Commit | Line | Data |
---|---|---|
e6854b3f | 1 | ;;; proced.el --- operate on system processes like dired |
37e4d8ed | 2 | |
1ba1a8b9 RW |
3 | ;; Copyright (C) 2008 Free Software Foundation, Inc. |
4 | ||
37e4d8ed | 5 | ;; Author: Roland Winkler <Roland.Winkler@physik.uni-erlangen.de> |
37e4d8ed RW |
6 | ;; Keywords: Processes, Unix |
7 | ||
1ba1a8b9 RW |
8 | ;; This file is part of GNU Emacs. |
9 | ||
eb3fa2cf | 10 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
1ba1a8b9 | 11 | ;; it under the terms of the GNU General Public License as published by |
eb3fa2cf GM |
12 | ;; the Free Software Foundation, either version 3 of the License, or |
13 | ;; (at your option) any later version. | |
37e4d8ed | 14 | |
1ba1a8b9 RW |
15 | ;; GNU Emacs is distributed in the hope that it will be useful, |
16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ;; GNU General Public License for more details. | |
37e4d8ed RW |
19 | |
20 | ;; You should have received a copy of the GNU General Public License | |
eb3fa2cf | 21 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
37e4d8ed RW |
22 | |
23 | ;;; Commentary: | |
24 | ||
d74d0c42 RW |
25 | ;; Proced makes an Emacs buffer containing a listing of the current |
26 | ;; system processes. You can use the normal Emacs commands to move around | |
27 | ;; in this buffer, and special Proced commands to operate on the processes | |
da643190 | 28 | ;; listed. See `proced-mode' for getting started. |
37e4d8ed | 29 | ;; |
e6854b3f | 30 | ;; To do: |
da643190 | 31 | ;; - interactive temporary customizability of flags in `proced-grammar-alist' |
9f583d14 | 32 | ;; - allow "sudo kill PID", "renice PID" |
da643190 RW |
33 | ;; |
34 | ;; Wishlist | |
35 | ;; - tree view like pstree(1) | |
413e65fe RW |
36 | ;; |
37 | ;; Thoughts and Ideas | |
38 | ;; - Currently, `system-process-attributes' returns the list of | |
39 | ;; command-line arguments of a process as one concatenated string. | |
40 | ;; This format is compatible with `shell-command'. Also, under | |
41 | ;; MS-Windows, the command-line arguments are actually stored as a | |
42 | ;; single string, so that it is impossible to reverse-engineer it back | |
43 | ;; into separate arguments. Alternatively, `system-process-attributes' | |
44 | ;; could (try to) return a list of strings that correspond to individual | |
45 | ;; command-line arguments. Then one could feed such a list of | |
46 | ;; command-line arguments into `call-process' or `start-process'. | |
47 | ;; Are there real-world applications when such a feature would be useful? | |
48 | ;; What about something like `proced-restart-pid'? | |
37e4d8ed RW |
49 | |
50 | ;;; Code: | |
51 | ||
d74d0c42 RW |
52 | (require 'time-date) ; for `with-decoded-time-value' |
53 | ||
37e4d8ed RW |
54 | (defgroup proced nil |
55 | "Proced mode." | |
56 | :group 'processes | |
57 | :group 'unix | |
58 | :prefix "proced-") | |
59 | ||
e6854b3f RW |
60 | (defcustom proced-signal-function 'signal-process |
61 | "Name of signal function. | |
62 | It can be an elisp function (usually `signal-process') or a string specifying | |
63 | the external command (usually \"kill\")." | |
37e4d8ed | 64 | :group 'proced |
e6854b3f RW |
65 | :type '(choice (function :tag "function") |
66 | (string :tag "command"))) | |
37e4d8ed RW |
67 | |
68 | (defcustom proced-signal-list | |
d74d0c42 | 69 | '( ;; signals supported on all POSIX compliant systems |
9f583d14 | 70 | ("HUP (1. Hangup)") |
37e4d8ed RW |
71 | ("INT (2. Terminal interrupt)") |
72 | ("QUIT (3. Terminal quit)") | |
73 | ("ABRT (6. Process abort)") | |
9f583d14 | 74 | ("KILL (9. Kill - cannot be caught or ignored)") |
37e4d8ed | 75 | ("ALRM (14. Alarm Clock)") |
9f583d14 RW |
76 | ("TERM (15. Termination)") |
77 | ;; POSIX 1003.1-2001 | |
78 | ;; Which systems do not support these signals so that we can | |
79 | ;; exclude them from `proced-signal-list'? | |
80 | ("CONT (Continue executing)") | |
81 | ("STOP (Stop executing / pause - cannot be caught or ignored)") | |
82 | ("TSTP (Terminal stop / pause)")) | |
37e4d8ed RW |
83 | "List of signals, used for minibuffer completion." |
84 | :group 'proced | |
85 | :type '(repeat (string :tag "signal"))) | |
86 | ||
d74d0c42 RW |
87 | ;; For which attributes can we use a fixed width of the output field? |
88 | ;; A fixed width speeds up formatting, yet it can make | |
89 | ;; `proced-grammar-alist' system-dependent. | |
90 | ;; (If proced runs like top(1) we want it to be fast.) | |
91 | ;; | |
92 | ;; If it is impossible / unlikely that an attribute has the same value | |
93 | ;; for two processes, then sorting can be based on one ordinary (fast) | |
94 | ;; predicate like `<'. Otherwise, a list of proced predicates can be used | |
95 | ;; to refine the sort. | |
96 | ;; | |
97 | ;; It would be neat if one could temporarily override the following | |
98 | ;; predefined rules. | |
204ebc5b | 99 | (defcustom proced-grammar-alist |
d74d0c42 RW |
100 | '( ;; attributes defined in `system-process-attributes' |
101 | (euid "EUID" "%d" right proced-< nil (euid pid) (nil t nil)) | |
da643190 | 102 | (user "USER" nil left proced-string-lessp nil (user pid) (nil t nil)) |
d74d0c42 | 103 | (egid "EGID" "%d" right proced-< nil (egid euid pid) (nil t nil)) |
da643190 RW |
104 | (group "GROUP" nil left proced-string-lessp nil (group user pid) (nil t nil)) |
105 | (comm "COMMAND" nil left proced-string-lessp nil (comm pid) (nil t nil)) | |
106 | (state "STAT" nil left proced-string-lessp nil (state pid) (nil t nil)) | |
b4f671ce RW |
107 | (ppid "PPID" "%d" right proced-< nil (ppid pid) |
108 | ((lambda (ppid) (proced-filter-parents proced-process-alist ppid)) . | |
109 | "refine to process parents")) | |
d74d0c42 RW |
110 | (pgrp "PGRP" "%d" right proced-< nil (pgrp euid pid) (nil t nil)) |
111 | (sess "SESS" "%d" right proced-< nil (sess pid) (nil t nil)) | |
112 | (ttname "TTY" proced-format-ttname left proced-string-lessp nil (ttname pid) (nil t nil)) | |
113 | (tpgid "TPGID" "%d" right proced-< nil (tpgid pid) (nil t nil)) | |
114 | (minflt "MINFLT" "%d" right proced-< nil (minflt pid) (nil t t)) | |
115 | (majflt "MAJFLT" "%d" right proced-< nil (majflt pid) (nil t t)) | |
116 | (cminflt "CMINFLT" "%d" right proced-< nil (cminflt pid) (nil t t)) | |
117 | (cmajflt "CMAJFLT" "%d" right proced-< nil (cmajflt pid) (nil t t)) | |
118 | (utime "UTIME" proced-format-time right proced-time-lessp t (utime pid) (nil t t)) | |
119 | (stime "STIME" proced-format-time right proced-time-lessp t (stime pid) (nil t t)) | |
120 | (cutime "CUTIME" proced-format-time right proced-time-lessp t (cutime pid) (nil t t)) | |
121 | (cstime "CSTIME" proced-format-time right proced-time-lessp t (cstime pid) (nil t t)) | |
122 | (pri "PR" "%d" right proced-< t (pri pid) (nil t t)) | |
123 | (nice "NI" "%3d" 3 proced-< t (nice pid) (t t nil)) | |
124 | (thcount "THCOUNT" "%d" right proced-< t (thcount pid) (nil t t)) | |
125 | (start "START" proced-format-start 6 proced-time-lessp nil (start pid) (t t nil)) | |
126 | (vsize "VSIZE" "%d" right proced-< t (vsize pid) (nil t t)) | |
127 | (rss "RSS" "%d" right proced-< t (rss pid) (nil t t)) | |
128 | (etime "ETIME" proced-format-time right proced-time-lessp t (etime pid) (nil t t)) | |
129 | (pcpu "%CPU" "%.1f" right proced-< t (pcpu pid) (nil t t)) | |
130 | (pmem "%MEM" "%.1f" right proced-< t (pmem pid) (nil t t)) | |
da643190 | 131 | (args "ARGS" proced-format-args left proced-string-lessp nil (args pid) (nil t nil)) |
d74d0c42 RW |
132 | ;; |
133 | ;; attributes defined by proced (see `proced-process-attributes') | |
b4f671ce RW |
134 | (pid "PID" "%d" right proced-< nil (pid) |
135 | ((lambda (ppid) (proced-filter-children proced-process-alist ppid)) . | |
136 | "refine to process children")) | |
d74d0c42 RW |
137 | ;; time: sum of utime and stime |
138 | (time "TIME" proced-format-time right proced-time-lessp t (time pid) (nil t t)) | |
139 | ;; ctime: sum of cutime and cstime | |
140 | (ctime "CTIME" proced-format-time right proced-time-lessp t (ctime pid) (nil t t))) | |
141 | "Alist of rules for handling Proced attributes. | |
142 | ||
143 | Each element has the form | |
144 | ||
b4f671ce | 145 | (KEY NAME FORMAT JUSTIFY PREDICATE REVERSE SORT-SCHEME REFINER). |
d74d0c42 | 146 | |
204ebc5b | 147 | Symbol KEY is the car of a process attribute. |
d74d0c42 | 148 | |
204ebc5b | 149 | String NAME appears in the header line. |
d74d0c42 RW |
150 | |
151 | FORMAT specifies the format for displaying the attribute values. | |
da643190 RW |
152 | It can be a string passed to `format'. It can be a function called |
153 | with one argument, the value of the attribute. Nil means take as is. | |
d74d0c42 RW |
154 | |
155 | If JUSTIFY is an integer, its modulus gives the width of the attribute | |
da643190 | 156 | values formatted with FORMAT. If JUSTIFY is positive, NAME appears |
d74d0c42 RW |
157 | right-justified, otherwise it appears left-justified. If JUSTIFY is 'left |
