1char *copyright =
2 "Copyright (c) 1984 through 1996, William LeFebvre";
3
4/*
5 * Top users/processes display for Unix
6 * Version 3
7 *
8 * This program may be freely redistributed,
9 * but this entire comment MUST remain intact.
10 *
11 * Copyright (c) 1984, 1989, William LeFebvre, Rice University
12 * Copyright (c) 1989 - 1994, William LeFebvre, Northwestern University
13 * Copyright (c) 1994, 1995, William LeFebvre, Argonne National Laboratory
14 * Copyright (c) 1996, William LeFebvre, Group sys Consulting
15 *
|
16 * $FreeBSD: head/contrib/top/top.c 224205 2011-07-18 21:15:47Z jhb $
|
| 16 * $FreeBSD: head/contrib/top/top.c 232239 2012-02-27 20:52:20Z kib $ |
17 */
18
19/*
20 * See the file "Changes" for information on version-to-version changes.
21 */
22
23/*
24 * This file contains "main" and other high-level routines.
25 */
26
27/*
28 * The following preprocessor variables, when defined, are used to
29 * distinguish between different Unix implementations:
30 *
31 * SIGHOLD - use SVR4 sighold function when defined
32 * SIGRELSE - use SVR4 sigrelse function when defined
33 * FD_SET - macros FD_SET and FD_ZERO are used when defined
34 */
35
36#include "os.h"
37#include <errno.h>
38#include <signal.h>
39#include <setjmp.h>
40#include <ctype.h>
41#include <sys/time.h>
42
43/* includes specific to top */
44#include "display.h" /* interface to display package */
45#include "screen.h" /* interface to screen package */
46#include "top.h"
47#include "top.local.h"
48#include "boolean.h"
49#include "machine.h"
50#include "utils.h"
51
52/* Size of the stdio buffer given to stdout */
53#define Buffersize 2048
54
55/* The buffer that stdio will use */
56char stdoutbuf[Buffersize];
57
58/* build Signal masks */
59#define Smask(s) (1 << ((s) - 1))
60
61/* for getopt: */
62extern int optind;
63extern char *optarg;
64
65/* imported from screen.c */
66extern int overstrike;
67
68static int fmt_flags = 0;
69int pcpu_stats = No;
70
71/* signal handling routines */
72sigret_t leave();
|
73sigret_t onalrm();
|
73sigret_t tstop();
74#ifdef SIGWINCH
75sigret_t winch();
76#endif
77
78volatile sig_atomic_t leaveflag;
79volatile sig_atomic_t tstopflag;
80volatile sig_atomic_t winchflag;
81
82/* internal routines */
83void quit();
84
85/* values which need to be accessed by signal handlers */
86static int max_topn; /* maximum displayable processes */
87
88/* miscellaneous things */
89struct process_select ps;
90char *myname = "top";
91jmp_buf jmp_int;
92
93/* routines that don't return int */
94
95char *username();
96char *ctime();
97char *kill_procs();
98char *renice_procs();
99
100#ifdef ORDER
101extern int (*compares[])();
102#else
103extern int proc_compare();
104extern int io_compare();
105#endif
106time_t time();
107
108caddr_t get_process_info();
109
110/* different routines for displaying the user's identification */
111/* (values assigned to get_userid) */
112char *username();
113char *itoa7();
114
115/* display routines that need to be predeclared */
116int i_loadave();
117int u_loadave();
118int i_procstates();
119int u_procstates();
120int i_cpustates();
121int u_cpustates();
122int i_memory();
123int u_memory();
124int i_swap();
125int u_swap();
126int i_message();
127int u_message();
128int i_header();
129int u_header();
130int i_process();
131int u_process();
132
133/* pointers to display routines */
