119: errx(1, "unknown request: %s", &argv[0][0]);
1.1 deraadt 120: curcmd = p;
121: }
1.18 ! deraadt 122: argc--;
! 123: argv++;
1.1 deraadt 124: }
1.18 ! deraadt 125: kd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, errbuf);
1.1 deraadt 126: if (kd == NULL) {
127: error("%s", errbuf);
128: exit(1);
129: }
1.15 ericj 130:
1.18 ! deraadt 131: signal(SIGINT, sigdie);
! 132: siginterrupt(SIGINT, 1);
! 133: signal(SIGQUIT, sigdie);
! 134: siginterrupt(SIGQUIT, 1);
! 135: signal(SIGTERM, sigdie);
! 136: siginterrupt(SIGTERM, 1);
1.1 deraadt 137:
138: /*
139: * Initialize display. Load average appears in a one line
140: * window of its own. Current command's display appears in
141: * an overlapping sub-window of stdscr configured by the display
142: * routines to minimize update work by curses.
143: */
144: if (initscr() == NULL)
145: {
146: warnx("couldn't initialize screen");
147: exit(0);
148: }
149:
150: CMDLINE = LINES - 1;
151: wnd = (*curcmd->c_open)();
152: if (wnd == NULL) {
153: warnx("couldn't initialize display");
1.18 ! deraadt 154: die();
1.1 deraadt 155: }
156: wload = newwin(1, 0, 3, 20);
157: if (wload == NULL) {
158: warnx("couldn't set up load average window");
1.18 ! deraadt 159: die();
1.1 deraadt 160: }
161: gethostname(hostname, sizeof (hostname));
1.18 ! deraadt 162: gethz();
1.1 deraadt 163: (*curcmd->c_init)();
164: curcmd->c_flags |= CF_INIT;
165: labels();
166:
167: dellave = 0.0;
168:
1.18 ! deraadt 169: signal(SIGALRM, sigdisplay);
! 170: siginterrupt(SIGALRM, 1);
! 171: signal(SIGWINCH, sigwinch);
! 172: siginterrupt(SIGWINCH, 1);
! 173: gotdisplay = 1;
1.1 deraadt 174: noecho();
175: crmode();
176: keyboard();
177: /*NOTREACHED*/
178: }
1.3 deraadt 179:
1.18 ! deraadt 180: void
! 181: gethz()
! 182: {
! 183: struct clockinfo cinf;
! 184: size_t size = sizeof(cinf);
! 185: int mib[2];
! 186:
! 187: mib[0] = CTL_KERN;
! 188: mib[1] = KERN_CLOCKRATE;
! 189: if (sysctl(mib, 2, &cinf, &size, NULL, 0) == -1)
! 190: return;
! 191: stathz = cinf.stathz;
! 192: hz = cinf.hz;
! 193: }
! 194:
1.3 deraadt 195: static void
196: usage()
197: {
198: fprintf(stderr, "usage: systat [-M core] [-N system] [-w wait]\n");
1.7 niklas 199: fprintf(stderr,
200: " [iostat|mbufs|netstat|pigs|swap|vmstat]\n");
1.3 deraadt 201: exit(1);
202: }
203:
1.1 deraadt 204:
205: void
206: labels()
207: {
208: if (curcmd->c_flags & CF_LOADAV) {
209: mvaddstr(2, 20,
210: "/0 /1 /2 /3 /4 /5 /6 /7 /8 /9 /10");
211: mvaddstr(3, 5, "Load Average");
212: }
213: (*curcmd->c_label)();
214: #ifdef notdef
215: mvprintw(21, 25, "CPU usage on %s", hostname);
216: #endif
217: refresh();
218: }
219:
220: void
1.18 ! deraadt 221: sigdisplay(signo)
1.1 deraadt 222: int signo;
223: {
1.18 ! deraadt 224: gotdisplay = 1;
! 225: }
! 226:
! 227: void
! 228: display(void)
! 229: {
1.17 mpech 230: int i, j;
1.1 deraadt 231:
232: /* Get the load average over the last minute. */