158 | or 'right, the field width is calculated from all field values in the listing. | |
159 | If JUSTIFY is 'left, the field values are formatted left-justified and | |
160 | right-justified otherwise. | |
161 | ||
162 | PREDICATE is the predicate for sorting and filtering the process listing | |
163 | based on attribute KEY. PREDICATE takes two arguments P1 and P2, | |
164 | the corresponding attribute values of two processes. PREDICATE should | |
165 | return 'equal if P1 has same rank like P2. Any other non-nil value says | |
166 | that P1 is \"less than\" P2, or nil if not. | |
167 | ||
b4f671ce RW |
168 | PREDICATE defines an ascending sort order. REVERSE is non-nil if the sort |
169 | order is descending. | |
d74d0c42 | 170 | |
da643190 | 171 | SORT-SCHEME is a list (KEY1 KEY2 ...) defining a hierarchy of rules |
d74d0c42 RW |
172 | for sorting the process listing. KEY1, KEY2, ... are KEYs appearing as cars |
173 | of `proced-grammar-alist'. First the PREDICATE of KEY1 is evaluated. | |
da643190 | 174 | If it yields non-equal, it defines the sort order for the corresponding |
d74d0c42 RW |
175 | processes. If it evaluates to 'equal the PREDICATE of KEY2 is evaluated, etc. |
176 | ||
b4f671ce | 177 | REFINER can be a list of flags (LESS-B EQUAL-B LARGER-B) used by the command |
da643190 RW |
178 | `proced-refine' (see there) to refine the listing based on attribute KEY. |
179 | This command compares the value of attribute KEY of every process with | |
180 | the value of attribute KEY of the process at the position of point | |
181 | using PREDICATE. | |
d74d0c42 RW |
182 | If PREDICATE yields non-nil, the process is accepted if LESS-B is non-nil. |
183 | If PREDICATE yields 'equal, the process is accepted if EQUAL-B is non-nil. | |
b4f671ce RW |
184 | If PREDICATE yields nil, the process is accepted if LARGER-B is non-nil. |
185 | ||
186 | REFINER can also be a cons pair (FUNCTION . HELP-ECHO). | |
187 | FUNCTION is called with one argument, the PID of the process at the position | |
188 | of point. The function must return a list of PIDs that is used for the refined | |
189 | listing. HELP-ECHO is a string that is shown when mouse is over this field. | |
190 | ||
191 | If REFINER is nil no refinement is done." | |
204ebc5b RW |
192 | :group 'proced |
193 | :type '(repeat (list :tag "Attribute" | |
194 | (symbol :tag "Key") | |
195 | (string :tag "Header") | |
196 | (choice :tag "Format" | |
197 | (const :tag "None" nil) | |
198 | (string :tag "Format String") | |
199 | (function :tag "Formatting Function")) | |
200 | (choice :tag "Justification" | |
201 | (const :tag "left" left) | |
202 | (const :tag "right" right) | |
203 | (integer :tag "width")) | |
204 | (function :tag "Predicate") | |
b4f671ce | 205 | (boolean :tag "Descending Sort Order") |
204ebc5b | 206 | (repeat :tag "Sort Scheme" (symbol :tag "Key")) |
b4f671ce RW |
207 | (choice :tag "Refiner" |
208 | (list :tag "Refine Flags" | |
209 | (boolean :tag "Less") | |
210 | (boolean :tag "Equal") | |
211 | (boolean :tag "Larger")) | |
212 | (cons (function :tag "Refinement Function") | |
213 | (string :tag "Help echo")) | |
214 | (const :tag "None" nil))))) | |
204ebc5b RW |
215 | |
216 | (defcustom proced-custom-attributes nil | |
d74d0c42 RW |
217 | "List of functions defining custom attributes. |
218 | This variable extends the functionality of `proced-process-attributes'. | |
219 | Each function is called with one argument, the list of attributes | |
220 | of a system process. It returns a cons cell of the form (KEY . VALUE) | |
204ebc5b RW |
221 | like `system-process-attributes'. This cons cell is appended to the list |
222 | returned by `proced-process-attributes'. | |
223 | If the function returns nil, the value is ignored." | |
224 | :group 'proced | |
225 | :type '(repeat (function :tag "Attribute"))) | |
d74d0c42 RW |
226 | |
227 | ;; Formatting and sorting rules are defined "per attribute". If formatting | |
228 | ;; and / or sorting should use more than one attribute, it appears more | |
229 | ;; transparent to define a new derived attribute, so that formatting and | |
230 | ;; sorting can use them consistently. (Are there exceptions to this rule? | |
231 | ;; Would it be advantageous to have yet more general methods available?) | |
232 | ;; Sorting can also be based on attributes that are invisible in the listing. | |
233 | ||
204ebc5b | 234 | (defcustom proced-format-alist |
b4f671ce RW |
235 | '((short user pid pcpu pmem start time (args comm)) |
236 | (medium user pid pcpu pmem vsize rss ttname state start time (args comm)) | |
d74d0c42 | 237 | (long user euid group pid pri nice pcpu pmem vsize rss ttname state |
b4f671ce RW |
238 | start time (args comm)) |
239 | (verbose user euid group egid pid ppid pgrp sess pri nice pcpu pmem | |
d74d0c42 | 240 | state thcount vsize rss ttname tpgid minflt majflt cminflt cmajflt |
b4f671ce | 241 | start time utime stime ctime cutime cstime etime (args comm))) |
d74d0c42 RW |
242 | "Alist of formats of listing. |
243 | The car of each element is a symbol, the name of the format. | |
b4f671ce RW |
244 | The cdr is a list of attribute keys appearing in `proced-grammar-alist'. |
245 | An element of this list may also be a list of attribute keys that specifies | |
246 | alternatives. If the first attribute is absent for a process, use the second | |
247 | one, etc." | |
204ebc5b RW |
248 | :group 'proced |
249 | :type '(alist :key-type (symbol :tag "Format Name") | |
b4f671ce RW |
250 | :value-type (repeat :tag "Keys" |
251 | (choice (symbol :tag "") | |
252 | (repeat :tag "Alternative Keys" | |
253 | (symbol :tag "")))))) | |
d74d0c42 | 254 | |
204ebc5b | 255 | (defcustom proced-format 'short |
d74d0c42 RW |
256 | "Current format of Proced listing. |
257 | It can be the car of an element of `proced-format-alist'. | |
204ebc5b RW |
258 | It can also be a list of keys appearing in `proced-grammar-alist'." |
259 | :group 'proced | |
260 | :type '(choice (symbol :tag "Format Name") | |
261 | (repeat :tag "Keys" (symbol :tag "")))) | |
d74d0c42 RW |
262 | (make-variable-buffer-local 'proced-format) |
263 | ||
264 | ;; FIXME: is there a better name for filter `user' that does not coincide | |
265 | ;; with an attribute key? | |
204ebc5b | 266 | (defcustom proced-filter-alist |
d74d0c42 RW |
267 | `((user (user . ,(concat "\\`" (user-real-login-name) "\\'"))) |
268 | (user-running (user . ,(concat "\\`" (user-real-login-name) "\\'")) | |
269 | (state . "\\`[Rr]\\'")) | |
270 | (all) | |
271 | (all-running (state . "\\`[Rr]\\'")) | |
272 | (emacs (fun-all . (lambda (list) | |
273 | (proced-filter-children list ,(emacs-pid)))))) | |
274 | "Alist of process filters. | |
275 | The car of each element is a symbol, the name of the filter. | |
276 | The cdr is a list of elementary filters that are applied to every process. | |
277 | A process is displayed if it passes all elementary filters of a selected | |
278 | filter. | |
279 | ||
280 | An elementary filter can be one of the following: | |
281 | \(KEY . REGEXP) If value of attribute KEY matches REGEXP, | |
282 | accept this process. | |
283 | \(KEY . FUN) Apply function FUN to attribute KEY. Accept this process, | |
284 | if FUN returns non-nil. | |
285 | \(function . FUN) For each process, apply function FUN to list of attributes | |
286 | of each. Accept the process if FUN returns non-nil. | |
287 | \(fun-all . FUN) Apply function FUN to entire process list. | |
204ebc5b RW |
288 | FUN must return the filtered list." |
289 | :group 'proced | |
290 | :type '(repeat (cons :tag "Filter" | |
291 | (symbol :tag "Filter Name") | |
292 | (repeat :tag "Filters" | |
293 | (choice (cons :tag "Key . Regexp" (symbol :tag "Key") regexp) | |
294 | (cons :tag "Key . Function" (symbol :tag "Key") function) | |
295 | (cons :tag "Function" (const :tag "Key: function" function) function) | |
296 | (cons :tag "Fun-all" (const :tag "Key: fun-all" fun-all) function)))))) | |
297 | ||
298 | (defcustom proced-filter 'user | |
d74d0c42 RW |
299 | "Current filter of proced listing. |
300 | It can be the car of an element of `proced-filter-alist'. | |
301 | It can also be a list of elementary filters as in the cdrs of the elements | |
204ebc5b RW |
302 | of `proced-filter-alist'." |
303 | :group 'proced | |
304 | :type '(choice (symbol :tag "Filter Name") | |
305 | (repeat :tag "Filters" | |
306 | (choice (cons :tag "Key . Regexp" (symbol :tag "Key") regexp) | |
307 | (cons :tag "Key . Function" (symbol :tag "Key") function) | |
308 | (cons :tag "Function" (const :tag "Key: function" function) function) | |
309 | (cons :tag "Fun-all" (const :tag "Key: fun-all" fun-all) function))))) | |
d74d0c42 RW |
310 | (make-variable-buffer-local 'proced-filter) |
311 | ||
204ebc5b | 312 | (defcustom proced-sort 'pcpu |
da643190 | 313 | "Current sort scheme for proced listing. |
d74d0c42 RW |
314 | It must be the KEY of an element of `proced-grammar-alist'. |