134int (*d_loadave)() = i_loadave;
135int (*d_procstates)() = i_procstates;
136int (*d_cpustates)() = i_cpustates;
137int (*d_memory)() = i_memory;
138int (*d_swap)() = i_swap;
139int (*d_message)() = i_message;
140int (*d_header)() = i_header;
141int (*d_process)() = i_process;
142
143
144main(argc, argv)
145
146int argc;
147char *argv[];
148
149{
150 register int i;
151 register int active_procs;
152 register int change;
153
154 struct system_info system_info;
155 struct statics statics;
156 caddr_t processes;
157
158 static char tempbuf1[50];
159 static char tempbuf2[50];
160 int old_sigmask; /* only used for BSD-style signals */
161 int topn = Default_TOPN;
162 int delay = Default_DELAY;
163 int displays = 0; /* indicates unspecified */
164 int sel_ret = 0;
165 time_t curr_time;
166 char *(*get_userid)() = username;
167 char *uname_field = "USERNAME";
168 char *header_text;
169 char *env_top;
170 char **preset_argv;
171 int preset_argc = 0;
172 char **av;
173 int ac;
174 char dostates = No;
175 char do_unames = Yes;
176 char interactive = Maybe;
177 char warnings = 0;
178#if Default_TOPN == Infinity
179 char topn_specified = No;
180#endif
181 char ch;
182 char *iptr;
183 char no_command = 1;
184 struct timeval timeout;
185#ifdef ORDER
186 char *order_name = NULL;
187 int order_index = 0;
188#endif
189#ifndef FD_SET
190 /* FD_SET and friends are not present: fake it */
191 typedef int fd_set;
192#define FD_ZERO(x) (*(x) = 0)
193#define FD_SET(f, x) (*(x) = 1<<f)
194#endif
195 fd_set readfds;
196
197#ifdef ORDER
198 static char command_chars[] = "\f qh?en#sdkriIutHmSCajzPo";
199#else
200 static char command_chars[] = "\f qh?en#sdkriIutHmSCajzP";
201#endif
202/* these defines enumerate the "strchr"s of the commands in command_chars */
203#define CMD_redraw 0
204#define CMD_update 1
205#define CMD_quit 2
206#define CMD_help1 3
207#define CMD_help2 4
208#define CMD_OSLIMIT 4 /* terminals with OS can only handle commands */
209#define CMD_errors 5 /* less than or equal to CMD_OSLIMIT */
210#define CMD_number1 6
211#define CMD_number2 7
212#define CMD_delay 8
213#define CMD_displays 9
214#define CMD_kill 10
215#define CMD_renice 11
216#define CMD_idletog 12
217#define CMD_idletog2 13
218#define CMD_user 14
219#define CMD_selftog 15
220#define CMD_thrtog 16
221#define CMD_viewtog 17
222#define CMD_viewsys 18
223#define CMD_wcputog 19
224#define CMD_showargs 20
225#define CMD_jidtog 21
226#define CMD_kidletog 22
227#define CMD_pcputog 23
228#ifdef ORDER
229#define CMD_order 24
230#endif
231
232 /* set the buffer for stdout */
233#ifdef DEBUG
234 extern FILE *debug;
235 debug = fopen("debug.run", "w");
236 setbuffer(stdout, NULL, 0);
237#else
238 setbuffer(stdout, stdoutbuf, Buffersize);
239#endif
240
241 /* get our name */
242 if (argc > 0)
243 {
244 if ((myname = strrchr(argv[0], '/')) == 0)
245 {
246 myname = argv[0];
247 }
248 else
249 {
250 myname++;
251 }
252 }
253
254 /* initialize some selection options */
255 ps.idle = Yes;
256 ps.self = -1;
257 ps.system = No;
258 ps.uid = -1;
259 ps.thread = No;
260 ps.wcpu = 1;
261 ps.jail = No;
262 ps.kidle = Yes;
263 ps.command = NULL;
264
265 /* get preset options from the environment */
266 if ((env_top = getenv("TOP")) != NULL)
267 {
268 av = preset_argv = argparse(env_top, &preset_argc);
269 ac = preset_argc;
270
