2 * Copyright (c) 1980, 1992, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * @(#) Copyright (c) 1980, 1992, 1993 The Regents of the University of California. All rights reserved.
30 * @(#)main.c 8.1 (Berkeley) 6/6/93
31 * $FreeBSD: src/usr.bin/systat/main.c,v 1.11.2.1 2001/06/06 20:26:01 tmm Exp $
32 * $DragonFly: src/usr.bin/systat/main.c,v 1.7 2008/11/10 04:59:45 swildner Exp $
36 #include <sys/param.h>
50 static struct nlist namelist
[] = {
55 { .n_name
= "_stathz" },
65 int verbose
= 1; /* to report kvm read errs */
70 char hostname
[MAXHOSTNAMELEN
];
74 static WINDOW
*wload
; /* one line window for load average */
77 main(int argc
, char **argv
)
79 char errbuf
[_POSIX2_LINE_MAX
];
81 (void) setlocale(LC_TIME
, "");
85 if (argv
[0][0] == '-') {
88 p
= lookup(&argv
[0][1]);
89 if (p
== (struct cmdtab
*)-1)
90 errx(1, "%s: ambiguous request", &argv
[0][1]);
92 errx(1, "%s: unknown request", &argv
[0][1]);
95 naptime
= strtod(argv
[0], NULL
);
101 kd
= kvm_openfiles(NULL
, NULL
, NULL
, O_RDONLY
, errbuf
);
107 signal(SIGQUIT
, die
);
108 signal(SIGTERM
, die
);
111 * Initialize display. Load average appears in a one line
112 * window of its own. Current command's display appears in
113 * an overlapping sub-window of stdscr configured by the display
114 * routines to minimize update work by curses.
118 wnd
= (*curcmd
->c_open
)();
120 warnx("couldn't initialize display");
123 wload
= newwin(1, 0, 3, 20);
125 warnx("couldn't set up load average window");
128 if (kvm_nlist(kd
, namelist
)) {
132 if (namelist
[X_FIRST
].n_type
== 0)
133 errx(1, "couldn't read namelist");
134 gethostname(hostname
, sizeof (hostname
));
135 NREAD(X_HZ
, &hz
, sizeof(hz
));
136 NREAD(X_STATHZ
, &stathz
, sizeof(stathz
));
137 hertz
= stathz
? stathz
: hz
;
139 curcmd
->c_flags
|= CF_INIT
;
144 signal(SIGALRM
, display
);
157 if (curcmd
->c_flags
& CF_LOADAV
) {
159 "/0 /1 /2 /3 /4 /5 /6 /7 /8 /9 /10");
160 mvaddstr(3, 5, "Load Average");
162 (*curcmd
->c_label
)();
164 mvprintw(21, 25, "CPU usage on %s", hostname
);
170 display(int signo __unused
)
173 struct itimerval ctv
;
175 /* Get the load average over the last minute. */
176 (void) getloadavg(avenrun
, sizeof(avenrun
) / sizeof(avenrun
[0]));
177 (*curcmd
->c_fetch
)();
178 if (curcmd
->c_flags
& CF_LOADAV
) {
179 j
= 5.0*avenrun
[0] + 0.5;
180 dellave
= avenrun
[0];
182 wmove(wload
, 0, 0); wclrtoeol(wload
);
183 for (i
= (j
> 50) ? 50 : j
; i
> 0; i
--)
186 wprintw(wload
, " %4.1f", avenrun
[0]);
188 (*curcmd
->c_refresh
)();
189 if (curcmd
->c_flags
& CF_LOADAV
)
194 ctv
.it_interval
.tv_sec
= 0;
195 ctv
.it_interval
.tv_usec
= 0;
196 ctv
.it_value
.tv_sec
= (int)naptime
;
197 ctv
.it_value
.tv_usec
= (naptime
- (double)(int)naptime
) * 1000000.0;
198 setitimer(ITIMER_REAL
, &ctv
, NULL
);
205 (void) getloadavg(avenrun
, sizeof(avenrun
)/sizeof(avenrun
[0]));
206 mvprintw(CMDLINE
, 0, "%4.1f %4.1f %4.1f",
207 avenrun
[0], avenrun
[1], avenrun
[2]);
212 die(int signo __unused
)
224 error(const char *fmt
, ...)
232 getyx(stdscr
, oy
, ox
);
233 (void) vsnprintf(buf
, sizeof(buf
), fmt
, ap
);
236 mvaddstr(CMDLINE
, 0, buf
);
241 (void) vfprintf(stderr
, fmt
, ap
);
242 fprintf(stderr
, "\n");
248 nlisterr(struct nlist
*n_list
)
254 mvprintw(2, 10, "systat: nlist: can't find following symbols:");
256 n_list
[i
].n_name
!= NULL
&& *n_list
[i
].n_name
!= '\0'; i
++)
257 if (n_list
[i
].n_value
== 0)
258 mvprintw(2 + ++n
, 10, "%s", n_list
[i
].n_name
);