315 | It can also be a list of KEYs as in the SORT-SCHEMEs of the elements | |
204ebc5b RW |
316 | of `proced-grammar-alist'." |
317 | :group 'proced | |
318 | :type '(choice (symbol :tag "Sort Scheme") | |
319 | (repeat :tag "Key List" (symbol :tag "Key")))) | |
d74d0c42 RW |
320 | (make-variable-buffer-local 'proced-format) |
321 | ||
b4f671ce RW |
322 | (defcustom proced-descend t |
323 | "Non-nil if proced listing is sorted in descending order." | |
324 | :group 'proced | |
325 | :type '(boolean :tag "Descending Sort Order")) | |
326 | (make-variable-buffer-local 'proced-descend) | |
327 | ||
d74d0c42 RW |
328 | (defcustom proced-goal-attribute 'args |
329 | "If non-nil, key of the attribute that defines the `goal-column'." | |
330 | :group 'proced | |
331 | :type '(choice (const :tag "none" nil) | |
332 | (symbol :tag "key"))) | |
333 | ||
413e65fe | 334 | (defcustom proced-auto-update-interval 5 |
204ebc5b | 335 | "Time interval in seconds for auto updating Proced buffers." |
d74d0c42 RW |
336 | :group 'proced |
337 | :type 'integer) | |
338 | ||
413e65fe | 339 | (defcustom proced-auto-update-flag nil |
da643190 | 340 | "Non-nil for auto update of a Proced buffer. |
413e65fe | 341 | Can be changed interactively via `proced-toggle-auto-update'." |
d74d0c42 RW |
342 | :group 'proced |
343 | :type 'boolean) | |
413e65fe | 344 | (make-variable-buffer-local 'proced-auto-update-flag) |
d74d0c42 | 345 | |
92d9ce48 | 346 | ;; Internal variables |
d74d0c42 | 347 | |
4ed46aef RW |
348 | (defvar proced-available (not (null (list-system-processes))) |
349 | "Non-nil means Proced is known to work on this system.") | |
350 | ||
d74d0c42 | 351 | (defvar proced-process-alist nil |
da643190 RW |
352 | "Alist of processes displayed by Proced. |
353 | The car of each element is the PID, and the cdr is a list of | |
354 | cons pairs, see `proced-process-attributes'.") | |
d74d0c42 RW |
355 | (make-variable-buffer-local 'proced-process-alist) |
356 | ||
357 | (defvar proced-sort-internal nil | |
b4f671ce RW |
358 | "Sort scheme for listing (internal format). |
359 | It is a list of lists (KEY PREDICATE REVERSE).") | |
d74d0c42 | 360 | |
37e4d8ed RW |
361 | (defvar proced-marker-char ?* ; the answer is 42 |
362 | "In proced, the current mark character.") | |
363 | ||
aa5fecb5 RW |
364 | ;; Faces and font-lock code taken from dired, |
365 | ;; but face variables are deprecated for new code. | |
37e4d8ed RW |
366 | (defgroup proced-faces nil |
367 | "Faces used by Proced." | |
368 | :group 'proced | |
369 | :group 'faces) | |
370 | ||
37e4d8ed RW |
371 | (defface proced-mark |
372 | '((t (:inherit font-lock-constant-face))) | |
373 | "Face used for proced marks." | |
374 | :group 'proced-faces) | |
37e4d8ed RW |
375 | |
376 | (defface proced-marked | |
377 | '((t (:inherit font-lock-warning-face))) | |
378 | "Face used for marked processes." | |
379 | :group 'proced-faces) | |
37e4d8ed | 380 | |
da643190 RW |
381 | (defface proced-sort-header |
382 | '((t (:inherit font-lock-keyword-face))) | |
383 | "Face used for header of attribute used for sorting." | |
384 | :group 'proced-faces) | |
da643190 | 385 | |
37e4d8ed RW |
386 | (defvar proced-re-mark "^[^ \n]" |
387 | "Regexp matching a marked line. | |
388 | Important: the match ends just after the marker.") | |
389 | ||
d74d0c42 RW |
390 | (defvar proced-header-line nil |
391 | "Headers in Proced buffer as a string.") | |
392 | (make-variable-buffer-local 'proced-header-line) | |
393 | ||
d74d0c42 RW |
394 | (defvar proced-process-tree nil |
395 | "Process tree of listing (internal variable).") | |
396 | ||
413e65fe RW |
397 | (defvar proced-auto-update-timer nil |
398 | "Stores if Proced auto update timer is already installed.") | |
d74d0c42 | 399 | |
204ebc5b RW |
400 | (defvar proced-log-buffer "*Proced log*" |
401 | "Name of Proced Log buffer.") | |
402 | ||
d74d0c42 RW |
403 | (defconst proced-help-string |
404 | "(n)ext, (p)revious, (m)ark, (u)nmark, (k)ill, (q)uit (type ? for more help)" | |
405 | "Help string for proced.") | |
406 | ||
407 | (defconst proced-header-help-echo | |
da643190 | 408 | "mouse-1, mouse-2: sort by attribute %s%s (%s)" |
d74d0c42 RW |
409 | "Help string shown when mouse is over a sortable header.") |
410 | ||
411 | (defconst proced-field-help-echo | |
da643190 RW |
412 | "mouse-2, RET: refine by attribute %s %s" |
413 | "Help string shown when mouse is over a refinable field.") | |
37e4d8ed RW |
414 | |
415 | (defvar proced-font-lock-keywords | |
aa5fecb5 RW |
416 | `(;; (Any) proced marks. |
417 | (,proced-re-mark . 'proced-mark) | |
418 | ;; Processes marked with `proced-marker-char' | |
419 | ;; Should we make sure that only certain attributes are font-locked? | |
420 | (,(concat "^[" (char-to-string proced-marker-char) "]") | |
421 | ".+" (proced-move-to-goal-column) nil (0 'proced-marked)))) | |
37e4d8ed RW |
422 | |
423 | (defvar proced-mode-map | |
424 | (let ((km (make-sparse-keymap))) | |
92d9ce48 RW |
425 | ;; moving |
426 | (define-key km " " 'proced-next-line) | |
d74d0c42 RW |
427 | (define-key km "n" 'next-line) |
428 | (define-key km "p" 'previous-line) | |
429 | (define-key km "\C-n" 'next-line) | |
430 | (define-key km "\C-p" 'previous-line) | |
431 | (define-key km "\C-?" 'previous-line) | |
432 | (define-key km [down] 'next-line) | |
433 | (define-key km [up] 'previous-line) | |
92d9ce48 | 434 | ;; marking |
d74d0c42 | 435 | (define-key km "d" 'proced-mark) ; Dired compatibility ("delete") |
37e4d8ed | 436 | (define-key km "m" 'proced-mark) |
37e4d8ed | 437 | (define-key km "u" 'proced-unmark) |
e6854b3f | 438 | (define-key km "\177" 'proced-unmark-backward) |
92d9ce48 | 439 | (define-key km "M" 'proced-mark-all) |
37e4d8ed | 440 | (define-key km "U" 'proced-unmark-all) |
e6854b3f | 441 | (define-key km "t" 'proced-toggle-marks) |
d74d0c42 RW |
442 | (define-key km "C" 'proced-mark-children) |
443 | (define-key km "P" 'proced-mark-parents) | |
444 | ;; filtering | |
445 | (define-key km "f" 'proced-filter-interactive) | |
da643190 RW |
446 | (define-key km [mouse-2] 'proced-refine) |
447 | (define-key km "\C-m" 'proced-refine) | |
92d9ce48 | 448 | ;; sorting |
61548252 RW |
449 | (define-key km "sc" 'proced-sort-pcpu) |
450 | (define-key km "sm" 'proced-sort-pmem) | |
451 | (define-key km "sp" 'proced-sort-pid) | |
452 | (define-key km "ss" 'proced-sort-start) | |
d74d0c42 | 453 | (define-key km "sS" 'proced-sort-interactive) |
61548252 | 454 | (define-key km "st" 'proced-sort-time) |
d74d0c42 | 455 | (define-key km "su" 'proced-sort-user) |
da643190 RW |
456 | ;; similar to `Buffer-menu-sort-by-column' |
457 | (define-key km [header-line mouse-1] 'proced-sort-header) | |
d74d0c42 RW |
458 | (define-key km [header-line mouse-2] 'proced-sort-header) |
459 | ;; formatting | |
460 | (define-key km "F" 'proced-format-interactive) | |
92d9ce48 | 461 | ;; operate |
9f583d14 | 462 | (define-key km "o" 'proced-omit-processes) |
92d9ce48 RW |
463 | (define-key km "x" 'proced-send-signal) ; Dired compatibility |
464 | (define-key km "k" 'proced-send-signal) ; kill processes | |
465 | ;; misc | |
d74d0c42 | 466 | (define-key km "g" 'revert-buffer) ; Dired compatibility |
92d9ce48 RW |
467 | (define-key km "h" 'describe-mode) |
468 | (define-key km "?" 'proced-help) | |
469 | (define-key km "q" 'quit-window) | |
37e4d8ed RW |
470 | (define-key km [remap undo] 'proced-undo) |
471 | (define-key km [remap advertised-undo] 'proced-undo) | |
472 | km) | |
9f583d14 | 473 | "Keymap for proced commands.") |
37e4d8ed RW |
474 | |
475 | (easy-menu-define | |
476 | proced-menu proced-mode-map "Proced Menu" | |
9f583d14 RW |
477 | `("Proced" |
478 | ["Mark" proced-mark | |
479 | :help "Mark Current Process"] | |
480 | ["Unmark" proced-unmark | |
481 | :help "Unmark Current Process"] | |
482 | ["Mark All" proced-mark-all | |
483 | :help "Mark All Processes"] | |
484 | ["Unmark All" proced-unmark-all | |
485 | :help "Unmark All Process"] | |
486 | ["Toggle Marks" proced-toggle-marks | |
487 | :help "Marked Processes Become Unmarked, and Vice Versa"] | |
d74d0c42 RW |
488 | ["Mark Children" proced-mark-children |
489 | :help "Mark Current Process and its Children"] | |
490 | ["Mark Parents" proced-mark-parents | |
491 | :help "Mark Current Process and its Parents"] | |
e6854b3f | 492 | "--" |
d74d0c42 RW |
493 | ("Filters" |
494 | :help "Select Filter for Process Listing" | |
495 | ,@(mapcar (lambda (el) | |
496 | (let ((filter (car el))) | |
497 | `[,(symbol-name filter) | |
498 | (proced-filter-interactive ',filter) | |
499 | :style radio | |
500 | :selected (eq proced-filter ',filter)])) | |
501 | proced-filter-alist)) | |
502 | ("Sorting" | |
da643190 | 503 | :help "Select Sort Scheme" |
d74d0c42 RW |
504 | ["Sort..." proced-sort-interactive |
505 | :help "Sort Process List"] | |
506 | "--" | |
507 | ["Sort by %CPU" proced-sort-pcpu] | |
508 | ["Sort by %MEM" proced-sort-pmem] | |
509 | ["Sort by PID" proced-sort-pid] | |