271 /* set the dummy argument to an explanatory message, in case
272 getopt encounters a bad argument */
273 preset_argv[0] = "while processing environment";
274 }
275
276 /* process options */
277 do {
278 /* if we're done doing the presets, then process the real arguments */
279 if (preset_argc == 0)
280 {
281 ac = argc;
282 av = argv;
283
284 /* this should keep getopt happy... */
285 optind = 1;
286 }
287
288 while ((i = getopt(ac, av, "CSIHPabijnquvzs:d:U:m:o:t")) != EOF)
289 {
290 switch(i)
291 {
292 case 'v': /* show version number */
293 fprintf(stderr, "%s: version %s\n",
294 myname, version_string());
295 exit(1);
296 break;
297
298 case 'u': /* toggle uid/username display */
299 do_unames = !do_unames;
300 break;
301
302 case 'U': /* display only username's processes */
303 if ((ps.uid = userid(optarg)) == -1)
304 {
305 fprintf(stderr, "%s: unknown user\n", optarg);
306 exit(1);
307 }
308 break;
309
310 case 'S': /* show system processes */
311 ps.system = !ps.system;
312 break;
313
314 case 'I': /* show idle processes */
315 ps.idle = !ps.idle;
316 break;
317
318 case 'i': /* go interactive regardless */
319 interactive = Yes;
320 break;
321
322 case 'n': /* batch, or non-interactive */
323 case 'b':
324 interactive = No;
325 break;
326
327 case 'a':
328 fmt_flags ^= FMT_SHOWARGS;
329 break;
330
331 case 'd': /* number of displays to show */
332 if ((i = atoiwi(optarg)) == Invalid || i == 0)
333 {
334 fprintf(stderr,
335 "%s: warning: display count should be positive -- option ignored\n",
336 myname);
337 warnings++;
338 }
339 else
340 {
341 displays = i;
342 }
343 break;
344
345 case 's':
346 if ((delay = atoi(optarg)) < 0 || (delay == 0 && getuid() != 0))
347 {
348 fprintf(stderr,
349 "%s: warning: seconds delay should be positive -- using default\n",
350 myname);
351 delay = Default_DELAY;
352 warnings++;
353 }
354 break;
355
356 case 'q': /* be quick about it */
357 /* only allow this if user is really root */
358 if (getuid() == 0)
359 {
360 /* be very un-nice! */
361 (void) nice(-20);
362 }
363 else
364 {
365 fprintf(stderr,
366 "%s: warning: `-q' option can only be used by root\n",
367 myname);
368 warnings++;
369 }
370 break;
371
372 case 'm': /* select display mode */
373 if (strcmp(optarg, "io") == 0) {
374 displaymode = DISP_IO;
375 } else if (strcmp(optarg, "cpu") == 0) {
376 displaymode = DISP_CPU;
377 } else {
378 fprintf(stderr,
379 "%s: warning: `-m' option can only take args "
380 "'io' or 'cpu'\n",
381 myname);
382 exit(1);
383 }
384 break;
385
386 case 'o': /* select sort order */
387#ifdef ORDER
388 order_name = optarg;
389#else
390 fprintf(stderr,
391 "%s: this platform does not support arbitrary ordering. Sorry.\n",
392 myname);
393 warnings++;
394#endif
395 break;
396
397 case 't':
398 ps.self = (ps.self == -1) ? getpid() : -1;
399 break;
400
401 case 'C':
402 ps.wcpu = !ps.wcpu;
403 break;
404
405 case 'H':
406 ps.thread = !ps.thread;
407 break;
408
409 case 'j':
410 ps.jail = !ps.jail;
411 break;
412
413 case 'P':
414 pcpu_stats = !pcpu_stats;
415 break;
416
417 case 'z':
418 ps.kidle = !ps.kidle;
419 break;
420
421 default:
422 fprintf(stderr,
423"Top version %s\n"
424"Usage: %s [-abCHIijnPqStuvz] [-d count] [-m io | cpu] [-o field] [-s time]\n"
425" [-U username] [number]\n",
426 version_string(), myname);
427 exit(1);
428 }
429 }
430
431 /* get count of top processes to display (if any) */