233: (void) getloadavg(avenrun, sizeof(avenrun) / sizeof(avenrun[0]));
234: (*curcmd->c_fetch)();
235: if (curcmd->c_flags & CF_LOADAV) {
236: j = 5.0*avenrun[0] + 0.5;
237: dellave -= avenrun[0];
238: if (dellave >= 0.0)
239: c = '<';
240: else {
241: c = '>';
242: dellave = -dellave;
243: }
1.10 kstailey 244: if (dellave < 0.05)
1.1 deraadt 245: c = '|';
246: dellave = avenrun[0];
1.18 ! deraadt 247: wmove(wload, 0, 0);
! 248: wclrtoeol(wload);
1.1 deraadt 249: for (i = (j > 50) ? 50 : j; i > 0; i--)
250: waddch(wload, c);
251: if (j > 50)
252: wprintw(wload, " %4.1f", avenrun[0]);
253: }
254: (*curcmd->c_refresh)();
255: if (curcmd->c_flags & CF_LOADAV)
256: wrefresh(wload);
257: wrefresh(wnd);
258: move(CMDLINE, col);
259: refresh();
260: alarm(naptime);
261: }
262:
263: void
264: load()
265: {
266:
267: (void) getloadavg(avenrun, sizeof(avenrun)/sizeof(avenrun[0]));
268: mvprintw(CMDLINE, 0, "%4.1f %4.1f %4.1f",
269: avenrun[0], avenrun[1], avenrun[2]);
270: clrtoeol();
271: }
272:
1.18 ! deraadt 273: volatile sig_atomic_t gotdie;
! 274: volatile sig_atomic_t gotdisplay;
! 275: volatile sig_atomic_t gotwinch;
! 276:
1.1 deraadt 277: void
1.18 ! deraadt 278: sigdie(signo)
1.1 deraadt 279: int signo;
280: {
1.18 ! deraadt 281: gotdie = 1;
! 282: }
! 283:
! 284: void
! 285: die()
! 286: {
1.13 deraadt 287: if (wnd) {
288: move(CMDLINE, 0);
289: clrtoeol();
290: refresh();
291: endwin();
292: }
1.1 deraadt 293: exit(0);
294: }
1.14 kstailey 295:
296: void
1.18 ! deraadt 297: sigwinch(signo)
1.14 kstailey 298: int signo;
299: {
1.18 ! deraadt 300: gotwinch = 1;
1.14 kstailey 301: }
302:
1.1 deraadt 303:
1.12 mickey 304: #ifdef __STDC__
1.1 deraadt 305: #include <stdarg.h>
306: #else
307: #include <varargs.h>
308: #endif
309:
1.12 mickey 310: #ifdef __STDC__
1.1 deraadt 311: void
312: error(const char *fmt, ...)
313: #else
314: void
315: error(fmt, va_alist)
316: char *fmt;
317: va_dcl
318: #endif
319: {
320: va_list ap;
321: char buf[255];
322: int oy, ox;
1.12 mickey 323: #ifdef __STDC__
1.1 deraadt 324: va_start(ap, fmt);
325: #else
326: va_start(ap);
327: #endif
328:
329: if (wnd) {
330: getyx(stdscr, oy, ox);
1.5 deraadt 331: (void) vsnprintf(buf, sizeof buf, fmt, ap);
1.1 deraadt 332: clrtoeol();
333: standout();
334: mvaddstr(CMDLINE, 0, buf);
335: standend();
336: move(oy, ox);
337: refresh();
338: } else {
339: (void) vfprintf(stderr, fmt, ap);
340: fprintf(stderr, "\n");
341: }
342: va_end(ap);
343: }
344:
345: void
346: nlisterr(namelist)
347: struct nlist namelist[];
348: {
349: int i, n;
350:
351: n = 0;
352: clear();
353: mvprintw(2, 10, "systat: nlist: can't find following symbols:");
354: for (i = 0;
355: namelist[i].n_name != NULL && *namelist[i].n_name != '\0'; i++)
356: if (namelist[i].n_value == 0)
357: mvprintw(2 + ++n, 10, "%s", namelist[i].n_name);
358: move(CMDLINE, 0);
359: clrtoeol();
360: refresh();
361: endwin();
362: exit(1);
363: }
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