510 | ["Sort by START" proced-sort-start] | |
511 | ["Sort by TIME" proced-sort-time] | |
512 | ["Sort by USER" proced-sort-user]) | |
513 | ("Formats" | |
514 | :help "Select Format for Process Listing" | |
515 | ,@(mapcar (lambda (el) | |
516 | (let ((format (car el))) | |
517 | `[,(symbol-name format) | |
518 | (proced-format-interactive ',format) | |
519 | :style radio | |
520 | :selected (eq proced-format ',format)])) | |
521 | proced-format-alist)) | |
61548252 | 522 | "--" |
9f583d14 RW |
523 | ["Omit Marked Processes" proced-omit-processes |
524 | :help "Omit Marked Processes in Process Listing."] | |
37e4d8ed | 525 | "--" |
9f583d14 RW |
526 | ["Revert" revert-buffer |
527 | :help "Revert Process Listing"] | |
413e65fe | 528 | ["Auto Update" proced-toggle-auto-update |
b4f671ce | 529 | :style toggle |
413e65fe | 530 | :selected (eval proced-auto-update-flag) |
da643190 | 531 | :help "Auto Update of Proced Buffer"] |
9f583d14 | 532 | ["Send signal" proced-send-signal |
d74d0c42 | 533 | :help "Send Signal to Marked Processes"])) |
9f583d14 | 534 | |
92d9ce48 | 535 | ;; helper functions |
e6854b3f | 536 | (defun proced-marker-regexp () |
61548252 | 537 | "Return regexp matching `proced-marker-char'." |
92d9ce48 | 538 | ;; `proced-marker-char' must appear in column zero |
e6854b3f RW |
539 | (concat "^" (regexp-quote (char-to-string proced-marker-char)))) |
540 | ||
541 | (defun proced-success-message (action count) | |
61548252 | 542 | "Display success message for ACTION performed for COUNT processes." |
e6854b3f RW |
543 | (message "%s %s process%s" action count (if (= 1 count) "" "es"))) |
544 | ||
d74d0c42 RW |
545 | ;; Unlike dired, we do not define our own commands for vertical motion. |
546 | ;; If `goal-column' is set, `next-line' and `previous-line' are fancy | |
547 | ;; commands to satisfy our modest needs. If `proced-goal-attribute' | |
548 | ;; and/or `goal-column' are not set, `next-line' and `previous-line' | |
549 | ;; are really what we need to preserve the column of point. | |
550 | ;; We use `proced-move-to-goal-column' for "non-interactive" cases only | |
551 | ;; to get a well-defined position of point. | |
552 | ||
92d9ce48 | 553 | (defun proced-move-to-goal-column () |
da643190 | 554 | "Move to `goal-column' if non-nil. Return position of point." |
e6854b3f | 555 | (beginning-of-line) |
d74d0c42 RW |
556 | (unless (eobp) |
557 | (if goal-column | |
558 | (forward-char goal-column) | |
da643190 RW |
559 | (forward-char 2))) |
560 | (point)) | |
d74d0c42 RW |
561 | |
562 | (defun proced-header-line () | |
563 | "Return header line for Proced buffer." | |
564 | (list (propertize " " 'display '(space :align-to 0)) | |
565 | (replace-regexp-in-string ;; preserve text properties | |
566 | "\\(%\\)" "\\1\\1" (substring proced-header-line (window-hscroll))))) | |
567 | ||
568 | (defun proced-pid-at-point () | |
569 | "Return pid of system process at point. | |
570 | Return nil if point is not on a process line." | |
571 | (save-excursion | |
572 | (beginning-of-line) | |
573 | (if (looking-at "^. .") | |
574 | (get-text-property (match-end 0) 'proced-pid)))) | |
575 | ||
576 | ;; proced mode | |
e6854b3f | 577 | |
079ba9b7 SM |
578 | (define-derived-mode proced-mode nil "Proced" |
579 | "Mode for displaying UNIX system processes and sending signals to them. | |
204ebc5b RW |
580 | Type \\[proced] to start a Proced session. In a Proced buffer |
581 | type \\<proced-mode-map>\\[proced-mark] to mark a process for later commands. | |
079ba9b7 SM |
582 | Type \\[proced-send-signal] to send signals to marked processes. |
583 | ||
da643190 RW |
584 | The initial content of a listing is defined by the variable `proced-filter' |
585 | and the variable `proced-format'. | |
586 | The variable `proced-filter' specifies which system processes are displayed. | |
587 | The variable `proced-format' specifies which attributes are displayed for | |
588 | each process. Type \\[proced-filter-interactive] and \\[proced-format-interactive] | |
589 | to change the values of `proced-filter' and `proced-format'. | |
590 | The current value of the variable `proced-filter' is indicated in the | |
591 | mode line. | |
592 | ||
593 | The sort order of Proced listings is defined by the variable `proced-sort'. | |
594 | Type \\[proced-sort-interactive] or click on a header in the header line | |
595 | to change the sort scheme. The current sort scheme is indicated in the | |
596 | mode line, using \"+\" or \"-\" for ascending or descending sort order. | |
597 | ||
4ed46aef | 598 | An existing Proced listing can be refined by typing \\[proced-refine]. |
da643190 RW |
599 | Refining an existing listing does not update the variable `proced-filter'. |
600 | ||
601 | The attribute-specific rules for formatting, filtering, sorting, and refining | |
602 | are defined in `proced-grammar-alist'. | |
603 | ||
079ba9b7 SM |
604 | \\{proced-mode-map}" |
605 | (abbrev-mode 0) | |
606 | (auto-fill-mode 0) | |
607 | (setq buffer-read-only t | |
b9df5969 RW |
608 | truncate-lines t |
609 | header-line-format '(:eval (proced-header-line))) | |
610 | (add-hook 'post-command-hook 'force-mode-line-update nil t) | |
079ba9b7 SM |
611 | (set (make-local-variable 'revert-buffer-function) 'proced-revert) |
612 | (set (make-local-variable 'font-lock-defaults) | |
d74d0c42 | 613 | '(proced-font-lock-keywords t nil nil beginning-of-line)) |
413e65fe RW |
614 | (if (and (not proced-auto-update-timer) proced-auto-update-interval) |
615 | (setq proced-auto-update-timer | |
616 | (run-at-time t proced-auto-update-interval | |
617 | 'proced-auto-update-timer)))) | |
216d81a1 | 618 | |
079ba9b7 SM |
619 | ;; Proced mode is suitable only for specially formatted data. |
620 | (put 'proced-mode 'mode-class 'special) | |
621 | ||
622 | ;;;###autoload | |
623 | (defun proced (&optional arg) | |
da643190 | 624 | "Generate a listing of UNIX system processes. |
37e4d8ed RW |
625 | If invoked with optional ARG the window displaying the process |
626 | information will be displayed but not selected. | |
627 | ||
667df88c | 628 | See `proced-mode' for a description of features available in Proced buffers." |
37e4d8ed | 629 | (interactive "P") |
413e65fe RW |
630 | (unless proced-available |
631 | (error "Proced is not available on this system")) | |
92d9ce48 | 632 | (let ((buffer (get-buffer-create "*Proced*")) new) |
61548252 | 633 | (set-buffer buffer) |
37e4d8ed | 634 | (setq new (zerop (buffer-size))) |
61548252 | 635 | (if new (proced-mode)) |
37e4d8ed | 636 | (if (or new arg) |
d74d0c42 | 637 | (proced-update t)) |
37e4d8ed | 638 | (if arg |
61548252 RW |
639 | (display-buffer buffer) |
640 | (pop-to-buffer buffer) | |
008c22f2 JL |
641 | (message |
642 | (substitute-command-keys | |
643 | "Type \\<proced-mode-map>\\[quit-window] to quit, \\[proced-help] for help"))))) | |
37e4d8ed | 644 | |
413e65fe | 645 | (defun proced-auto-update-timer () |
da643190 | 646 | "Auto-update Proced buffers using `run-at-time'." |
d74d0c42 RW |
647 | (dolist (buf (buffer-list)) |
648 | (with-current-buffer buf | |
649 | (if (and (eq major-mode 'proced-mode) | |
413e65fe | 650 | proced-auto-update-flag) |
d74d0c42 RW |
651 | (proced-update t t))))) |
652 | ||
413e65fe | 653 | (defun proced-toggle-auto-update (arg) |
da643190 RW |
654 | "Change whether this Proced buffer is updated automatically. |
655 | With prefix ARG, update this buffer automatically if ARG is positive, | |
413e65fe RW |
656 | otherwise do not update. Sets the variable `proced-auto-update-flag'. |
657 | The time interval for updates is specified via `proced-auto-update-interval'." | |
d74d0c42 | 658 | (interactive (list (or current-prefix-arg 'toggle))) |
413e65fe RW |
659 | (setq proced-auto-update-flag |
660 | (cond ((eq arg 'toggle) (not proced-auto-update-flag)) | |
d74d0c42 | 661 | (arg (> (prefix-numeric-value arg) 0)) |
413e65fe RW |
662 | (t (not proced-auto-update-flag)))) |
663 | (message "Proced auto update %s" | |
664 | (if proced-auto-update-flag "enabled" "disabled"))) | |
92d9ce48 | 665 | |
37e4d8ed RW |
666 | (defun proced-mark (&optional count) |
667 | "Mark the current (or next COUNT) processes." | |
668 | (interactive "p") | |
669 | (proced-do-mark t count)) | |
670 | ||
671 | (defun proced-unmark (&optional count) | |
672 | "Unmark the current (or next COUNT) processes." | |
673 | (interactive "p") | |
674 | (proced-do-mark nil count)) | |
675 | ||
e6854b3f RW |
676 | (defun proced-unmark-backward (&optional count) |
677 | "Unmark the previous (or COUNT previous) processes." | |
61548252 RW |
678 | ;; Analogous to `dired-unmark-backward', |
679 | ;; but `ibuffer-unmark-backward' behaves different. | |
e6854b3f RW |
680 | (interactive "p") |
681 | (proced-do-mark nil (- (or count 1)))) | |
682 | ||
37e4d8ed | 683 | (defun proced-do-mark (mark &optional count) |
9f583d14 | 684 | "Mark the current (or next COUNT) processes using MARK." |