432 if (optind < ac)
433 {
434 if ((topn = atoiwi(av[optind])) == Invalid)
435 {
436 fprintf(stderr,
437 "%s: warning: process display count should be non-negative -- using default\n",
438 myname);
439 warnings++;
440 }
441#if Default_TOPN == Infinity
442 else
443 {
444 topn_specified = Yes;
445 }
446#endif
447 }
448
449 /* tricky: remember old value of preset_argc & set preset_argc = 0 */
450 i = preset_argc;
451 preset_argc = 0;
452
453 /* repeat only if we really did the preset arguments */
454 } while (i != 0);
455
456 /* set constants for username/uid display correctly */
457 if (!do_unames)
458 {
459 uname_field = " UID ";
460 get_userid = itoa7;
461 }
462
463 /* initialize the kernel memory interface */
464 if (machine_init(&statics, do_unames) == -1)
465 {
466 exit(1);
467 }
468
469#ifdef ORDER
470 /* determine sorting order index, if necessary */
471 if (order_name != NULL)
472 {
473 if ((order_index = string_index(order_name, statics.order_names)) == -1)
474 {
475 char **pp;
476
477 fprintf(stderr, "%s: '%s' is not a recognized sorting order.\n",
478 myname, order_name);
479 fprintf(stderr, "\tTry one of these:");
480 pp = statics.order_names;
481 while (*pp != NULL)
482 {
483 fprintf(stderr, " %s", *pp++);
484 }
485 fputc('\n', stderr);
486 exit(1);
487 }
488 }
489#endif
490
491#ifdef no_initialization_needed
492 /* initialize the hashing stuff */
493 if (do_unames)
494 {
495 init_hash();
496 }
497#endif
498
499 /* initialize termcap */
500 init_termcap(interactive);
501
502 /* get the string to use for the process area header */
503 header_text = format_header(uname_field);
504
505 /* initialize display interface */
506 if ((max_topn = display_init(&statics)) == -1)
507 {
508 fprintf(stderr, "%s: can't allocate sufficient memory\n", myname);
509 exit(4);
510 }
511
512 /* print warning if user requested more processes than we can display */
513 if (topn > max_topn)
514 {
515 fprintf(stderr,
516 "%s: warning: this terminal can only display %d processes.\n",
517 myname, max_topn);
518 warnings++;
519 }
520
521 /* adjust for topn == Infinity */
522 if (topn == Infinity)
523 {
524 /*
525 * For smart terminals, infinity really means everything that can
526 * be displayed, or Largest.
527 * On dumb terminals, infinity means every process in the system!
528 * We only really want to do that if it was explicitly specified.
529 * This is always the case when "Default_TOPN != Infinity". But if
530 * topn wasn't explicitly specified and we are on a dumb terminal
531 * and the default is Infinity, then (and only then) we use
532 * "Nominal_TOPN" instead.
533 */
534#if Default_TOPN == Infinity
535 topn = smart_terminal ? Largest :
536 (topn_specified ? Largest : Nominal_TOPN);
537#else
538 topn = Largest;
539#endif
540 }
541
542 /* set header display accordingly */
543 display_header(topn > 0);
544
545 /* determine interactive state */
546 if (interactive == Maybe)
547 {
548 interactive = smart_terminal;
549 }
550
551 /* if # of displays not specified, fill it in */
552 if (displays == 0)
553 {
554 displays = smart_terminal ? Infinity : 1;
555 }
556
557 /* hold interrupt signals while setting up the screen and the handlers */
558#ifdef SIGHOLD
559 sighold(SIGINT);
560 sighold(SIGQUIT);
561 sighold(SIGTSTP);
562#else
563 old_sigmask = sigblock(Smask(SIGINT) | Smask(SIGQUIT) | Smask(SIGTSTP));