37e4d8ed | 685 | (or count (setq count 1)) |
e6854b3f | 686 | (let ((backward (< count 0)) |
37e4d8ed | 687 | buffer-read-only) |
92d9ce48 RW |
688 | (setq count (1+ (if (<= 0 count) count |
689 | (min (1- (line-number-at-pos)) (abs count))))) | |
690 | (beginning-of-line) | |
691 | (while (not (or (zerop (setq count (1- count))) (eobp))) | |
692 | (proced-insert-mark mark backward)) | |
693 | (proced-move-to-goal-column))) | |
37e4d8ed RW |
694 | |
695 | (defun proced-mark-all () | |
9f583d14 RW |
696 | "Mark all processes. |
697 | If `transient-mark-mode' is turned on and the region is active, | |
698 | mark the region." | |
37e4d8ed RW |
699 | (interactive) |
700 | (proced-do-mark-all t)) | |
701 | ||
702 | (defun proced-unmark-all () | |
9f583d14 RW |
703 | "Unmark all processes. |
704 | If `transient-mark-mode' is turned on and the region is active, | |
705 | unmark the region." | |
37e4d8ed RW |
706 | (interactive) |
707 | (proced-do-mark-all nil)) | |
708 | ||
709 | (defun proced-do-mark-all (mark) | |
9f583d14 RW |
710 | "Mark all processes using MARK. |
711 | If `transient-mark-mode' is turned on and the region is active, | |
712 | mark the region." | |
d74d0c42 | 713 | (let ((count 0) end buffer-read-only) |
e6854b3f | 714 | (save-excursion |
d74d0c42 | 715 | (if (use-region-p) |
9f583d14 RW |
716 | ;; Operate even on those lines that are only partially a part |
717 | ;; of region. This appears most consistent with | |
718 | ;; `proced-move-to-goal-column'. | |
d74d0c42 RW |
719 | (progn (setq end (save-excursion |
720 | (goto-char (region-end)) | |
721 | (unless (looking-at "^") (forward-line)) | |
722 | (point))) | |
723 | (goto-char (region-beginning)) | |
724 | (unless (looking-at "^") (beginning-of-line))) | |
9f583d14 | 725 | (goto-char (point-min)) |
d74d0c42 RW |
726 | (setq end (point-max))) |
727 | (while (< (point) end) | |
728 | (setq count (1+ count)) | |
729 | (proced-insert-mark mark)) | |
730 | (proced-success-message "Marked" count)))) | |
37e4d8ed | 731 | |
e6854b3f RW |
732 | (defun proced-toggle-marks () |
733 | "Toggle marks: marked processes become unmarked, and vice versa." | |
734 | (interactive) | |
735 | (let ((mark-re (proced-marker-regexp)) | |
736 | buffer-read-only) | |
737 | (save-excursion | |
92d9ce48 | 738 | (goto-char (point-min)) |
e6854b3f RW |
739 | (while (not (eobp)) |
740 | (cond ((looking-at mark-re) | |
741 | (proced-insert-mark nil)) | |
742 | ((looking-at " ") | |
743 | (proced-insert-mark t)) | |
744 | (t | |
745 | (forward-line 1))))))) | |
746 | ||
747 | (defun proced-insert-mark (mark &optional backward) | |
748 | "If MARK is non-nil, insert `proced-marker-char'. | |
749 | If BACKWARD is non-nil, move one line backwards before inserting the mark. | |
750 | Otherwise move one line forward after inserting the mark." | |
751 | (if backward (forward-line -1)) | |
37e4d8ed RW |
752 | (insert (if mark proced-marker-char ?\s)) |
753 | (delete-char 1) | |
e6854b3f RW |
754 | (unless backward (forward-line))) |
755 | ||
d74d0c42 RW |
756 | (defun proced-mark-children (ppid &optional omit-ppid) |
757 | "Mark child processes of process PPID. | |
758 | Also mark process PPID unless prefix OMIT-PPID is non-nil." | |
759 | (interactive (list (proced-pid-at-point) current-prefix-arg)) | |
760 | (proced-mark-process-alist | |
761 | (proced-filter-children proced-process-alist ppid omit-ppid))) | |
762 | ||
763 | (defun proced-mark-parents (cpid &optional omit-cpid) | |
764 | "Mark parent processes of process CPID. | |
765 | Also mark CPID unless prefix OMIT-CPID is non-nil." | |
766 | (interactive (list (proced-pid-at-point) current-prefix-arg)) | |
767 | (proced-mark-process-alist | |
768 | (proced-filter-parents proced-process-alist cpid omit-cpid))) | |
769 | ||
770 | (defun proced-mark-process-alist (process-alist &optional quiet) | |
771 | (let ((count 0)) | |
772 | (if process-alist | |
773 | (let (buffer-read-only) | |
774 | (save-excursion | |
775 | (goto-char (point-min)) | |
776 | (while (not (eobp)) | |
777 | (when (assq (proced-pid-at-point) process-alist) | |
778 | (insert proced-marker-char) | |
779 | (delete-char 1) | |
780 | (setq count (1+ count))) | |
781 | (forward-line))))) | |
782 | (unless quiet | |
783 | (proced-success-message "Marked" count)))) | |
784 | ||
e6854b3f RW |
785 | ;; Mostly analog of `dired-do-kill-lines'. |
786 | ;; However, for negative args the target lines of `dired-do-kill-lines' | |
787 | ;; include the current line, whereas `dired-mark' for negative args operates | |
d74d0c42 | 788 | ;; on the preceding lines. Here we are consistent with `dired-mark'. |
9f583d14 RW |
789 | (defun proced-omit-processes (&optional arg quiet) |
790 | "Omit marked processes. | |
791 | With prefix ARG, omit that many lines starting with the current line. | |
792 | \(A negative argument omits backward.) | |
d74d0c42 RW |
793 | If `transient-mark-mode' is turned on and the region is active, |
794 | omit the processes in region. | |
e6854b3f | 795 | If QUIET is non-nil suppress status message. |
9f583d14 | 796 | Returns count of omitted lines." |
e6854b3f RW |
797 | (interactive "P") |
798 | (let ((mark-re (proced-marker-regexp)) | |
799 | (count 0) | |
800 | buffer-read-only) | |
d74d0c42 RW |
801 | (cond ((use-region-p) ;; Omit active region |
802 | (let ((lines (count-lines (region-beginning) (region-end)))) | |
803 | (save-excursion | |
804 | (goto-char (region-beginning)) | |
805 | (while (< count lines) | |
806 | (proced-omit-process) | |
807 | (setq count (1+ count)))))) | |
808 | ((not arg) ;; Omit marked lines | |
809 | (save-excursion | |
810 | (goto-char (point-min)) | |
811 | (while (and (not (eobp)) | |
812 | (re-search-forward mark-re nil t)) | |
813 | (proced-omit-process) | |
814 | (setq count (1+ count))))) | |
815 | ((< 0 arg) ;; Omit forward | |
816 | (while (and (not (eobp)) (< count arg)) | |
817 | (proced-omit-process) | |
818 | (setq count (1+ count)))) | |
819 | ((< arg 0) ;; Omit backward | |
820 | (while (and (not (bobp)) (< count (- arg))) | |
821 | (forward-line -1) | |
822 | (proced-omit-process) | |
823 | (setq count (1+ count))))) | |
92d9ce48 | 824 | (unless (zerop count) (proced-move-to-goal-column)) |
9f583d14 | 825 | (unless quiet (proced-success-message "Omitted" count)) |
e6854b3f | 826 | count)) |
37e4d8ed | 827 | |
d74d0c42 RW |
828 | (defun proced-omit-process () |
829 | "Omit process from listing point is on. | |
830 | Update `proced-process-alist' accordingly." | |
831 | (setq proced-process-alist | |
832 | (assq-delete-all (proced-pid-at-point) proced-process-alist)) | |
833 | (delete-region (line-beginning-position) | |
834 | (save-excursion (forward-line) (point)))) | |
835 | ||
836 | ;;; Filtering | |
837 | ||
838 | (defun proced-filter (process-alist filter-list) | |
da643190 RW |
839 | "Apply FILTER-LIST to PROCESS-ALIST. |
840 | Return the filtered process list." | |
d74d0c42 RW |
841 | (if (symbolp filter-list) |
842 | (setq filter-list (cdr (assq filter-list proced-filter-alist)))) | |
843 | (dolist (filter filter-list) | |
844 | (let (new-alist) | |
845 | (cond ( ;; apply function to entire process list | |
846 | (eq (car filter) 'fun-all) | |
847 | (setq new-alist (funcall (cdr filter) process-alist))) | |
848 | ( ;; apply predicate to each list of attributes | |
849 | (eq (car filter) 'function) | |
850 | (dolist (process process-alist) | |
851 | (if (funcall (car filter) (cdr process)) | |
852 | (push process new-alist)))) | |
853 | (t ;; apply predicate to specified attribute | |
854 | (let ((fun (if (stringp (cdr filter)) | |
855 | `(lambda (val) | |
856 | (string-match ,(cdr filter) val)) | |
857 | (cdr filter))) | |
858 | value) | |
859 | (dolist (process process-alist) | |
860 | (setq value (cdr (assq (car filter) (cdr process)))) | |
861 | (if (and value (funcall fun value)) | |
862 | (push process new-alist)))))) | |
863 | (setq process-alist new-alist))) | |
864 | process-alist) | |
865 | ||
da643190 | 866 | (defun proced-filter-interactive (scheme) |
d74d0c42 RW |
867 | "Filter Proced buffer using SCHEME. |
868 | When called interactively, an empty string means nil, i.e., no filtering. | |
da643190 | 869 | Set variable `proced-filter' to SCHEME. Revert listing." |
37e4d8ed | 870 | (interactive |
d74d0c42 RW |
871 | (let ((scheme (completing-read "Filter: " |
872 | proced-filter-alist nil t))) | |
da643190 | 873 | (list (if (string= "" scheme) nil (intern scheme))))) |
aa5fecb5 RW |
874 | ;; only update if necessary |
875 | (unless (eq proced-filter scheme) | |
876 | (setq proced-filter scheme) | |
877 | (proced-update t))) | |
d74d0c42 RW |
878 | |
879 | (defun proced-process-tree (process-alist) | |
880 | "Return process tree for PROCESS-ALIST. | |
881 | The process tree is an alist with elements (PPID PID1 PID2 ...). | |
882 | PPID is a parent PID. PID1, PID2, ... are the child processes of PPID. | |
883 | The list of children does not include grandchildren." | |
884 | (let (children-list ppid cpids) | |
885 | (dolist (process process-alist children-list) | |
886 | (setq ppid (cdr (assq 'ppid (cdr process)))) | |
887 | (if ppid | |
888 | (setq children-list | |
889 | (if (setq cpids (assq ppid children-list)) | |
890 | (cons (cons ppid (cons (car process) (cdr cpids))) | |
891 | (assq-delete-all ppid children-list)) | |
892 | (cons (list ppid (car process)) | |
893 | children-list))))))) | |
894 | ||
895 | (defun proced-filter-children (process-alist ppid &optional omit-ppid) | |
896 | "For PROCESS-ALIST return list of child processes of PPID. | |
897 | This list includes PPID unless OMIT-PPID is non-nil." | |
898 | (let ((proced-process-tree (proced-process-tree process-alist)) | |
899 | new-alist) | |
900 | (dolist (pid (proced-children-pids ppid)) | |
901 | (push (assq pid process-alist) new-alist)) | |
902 | (if omit-ppid | |
903 | (assq-delete-all ppid new-alist) | |
904 | new-alist))) | |
905 | ||
906 | ;; helper function | |
907 | (defun proced-children-pids (ppid) | |
908 | "Return list of children PIDs of PPID (including PPID)." | |
909 | (let ((cpids (cdr (assq ppid proced-process-tree)))) | |
910 | (if cpids | |
911 | (cons ppid (apply 'append (mapcar 'proced-children-pids cpids))) | |
912 | (list ppid)))) | |
913 | ||
914 | (defun proced-filter-parents (process-alist pid &optional omit-pid) | |
915 | "For PROCESS-ALIST return list of parent processes of PID. | |
916 | This list includes CPID unless OMIT-CPID is non-nil." | |
917 | (let ((parent-list (unless omit-pid (list (assq pid process-alist))))) | |
918 | (while (setq pid (cdr (assq 'ppid (cdr (assq pid process-alist))))) | |
919 | (push (assq pid process-alist) parent-list)) | |
920 | parent-list)) | |
921 | ||
da643190 RW |
922 | ;; Refining |
923 | ||
924 | ;; Filters are used to select the processes in a new listing. | |
925 | ;; Refiners are used to narrow down further (interactively) the processes | |
926 | ;; in an existing listing. | |
927 | ||
928 | (defun proced-refine (&optional event) | |
929 | "Refine Proced listing by comparing with the attribute value at point. | |
930 | Optional EVENT is the location of the Proced field. | |
931 | ||
b4f671ce RW |
932 | Refinement is controlled by the REFINER defined for each attribute ATTR |
933 | in `proced-grammar-alist'. | |
934 | ||
4ed46aef RW |
935 | If REFINER is a list of flags and point is on a process's value of ATTR, |
936 | this command compares the value of ATTR of every process with the value | |
937 | of ATTR of the process at the position of point. | |
da643190 RW |
938 | |
939 | The predicate for the comparison of two ATTR values is defined | |
940 | in `proced-grammar-alist'. For each return value of the predicate | |
b4f671ce RW |
941 | a refine flag is defined in `proced-grammar-alist'. One can select |
942 | processes for which the value of ATTR is \"less than\", \"equal\", | |
943 | and / or \"larger\" than ATTR of the process point is on. A process | |
944 | is included in the new listing if the refine flag for the corresponding | |
945 | return value of the predicate is non-nil. | |
da643190 | 946 | The help-echo string for `proced-refine' uses \"+\" or \"-\" to indicate |
b4f671ce RW |
947 | the current values of these refine flags. |
948 | ||
949 | If REFINER is a cons pair (FUNCTION . HELP-ECHO), FUNCTION is called | |
950 | with one argument, the PID of the process at the position of point. | |
951 | The function must return a list of PIDs that is used for the refined | |
952 | listing. HELP-ECHO is a string that is shown when mouse is over this field. | |
da643190 | 953 | |
b4f671ce RW |
954 | This command refines an already existing process listing generated initially |
955 | based on the value of the variable `proced-filter'. It does not change | |
956 | this variable. It does not revert the listing. If you frequently need | |
957 | a certain refinement, consider defining a new filter in `proced-filter-alist'." | |
d74d0c42 RW |
958 | (interactive (list last-input-event)) |
959 | (if event (posn-set-point (event-end event))) | |
960 | (let ((key (get-text-property (point) 'proced-key)) | |
961 | (pid (get-text-property (point) 'proced-pid))) | |
962 | (if (and key pid) | |
963 | (let* ((grammar (assq key proced-grammar-alist)) | |
b4f671ce RW |
964 | (refiner (nth 7 grammar))) |
965 | (when refiner | |
966 | (cond ((functionp (car refiner)) | |
967 | (setq proced-process-alist (funcall (car refiner) pid))) | |
968 | ((consp refiner) | |
969 | (let ((predicate (nth 4 grammar)) | |
970 | (ref (cdr (assq key (cdr (assq pid proced-process-alist))))) | |
971 | val new-alist) | |
972 | (dolist (process proced-process-alist) | |
973 | (setq val (funcall predicate (cdr (assq key (cdr process))) ref)) | |
974 | (if (cond ((not val) (nth 2 refiner)) | |
975 | ((eq val 'equal) (nth 1 refiner)) | |
976 | (val (car refiner))) | |
977 | (push process new-alist))) | |
978 | (setq proced-process-alist new-alist)))) | |
da643190 | 979 | ;; Do not revert listing. |
d74d0c42 | 980 | (proced-update))) |
da643190 | 981 | (message "No refiner defined here.")))) |
d74d0c42 RW |
982 | |
983 | ;; Proced predicates for sorting and filtering are based on a three-valued | |
984 | ;; logic: | |
da643190 RW |
985 | ;; Predicates take two arguments P1 and P2, the corresponding attribute |
986 | ;; values of two processes. Predicates should return 'equal if P1 has | |
d74d0c42 RW |
987 | ;; same rank like P2. Any other non-nil value says that P1 is "less than" P2, |
988 | ;; or nil if not. | |
989 | ||
990 | (defun proced-< (num1 num2) | |
991 | "Return t if NUM1 less than NUM2. | |
992 | Return `equal' if NUM1 equals NUM2. Return nil if NUM1 greater than NUM2." | |
993 | (if (= num1 num2) | |
994 | 'equal | |
995 | (< num1 num2))) | |
996 | ||
997 | (defun proced-string-lessp (s1 s2) | |
998 | "Return t if string S1 is less than S2 in lexicographic order. | |
999 | Return `equal' if S1 and S2 have identical contents. | |
1000 | Return nil otherwise." | |
1001 | (if (string= s1 s2) | |
1002 | 'equal | |
1003 | (string-lessp s1 s2))) | |
1004 | ||
1005 | (defun proced-time-lessp (t1 t2) | |
1006 | "Return t if time value T1 is less than time value T2. | |
1007 | Return `equal' if T1 equals T2. Return nil otherwise." | |
1008 | (with-decoded-time-value ((high1 low1 micro1 t1) | |
1009 | (high2 low2 micro2 t2)) | |
1010 | (cond ((< high1 high2)) | |
1011 | ((< high2 high1) nil) | |
1012 | ((< low1 low2)) | |
1013 | ((< low2 low1) nil) | |
1014 | ((< micro1 micro2)) | |
1015 | ((< micro2 micro1) nil) | |
1016 | (t 'equal)))) | |
37e4d8ed | 1017 | |
d74d0c42 RW |
1018 | ;;; Sorting |
1019 | ||
1020 | (defsubst proced-xor (b1 b2) | |
1021 | "Return the logical exclusive or of args B1 and B2." | |
1022 | (and (or b1 b2) | |
1023 | (not (and b1 b2)))) | |
1024 | ||
1025 | (defun proced-sort-p (p1 p2) | |
1026 | "Predicate for sorting processes P1 and P2." | |
1027 | (if (not (cdr proced-sort-internal)) | |
1028 | ;; only one predicate: fast scheme | |
1029 | (let* ((sorter (car proced-sort-internal)) | |
1030 | (k1 (cdr (assq (car sorter) (cdr p1)))) | |
1031 | (k2 (cdr (assq (car sorter) (cdr p2))))) | |
1032 | ;; if the attributes are undefined, we should really abort sorting | |
1033 | (if (and k1 k2) | |
1034 | (proced-xor (funcall (nth 1 sorter) k1 k2) | |
1035 | (nth 2 sorter)))) | |
1036 | (let ((sort-list proced-sort-internal) sorter predicate k1 k2) | |
1037 | (catch 'done | |
1038 | (while (setq sorter (pop sort-list)) | |
1039 | (setq k1 (cdr (assq (car sorter) (cdr p1))) | |
1040 | k2 (cdr (assq (car sorter) (cdr p2))) | |
1041 | predicate | |
1042 | (if (and k1 k2) | |
1043 | (funcall (nth 1 sorter) k1 k2))) | |
1044 | (if (not (eq predicate 'equal)) | |
1045 | (throw 'done (proced-xor predicate (nth 2 sorter))))) | |
1046 | (eq t predicate))))) | |
1047 | ||
b4f671ce | 1048 | (defun proced-sort (process-alist sorter descend) |
d74d0c42 | 1049 | "Sort PROCESS-ALIST using scheme SORTER. |
b4f671ce RW |
1050 | SORTER is a scheme like `proced-sort'. |
1051 | DESCEND is non-nil if the first element of SORTER is sorted | |
1052 | in descending order. | |
da643190 | 1053 | Return the sorted process list." |
d74d0c42 RW |
1054 | ;; translate SORTER into a list of lists (KEY PREDICATE REVERSE) |
1055 | (setq proced-sort-internal | |
1056 | (mapcar (lambda (arg) | |
1057 | (let ((grammar (assq arg proced-grammar-alist))) | |
1058 | (list arg (nth 4 grammar) (nth 5 grammar)))) | |
1059 | (cond ((listp sorter) sorter) | |
1060 | ((and (symbolp sorter) | |
1061 | (nth 6 (assq sorter proced-grammar-alist)))) | |
1062 | ((symbolp sorter) (list sorter)) | |
1063 | (t (error "Sorter undefined %s" sorter))))) | |
1064 | (if proced-sort-internal | |
b4f671ce RW |
1065 | (progn |
1066 | ;; splice DESCEND into the list | |
1067 | (setcar proced-sort-internal | |
1068 | (list (caar proced-sort-internal) | |
1069 | (nth 1 (car proced-sort-internal)) descend)) | |