564#endif
565 init_screen();
566 (void) signal(SIGINT, leave);
567 (void) signal(SIGQUIT, leave);
568 (void) signal(SIGTSTP, tstop);
569#ifdef SIGWINCH
570 (void) signal(SIGWINCH, winch);
571#endif
572#ifdef SIGRELSE
573 sigrelse(SIGINT);
574 sigrelse(SIGQUIT);
575 sigrelse(SIGTSTP);
576#else
577 (void) sigsetmask(old_sigmask);
578#endif
579 if (warnings)
580 {
581 fputs("....", stderr);
582 fflush(stderr); /* why must I do this? */
583 sleep((unsigned)(3 * warnings));
584 fputc('\n', stderr);
585 }
586
587restart:
588
589 /*
590 * main loop -- repeat while display count is positive or while it
591 * indicates infinity (by being -1)
592 */
593
594 while ((displays == -1) || (displays-- > 0))
595 {
596 int (*compare)();
597
598
599 /* get the current stats */
600 get_system_info(&system_info);
601
602#ifdef ORDER
603 compare = compares[order_index];
604#else
605 if (displaymode == DISP_CPU)
606 compare = proc_compare;
607 else
608 compare = io_compare;
609#endif
610
611 /* get the current set of processes */
612 processes =
613 get_process_info(&system_info, &ps, compare);
614
615 /* display the load averages */
616 (*d_loadave)(system_info.last_pid,
617 system_info.load_avg);
618
619 /* display the current time */
620 /* this method of getting the time SHOULD be fairly portable */
621 time(&curr_time);
622 i_uptime(&system_info.boottime, &curr_time);
623 i_timeofday(&curr_time);
624
625 /* display process state breakdown */
626 (*d_procstates)(system_info.p_total,
627 system_info.procstates);
628
629 /* display the cpu state percentage breakdown */
630 if (dostates) /* but not the first time */
631 {
632 (*d_cpustates)(system_info.cpustates);
633 }
634 else
635 {
636 /* we'll do it next time */
637 if (smart_terminal)
638 {
639 z_cpustates();
640 }
641 else
642 {
643 putchar('\n');
644 }
645 dostates = Yes;
646 }
647
648 /* display memory stats */
649 (*d_memory)(system_info.memory);
650
651 /* display swap stats */
652 (*d_swap)(system_info.swap);
653
654 /* handle message area */
655 (*d_message)();
656
657 /* update the header area */
658 (*d_header)(header_text);
659
660 if (topn > 0)
661 {
662 /* determine number of processes to actually display */
663 /* this number will be the smallest of: active processes,
664 number user requested, number current screen accomodates */
665 active_procs = system_info.P_ACTIVE;
666 if (active_procs > topn)
667 {
668 active_procs = topn;
669 }
670 if (active_procs > max_topn)
671 {
672 active_procs = max_topn;
673 }
674
675 /* now show the top "n" processes. */
676 for (i = 0; i < active_procs; i++)
677 {
678 (*d_process)(i, format_next_process(processes, get_userid,
679 fmt_flags));
680 }
681 }
682 else
683 {
684 i = 0;
685 }
686
687 /* do end-screen processing */
688 u_endscreen(i);
689
690 /* now, flush the output buffer */
691 if (fflush(stdout) != 0)
692 {
693 new_message(MT_standout, " Write error on stdout");
694 putchar('\r');
695 quit(1);
696 /*NOTREACHED*/
697 }
698
699 /* only do the rest if we have more displays to show */
700 if (displays)
701 {
702 /* switch out for new display on smart terminals */
703 if (smart_terminal)
704 {
705 if (overstrike)
706 {
707 reset_display();
708 }
709 else
710 {
711 d_loadave = u_loadave;
712 d_procstates = u_procstates;
713 d_cpustates = u_cpustates;
714 d_memory = u_memory;
715 d_swap = u_swap;