1070 | (sort process-alist 'proced-sort-p)) | |
d74d0c42 RW |
1071 | process-alist)) |
1072 | ||
4ed46aef | 1073 | (defun proced-sort-interactive (scheme &optional arg) |
d74d0c42 RW |
1074 | "Sort Proced buffer using SCHEME. |
1075 | When called interactively, an empty string means nil, i.e., no sorting. | |
da643190 | 1076 | |
4ed46aef RW |
1077 | Prefix ARG controls sort order: |
1078 | - If prefix ARG is positive (negative), sort in ascending (descending) order. | |
1079 | - If ARG is nil or 'no-arg and SCHEME is equal to the previous sorting scheme, | |
1080 | reverse the sorting order. | |
1081 | - If ARG is nil or 'no-arg and SCHEME differs from the previous sorting scheme, | |
1082 | adopt the sorting order defined for SCHEME in `proced-grammar-alist'. | |
b4f671ce | 1083 | |
da643190 RW |
1084 | Set variable `proced-sort' to SCHEME. The current sort scheme is displayed |
1085 | in the mode line, using \"+\" or \"-\" for ascending or descending order." | |
d74d0c42 | 1086 | (interactive |
da643190 | 1087 | (let ((scheme (completing-read "Sort attribute: " |
d74d0c42 RW |
1088 | proced-grammar-alist nil t))) |
1089 | (list (if (string= "" scheme) nil (intern scheme)) | |
4ed46aef RW |
1090 | ;; like 'toggle in `define-derived-mode' |
1091 | (or current-prefix-arg 'no-arg)))) | |
1092 | ||
b4f671ce | 1093 | (setq proced-descend |
4ed46aef RW |
1094 | ;; If `proced-sort-interactive' is called repeatedly for the same |
1095 | ;; sort key, the sort order is reversed. | |
1096 | (cond ((and (eq arg 'no-arg) (equal proced-sort scheme)) | |
1097 | (not proced-descend)) | |
1098 | ((eq arg 'no-arg) | |
1099 | (nth 5 (assq (if (consp scheme) (car scheme) scheme) | |
1100 | proced-grammar-alist))) | |
1101 | (arg (< (prefix-numeric-value arg) 0)) | |
1102 | ((equal proced-sort scheme) | |
1103 | (not proced-descend)) | |
1104 | (t (nth 5 (assq (if (consp scheme) (car scheme) scheme) | |
1105 | proced-grammar-alist)))) | |
b4f671ce | 1106 | proced-sort scheme) |
4ed46aef | 1107 | (proced-update)) |
d74d0c42 | 1108 | |
4ed46aef | 1109 | (defun proced-sort-pcpu (&optional arg) |
b4f671ce | 1110 | "Sort Proced buffer by percentage CPU time (%CPU). |
4ed46aef RW |
1111 | Prefix ARG controls sort order, see `proced-sort-interactive'." |
1112 | (interactive (list (or current-prefix-arg 'no-arg))) | |
1113 | (proced-sort-interactive 'pcpu arg)) | |
d74d0c42 | 1114 | |
4ed46aef | 1115 | (defun proced-sort-pmem (&optional arg) |
b4f671ce | 1116 | "Sort Proced buffer by percentage memory usage (%MEM). |
4ed46aef RW |
1117 | Prefix ARG controls sort order, see `proced-sort-interactive'." |
1118 | (interactive (list (or current-prefix-arg 'no-arg))) | |
1119 | (proced-sort-interactive 'pmem arg)) | |
d74d0c42 | 1120 | |
4ed46aef | 1121 | (defun proced-sort-pid (&optional arg) |
b4f671ce | 1122 | "Sort Proced buffer by PID. |
4ed46aef RW |
1123 | Prefix ARG controls sort order, see `proced-sort-interactive'." |
1124 | (interactive (list (or current-prefix-arg 'no-arg))) | |
1125 | (proced-sort-interactive 'pid arg)) | |
d74d0c42 | 1126 | |
4ed46aef | 1127 | (defun proced-sort-start (&optional arg) |
b4f671ce | 1128 | "Sort Proced buffer by time the command started (START). |
4ed46aef RW |
1129 | Prefix ARG controls sort order, see `proced-sort-interactive'." |
1130 | (interactive (list (or current-prefix-arg 'no-arg))) | |
1131 | (proced-sort-interactive 'start arg)) | |
d74d0c42 | 1132 | |
4ed46aef | 1133 | (defun proced-sort-time (&optional arg) |
b4f671ce | 1134 | "Sort Proced buffer by CPU time (TIME). |
4ed46aef RW |
1135 | Prefix ARG controls sort order, see `proced-sort-interactive'." |
1136 | (interactive (list (or current-prefix-arg 'no-arg))) | |
1137 | (proced-sort-interactive 'time arg)) | |
d74d0c42 | 1138 | |
4ed46aef | 1139 | (defun proced-sort-user (&optional arg) |
b4f671ce | 1140 | "Sort Proced buffer by USER. |
4ed46aef RW |
1141 | Prefix ARG controls sort order, see `proced-sort-interactive'." |
1142 | (interactive (list (or current-prefix-arg 'no-arg))) | |
1143 | (proced-sort-interactive 'user arg)) | |
d74d0c42 | 1144 | |
4ed46aef | 1145 | (defun proced-sort-header (event &optional arg) |
d74d0c42 RW |
1146 | "Sort Proced listing based on an attribute. |
1147 | EVENT is a mouse event with starting position in the header line. | |
da643190 | 1148 | It is converted in the corresponding attribute key. |
b4f671ce | 1149 | This command updates the variable `proced-sort'. |
4ed46aef RW |
1150 | Prefix ARG controls sort order, see `proced-sort-interactive'." |
1151 | (interactive (list last-input-event (or last-prefix-arg 'no-arg))) | |
d74d0c42 RW |
1152 | (let ((start (event-start event)) |
1153 | col key) | |
1154 | (save-selected-window | |
1155 | (select-window (posn-window start)) | |
aa5fecb5 | 1156 | (setq col (+ (1- (car (posn-actual-col-row start))) |
d74d0c42 RW |
1157 | (window-hscroll))) |
1158 | (when (and (<= 0 col) (< col (length proced-header-line))) | |
1159 | (setq key (get-text-property col 'proced-key proced-header-line)) | |
1160 | (if key | |
4ed46aef | 1161 | (proced-sort-interactive key arg) |
d74d0c42 RW |
1162 | (message "No sorter defined here.")))))) |
1163 | ||
1164 | ;;; Formating | |
1165 | ||
1166 | (defun proced-format-time (time) | |
667df88c | 1167 | "Format time interval TIME." |
d74d0c42 RW |
1168 | (let* ((ftime (float-time time)) |
1169 | (days (truncate ftime 86400)) | |
1170 | (ftime (mod ftime 86400)) | |
1171 | (hours (truncate ftime 3600)) | |
1172 | (ftime (mod ftime 3600)) | |
1173 | (minutes (truncate ftime 60)) | |
1174 | (seconds (mod ftime 60))) | |
1175 | (cond ((< 0 days) | |
1176 | (format "%d-%02d:%02d:%02d" days hours minutes seconds)) | |
1177 | ((< 0 hours) | |
1178 | (format "%02d:%02d:%02d" hours minutes seconds)) | |
1179 | (t | |
1180 | (format "%02d:%02d" minutes seconds))))) | |
1181 | ||
1182 | (defun proced-format-start (start) | |
1183 | "Format time START. | |
1184 | The return string is always 6 characters wide." | |
1185 | (let ((d-start (decode-time start)) | |
1186 | (d-current (decode-time))) | |
1187 | (cond ( ;; process started in previous years | |
1188 | (< (nth 5 d-start) (nth 5 d-current)) | |
1189 | (format-time-string " %Y" start)) | |
1190 | ;; process started today | |
1191 | ((and (= (nth 3 d-start) (nth 3 d-current)) | |
1192 | (= (nth 4 d-start) (nth 4 d-current))) | |
1193 | (format-time-string " %H:%M" start)) | |
1194 | (t ;; process started this year | |
1195 | (format-time-string "%b %e" start))))) | |
1196 | ||
1197 | (defun proced-format-ttname (ttname) | |
da643190 | 1198 | "Format attribute TTNAME, omitting path \"/dev/\"." |
d74d0c42 | 1199 | ;; Does this work for all systems? |
da643190 RW |
1200 | (substring ttname (if (string-match "\\`/dev/" ttname) |
1201 | (match-end 0) 0))) | |
1202 | ||
b4f671ce | 1203 | ;; Proced assumes that every process occupies only one line in the listing. |
da643190 RW |
1204 | (defun proced-format-args (args) |
1205 | "Format attribute ARGS. | |
1206 | Replace newline characters by \"^J\" (two characters)." | |
1207 | (replace-regexp-in-string "\n" "^J" args)) | |
d74d0c42 RW |
1208 | |
1209 | (defun proced-format (process-alist format) | |
1210 | "Display PROCESS-ALIST using FORMAT." | |
1211 | (if (symbolp format) | |
1212 | (setq format (cdr (assq format proced-format-alist)))) | |
b4f671ce RW |
1213 | |
1214 | ;; Not all systems give us all attributes. We take `emacs-pid' as a | |
1215 | ;; representative process PID. If FORMAT contains a list of alternative | |
1216 | ;; attributes, we take the first attribute that is non-nil for `emacs-pid'. | |
1217 | ;; If none of the alternatives is non-nil, the attribute is ignored | |
1218 | ;; in the listing. | |
1219 | (let ((standard-attributes | |
1220 | (car (proced-process-attributes (list (emacs-pid))))) | |
1221 | new-format fmi) | |
1222 | (dolist (fmt format) | |
1223 | (if (symbolp fmt) | |
1224 | (if (assq fmt standard-attributes) | |
1225 | (push fmt new-format)) | |
1226 | (while (setq fmi (pop fmt)) | |
1227 | (when (assq fmi standard-attributes) | |
1228 | (push fmi new-format) | |
1229 | (setq fmt nil))))) | |
1230 | (setq format (nreverse new-format))) | |
1231 | ||
d74d0c42 | 1232 | (insert (make-string (length process-alist) ?\n)) |
b4f671ce RW |
1233 | (let ((whitespace " ") (unknown "?") |
1234 | (sort-key (if (consp proced-sort) (car proced-sort) proced-sort)) | |
1235 | header-list grammar) | |
d74d0c42 | 1236 | ;; Loop over all attributes |
b4f671ce | 1237 | (while (setq grammar (assq (pop format) proced-grammar-alist)) |
d74d0c42 | 1238 | (let* ((key (car grammar)) |
da643190 RW |
1239 | (fun (cond ((stringp (nth 2 grammar)) |
1240 | `(lambda (arg) (format ,(nth 2 grammar) arg))) | |
1241 | ((not (nth 2 grammar)) 'identity) | |
1242 | ( t (nth 2 grammar)))) | |
d74d0c42 RW |
1243 | (whitespace (if format whitespace "")) |
1244 | ;; Text properties: | |