716 d_message = u_message;
717 d_header = u_header;
718 d_process = u_process;
719 }
720 }
721
722 no_command = Yes;
723 if (!interactive)
724 {
|
726 /* set up alarm */
727 (void) signal(SIGALRM, onalrm);
728 (void) alarm((unsigned)delay);
729
730 /* wait for the rest of it .... */
731 pause();
|
| 725 sleep(delay); |
726 }
727 else while (no_command)
728 {
729 /* assume valid command unless told otherwise */
730 no_command = No;
731
732 /* set up arguments for select with timeout */
733 FD_ZERO(&readfds);
734 FD_SET(0, &readfds); /* for standard input */
735 timeout.tv_sec = delay;
736 timeout.tv_usec = 0;
737
738 if (leaveflag) {
739 end_screen();
740 exit(0);
741 }
742
743 if (tstopflag) {
744 /* move to the lower left */
745 end_screen();
746 fflush(stdout);
747
748 /* default the signal handler action */
749 (void) signal(SIGTSTP, SIG_DFL);
750
751 /* unblock the signal and send ourselves one */
752#ifdef SIGRELSE
753 sigrelse(SIGTSTP);
754#else
755 (void) sigsetmask(sigblock(0) & ~(1 << (SIGTSTP - 1)));
756#endif
757 (void) kill(0, SIGTSTP);
758
759 /* reset the signal handler */
760 (void) signal(SIGTSTP, tstop);
761
762 /* reinit screen */
763 reinit_screen();
764 reset_display();
765 tstopflag = 0;
766 goto restart;
767 }
768
769 if (winchflag) {
770 /* reascertain the screen dimensions */
771 get_screensize();
772
773 /* tell display to resize */
774 max_topn = display_resize();
775
776 /* reset the signal handler */
777 (void) signal(SIGWINCH, winch);
778
779 reset_display();
780 winchflag = 0;
781 goto restart;
782 }
783
784 /* wait for either input or the end of the delay period */
785 sel_ret = select(2, &readfds, NULL, NULL, &timeout);
786 if (sel_ret < 0 && errno != EINTR)
787 quit(0);
788 if (sel_ret > 0)
789 {
790 int newval;
791 char *errmsg;
792
793 /* something to read -- clear the message area first */
794 clear_message();
795
796 /* now read it and convert to command strchr */
797 /* (use "change" as a temporary to hold strchr) */
798 if (read(0, &ch, 1) != 1)
799 {
800 /* read error: either 0 or -1 */
801 new_message(MT_standout, " Read error on stdin");
802 putchar('\r');
803 quit(1);
804 /*NOTREACHED*/
805 }
806 if ((iptr = strchr(command_chars, ch)) == NULL)
807 {
808 if (ch != '\r' && ch != '\n')
809 {
810 /* illegal command */
811 new_message(MT_standout, " Command not understood");
812 }
813 putchar('\r');
814 no_command = Yes;
815 }
816 else
817 {
818 change = iptr - command_chars;
819 if (overstrike && change > CMD_OSLIMIT)
820 {
821 /* error */
822 new_message(MT_standout,
823 " Command cannot be handled by this terminal");
824 putchar('\r');
825 no_command = Yes;
826 }
827 else switch(change)
828 {
829 case CMD_redraw: /* redraw screen */
830 reset_display();
831 break;
832
833 case CMD_update: /* merely update display */
834 /* is the load average high? */
835 if (system_info.load_avg[0] > LoadMax)
836 {
837 /* yes, go home for visual feedback */
838 go_home();
839 fflush(stdout);
840 }
841 break;
842
843 case CMD_quit: /* quit */
844 quit(0);
845 /*NOTREACHED*/
846 break;
847
848 case CMD_help1: /* help */
849 case CMD_help2:
850 reset_display();
851 clear();
852 show_help();
853 standout("Hit any key to continue: ");
854 fflush(stdout);
855 (void) read(0, &ch, 1);
856 break;
857
858 case CMD_errors: /* show errors */
859 if (error_count() == 0)
860 {
861 new_message(MT_standout,
862 " Currently no errors to report.");
863 putchar('\r');
864 no_command = Yes;
865 }
866 else
867 {
868 reset_display();
869 clear();
870 show_errors();
871 standout("Hit any key to continue: ");
872 fflush(stdout);
873 (void) read(0, &ch, 1);
874 }
875 break;
876
877 case CMD_number1: /* new number */
878 case CMD_number2:
879 new_message(MT_standout,
880 "Number of processes to show: ");
881 newval = readline(tempbuf1, 8, Yes);
882 if (newval > -1)
883 {
884 if (newval > max_topn)
885 {
886 new_message(MT_standout | MT_delayed,
887 " This terminal can only display %d processes.",
888 max_topn);
889 putchar('\r');
890 }
891
892 if (newval == 0)
893 {
894 /* inhibit the header */
895 display_header(No);
896 }
897 else if (newval > topn && topn == 0)
898 {
899 /* redraw the header */
900 display_header(Yes);
901 d_header = i_header;
902 }
903 topn = newval;
904 }
905 break;
906
907 case CMD_delay: /* new seconds delay */
908 new_message(MT_standout, "Seconds to delay: ");
909 if ((i = readline(tempbuf1, 8, Yes)) > -1)
910 {
911 if ((delay = i) == 0 && getuid() != 0)
912 {
913 delay = 1;
914 }
915 }
916 clear_message();
917 break;
918
919 case CMD_displays: /* change display count */
920 new_message(MT_standout,
921 "Displays to show (currently %s): ",
922 displays == -1 ? "infinite" :
923 itoa(displays));
924 if ((i = readline(tempbuf1, 10, Yes)) > 0)
925 {
926 displays = i;
927 }
928 else if (i == 0)
929 {
930 quit(0);
931 }
932 clear_message();
933 break;
934
935 case CMD_kill: /* kill program */
936 new_message(0, "kill ");
937 if (readline(tempbuf2, sizeof(tempbuf2), No) > 0)
938 {
939 if ((errmsg = kill_procs(tempbuf2)) != NULL)
940 {
941 new_message(MT_standout, "%s", errmsg);
942 putchar('\r');
943 no_command = Yes;
944 }
945 }
946 else
947 {
948 clear_message();
949 }
950 break;
951
952 case CMD_renice: /* renice program */
953 new_message(0, "renice ");
954 if (readline(tempbuf2, sizeof(tempbuf2), No) > 0)
955 {
956 if ((errmsg = renice_procs(tempbuf2)) != NULL)
957 {
958 new_message(MT_standout, "%s", errmsg);
959 putchar('\r');
960 no_command = Yes;
961 }
962 }
963 else
964 {
965 clear_message();
966 }
967 break;
968
969 case CMD_idletog:
970 case CMD_idletog2:
971 ps.idle = !ps.idle;
972 new_message(MT_standout | MT_delayed,
973 " %sisplaying idle processes.",
974 ps.idle ? "D" : "Not d");
975 putchar('\r');
976 break;
977
978 case CMD_selftog:
979 ps.self = (ps.self == -1) ? getpid() : -1;
980 new_message(MT_standout | MT_delayed,
981 " %sisplaying self.",
982 (ps.self == -1) ? "D" : "Not d");
983 putchar('\r');
984 break;
985
986 case CMD_user:
987 new_message(MT_standout,
988 "Username to show: ");
989 if (readline(tempbuf2, sizeof(tempbuf2), No) > 0)
990 {
991 if (tempbuf2[0] == '+' &&
992 tempbuf2[1] == '\0')
993 {
994 ps.uid = -1;
995 }
996 else if ((i = userid(tempbuf2)) == -1)
997 {
998 new_message(MT_standout,
999 " %s: unknown user", tempbuf2);
1000 no_command = Yes;
1001 }
1002 else
1003 {
1004 ps.uid = i;
1005 }
1006 putchar('\r');
1007 }
1008 else
1009 {
1010 clear_message();
1011 }
1012 break;
1013
1014 case CMD_thrtog:
1015 ps.thread = !ps.thread;
1016 new_message(MT_standout | MT_delayed,
1017 " Displaying threads %s",
1018 ps.thread ? "separately" : "as a count");
1019 header_text = format_header(uname_field);
1020 reset_display();
1021 putchar('\r');
1022 break;
1023 case CMD_wcputog:
1024 ps.wcpu = !ps.wcpu;
1025 new_message(MT_standout | MT_delayed,
1026 " Displaying %s CPU",
1027 ps.wcpu ? "weighted" : "raw");
1028 header_text = format_header(uname_field);
1029 reset_display();
1030 putchar('\r');
1031 break;
1032 case CMD_viewtog:
1033 if (++displaymode == DISP_MAX)
1034 displaymode = 0;
1035 header_text = format_header(uname_field);
1036 display_header(Yes);
1037 d_header = i_header;
1038 reset_display();
1039 break;
1040 case CMD_viewsys:
1041 ps.system = !ps.system;
1042 break;
1043 case CMD_showargs:
1044 fmt_flags ^= FMT_SHOWARGS;
1045 break;
1046#ifdef ORDER
1047 case CMD_order:
1048 new_message(MT_standout,
1049 "Order to sort: ");
1050 if (readline(tempbuf2, sizeof(tempbuf2), No) > 0)
1051 {
1052 if ((i = string_index(tempbuf2, statics.order_names)) == -1)
1053 {
1054 new_message(MT_standout,
1055 " %s: unrecognized sorting order", tempbuf2);
1056 no_command = Yes;
1057 }
1058 else
1059 {
1060 order_index = i;
1061 }
1062 putchar('\r');
1063 }
1064 else
1065 {
1066 clear_message();
1067 }
1068 break;
1069#endif
1070 case CMD_jidtog:
1071 ps.jail = !ps.jail;
1072 new_message(MT_standout | MT_delayed,
1073 " %sisplaying jail ID.",
1074 ps.jail ? "D" : "Not d");
1075 header_text = format_header(uname_field);
1076 reset_display();
1077 putchar('\r');
1078 break;
1079 case CMD_kidletog:
1080 ps.kidle = !ps.kidle;
1081 new_message(MT_standout | MT_delayed,
1082 " %sisplaying system idle process.",
1083 ps.kidle ? "D" : "Not d");
1084 putchar('\r');
1085 break;
1086 case CMD_pcputog:
1087 pcpu_stats = !pcpu_stats;
1088 new_message(MT_standout | MT_delayed,
1089 " Displaying %sCPU statistics.",
1090 pcpu_stats ? "per-" : "global ");
1091 toggle_pcpustats();
1092 max_topn = display_updatecpus(&statics);
1093 reset_display();
1094 putchar('\r');
1095 break;
1096 default:
1097 new_message(MT_standout, " BAD CASE IN SWITCH!");
1098 putchar('\r');
1099 }
1100 }
1101
1102 /* flush out stuff that may have been written */
1103 fflush(stdout);
1104 }
1105 }
1106 }
1107 }
1108
1109#ifdef DEBUG
1110 fclose(debug);
1111#endif
1112 quit(0);
1113 /*NOTREACHED*/
1114}
1115
1116/*
1117 * reset_display() - reset all the display routine pointers so that entire
1118 * screen will get redrawn.
1119 */
1120
1121reset_display()
1122
1123{
1124 d_loadave = i_loadave;
1125 d_procstates = i_procstates;
1126 d_cpustates = i_cpustates;
1127 d_memory = i_memory;
1128 d_swap = i_swap;
1129 d_message = i_message;
1130 d_header = i_header;
1131 d_process = i_process;
1132}
1133
1134/*
1135 * signal handlers
1136 */
1137
1138sigret_t leave() /* exit under normal conditions -- INT handler */
1139
1140{
1141 leaveflag = 1;
1142}
1143
1144sigret_t tstop(i) /* SIGTSTP handler */
1145
1146int i;
1147
1148{
1149 tstopflag = 1;
1150}
1151
1152#ifdef SIGWINCH
1153sigret_t winch(i) /* SIGWINCH handler */
1154
1155int i;
1156
1157{
1158 winchflag = 1;
1159}
1160#endif
1161
1162void quit(status) /* exit under duress */
1163
1164int status;
1165
1166{
1167 end_screen();
1168 exit(status);
1169 /*NOTREACHED*/
1170}
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1177
1178sigret_t onalrm() /* SIGALRM handler */
1179
1180{
1181 /* this is only used in batch mode to break out of the pause() */
1182 /* return; */
1183}
1184
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