1245 | ;; We use the text property `proced-key' to store in each | |
1246 | ;; field the corresponding key. | |
1247 | ;; Of course, the sort predicate appearing in help-echo | |
1248 | ;; is only part of the story. But it gives the main idea. | |
b4f671ce RW |
1249 | (hprops (let ((descend (if (eq key sort-key) proced-descend (nth 5 grammar)))) |
1250 | `(proced-key ,key mouse-face highlight | |
1251 | help-echo ,(format proced-header-help-echo | |
1252 | (if descend "-" "+") | |
1253 | (nth 1 grammar) | |
1254 | (if descend "descending" "ascending"))))) | |
1255 | (refiner (nth 7 grammar)) | |
1256 | (fprops | |
1257 | (cond ((functionp (car refiner)) | |
1258 | `(proced-key ,key mouse-face highlight | |
1259 | help-echo ,(format "mouse-2, RET: %s" | |
1260 | (cdr refiner)))) | |
1261 | ((consp refiner) | |
1262 | `(proced-key ,key mouse-face highlight | |
1263 | help-echo ,(format "mouse-2, RET: refine by attribute %s %s" | |
d74d0c42 RW |
1264 | (nth 1 grammar) |
1265 | (mapconcat (lambda (s) | |
1266 | (if s "+" "-")) | |
b4f671ce | 1267 | refiner "")))))) |
d74d0c42 RW |
1268 | value) |
1269 | ||
da643190 | 1270 | ;; highlight the header of the sort column |
b4f671ce | 1271 | (if (eq key sort-key) |
aa5fecb5 | 1272 | (setq hprops (append '(face proced-sort-header) hprops))) |
d74d0c42 RW |
1273 | (goto-char (point-min)) |
1274 | (cond ( ;; fixed width of output field | |
1275 | (numberp (nth 3 grammar)) | |
1276 | (dolist (process process-alist) | |
1277 | (end-of-line) | |
1278 | (setq value (cdr (assq key (cdr process)))) | |
1279 | (insert (if value | |
1280 | (apply 'propertize (funcall fun value) fprops) | |
b4f671ce RW |
1281 | (format (concat "%" (number-to-string (nth 3 grammar)) "s") |
1282 | unknown)) | |
d74d0c42 RW |
1283 | whitespace) |
1284 | (forward-line)) | |
1285 | (push (format (concat "%" (number-to-string (nth 3 grammar)) "s") | |
1286 | (apply 'propertize (nth 1 grammar) hprops)) | |
1287 | header-list)) | |
1288 | ||
1289 | ( ;; last field left-justified | |
1290 | (and (not format) (eq 'left (nth 3 grammar))) | |
1291 | (dolist (process process-alist) | |
1292 | (end-of-line) | |
1293 | (setq value (cdr (assq key (cdr process)))) | |
b4f671ce RW |
1294 | (insert (if value (apply 'propertize (funcall fun value) fprops) |
1295 | unknown)) | |
d74d0c42 RW |
1296 | (forward-line)) |
1297 | (push (apply 'propertize (nth 1 grammar) hprops) header-list)) | |
1298 | ||
1299 | (t ;; calculated field width | |
1300 | (let ((width (length (nth 1 grammar))) | |
1301 | field-list value) | |
1302 | (dolist (process process-alist) | |
1303 | (setq value (cdr (assq key (cdr process)))) | |
1304 | (if value | |
1305 | (setq value (apply 'propertize (funcall fun value) fprops) | |
1306 | width (max width (length value)) | |
1307 | field-list (cons value field-list)) | |
b4f671ce RW |
1308 | (push unknown field-list) |
1309 | (setq width (max width (length unknown))))) | |
d74d0c42 RW |
1310 | (let ((afmt (concat "%" (if (eq 'left (nth 3 grammar)) "-" "") |
1311 | (number-to-string width) "s"))) | |
1312 | (push (format afmt (apply 'propertize (nth 1 grammar) hprops)) | |
1313 | header-list) | |
1314 | (dolist (value (nreverse field-list)) | |
1315 | (end-of-line) | |
1316 | (insert (format afmt value) whitespace) | |
1317 | (forward-line)))))))) | |
1318 | ||
1319 | ;; final cleanup | |
1320 | (goto-char (point-min)) | |
1321 | (dolist (process process-alist) | |
1322 | ;; We use the text property `proced-pid' to store in each line | |
1323 | ;; the corresponding pid | |
1324 | (put-text-property (point) (line-end-position) 'proced-pid (car process)) | |
1325 | (forward-line)) | |
1326 | ;; Set header line | |
1327 | (setq proced-header-line | |
1328 | (mapconcat 'identity (nreverse header-list) whitespace)) | |
1329 | (if (string-match "[ \t]+$" proced-header-line) | |
1330 | (setq proced-header-line (substring proced-header-line 0 | |
1331 | (match-beginning 0)))) | |
1332 | ;; (delete-trailing-whitespace) | |
1333 | (goto-char (point-min)) | |
1334 | (while (re-search-forward "[ \t\r]+$" nil t) | |
1335 | (delete-region (match-beginning 0) (match-end 0))))) | |
b9df5969 | 1336 | |
d74d0c42 RW |
1337 | (defun proced-format-interactive (scheme &optional revert) |
1338 | "Format Proced buffer using SCHEME. | |
1339 | When called interactively, an empty string means nil, i.e., no formatting. | |
da643190 | 1340 | Set variable `proced-format' to SCHEME. |
d74d0c42 RW |
1341 | With prefix REVERT non-nil revert listing." |
1342 | (interactive | |
1343 | (let ((scheme (completing-read "Format: " | |
1344 | proced-format-alist nil t))) | |
1345 | (list (if (string= "" scheme) nil (intern scheme)) | |
1346 | current-prefix-arg))) | |
aa5fecb5 RW |
1347 | ;; only update if necessary |
1348 | (when (or (not (eq proced-format scheme)) revert) | |
1349 | (setq proced-format scheme) | |
1350 | (proced-update revert))) | |
d74d0c42 RW |
1351 | |
1352 | ;; generate listing | |
1353 | ||
b4f671ce | 1354 | (defun proced-process-attributes (&optional pid-list) |
d74d0c42 | 1355 | "Return alist of attributes for each system process. |
b4f671ce RW |
1356 | This alist can be customized via `proced-custom-attributes'. |
1357 | Optional arg PID-LIST is a list of PIDs of system process that are analyzed. | |
1358 | If no attributes are known for a process (possibly because it already died) | |
1359 | the process is ignored." | |
1360 | ;; Should we make it customizable whether processes with empty attribute | |
1361 | ;; lists are ignored? When would such processes be of interest? | |
1362 | (let (process-alist attributes) | |
1363 | (dolist (pid (or pid-list (list-system-processes)) process-alist) | |
1364 | (when (setq attributes (system-process-attributes pid)) | |
1365 | (let ((utime (cdr (assq 'utime attributes))) | |
1366 | (stime (cdr (assq 'stime attributes))) | |
1367 | (cutime (cdr (assq 'cutime attributes))) | |
1368 | (cstime (cdr (assq 'cstime attributes))) | |
1369 | attr) | |
1370 | (setq attributes | |
1371 | (append (list (cons 'pid pid)) | |
1372 | (if (and utime stime) | |
1373 | (list (cons 'time (time-add utime stime)))) | |
1374 | (if (and cutime cstime) | |
1375 | (list (cons 'ctime (time-add cutime cstime)))) | |
1376 | attributes)) | |
1377 | (dolist (fun proced-custom-attributes) | |
1378 | (if (setq attr (funcall fun attributes)) | |
1379 | (push attr attributes))) | |
1380 | (push (cons pid attributes) process-alist)))))) | |
d74d0c42 RW |
1381 | |
1382 | (defun proced-update (&optional revert quiet) | |
9f583d14 | 1383 | "Update the `proced' process information. Preserves point and marks. |
d74d0c42 | 1384 | With prefix REVERT non-nil, revert listing. |
9f583d14 | 1385 | Suppress status information if QUIET is nil." |
e6854b3f | 1386 | ;; This is the main function that generates and updates the process listing. |
d74d0c42 RW |
1387 | (interactive "P") |
1388 | (setq revert (or revert (not proced-process-alist))) | |
1389 | (or quiet (message (if revert "Updating process information..." | |
1390 | "Updating process display..."))) | |
da643190 RW |
1391 | (if revert ;; evaluate all processes |
1392 | (setq proced-process-alist (proced-process-attributes))) | |
1393 | ;; filtering and sorting | |
1394 | (setq proced-process-alist | |
b4f671ce RW |
1395 | (proced-sort (proced-filter proced-process-alist proced-filter) |
1396 | proced-sort proced-descend)) | |
da643190 RW |
1397 | |
1398 | ;; It is useless to keep undo information if we revert, filter, or | |
1399 | ;; refine the listing so that `proced-process-alist' has changed. | |
1400 | ;; We could keep the undo information if we only re-sort the buffer. | |
1401 | ;; Would that be useful? Re-re-sorting is easy, too. | |
1402 | (if (consp buffer-undo-list) | |
1403 | (setq buffer-undo-list nil)) | |
1404 | (let ((buffer-undo-list t) | |
1405 | ;; If point is on a field, we try to return point to that field. | |
1406 | ;; Otherwise we try to return to the same column | |
1407 | (old-pos (let ((pid (proced-pid-at-point)) | |
1408 | (key (get-text-property (point) 'proced-key))) | |
1409 | (list pid key ; can both be nil | |
d74d0c42 RW |
1410 | (if key |
1411 | (if (get-text-property (1- (point)) 'proced-key) | |
1412 | (- (point) (previous-single-property-change | |
1413 | (point) 'proced-key)) | |
1414 | 0) | |
1415 | (current-column))))) | |
1416 | buffer-read-only mp-list) | |
37e4d8ed | 1417 | ;; remember marked processes (whatever the mark was) |
d74d0c42 RW |
1418 | (goto-char (point-min)) |
1419 | (while (re-search-forward "^\\(\\S-\\)" nil t) | |
1420 | (push (cons (save-match-data (proced-pid-at-point)) | |
92d9ce48 | 1421 | (match-string-no-properties 1)) mp-list)) |
da643190 | 1422 | |
d74d0c42 | 1423 | ;; generate listing |
37e4d8ed | 1424 | (erase-buffer) |
d74d0c42 | 1425 | (proced-format proced-process-alist proced-format) |
37e4d8ed RW |
1426 | (goto-char (point-min)) |
1427 | (while (not (eobp)) | |
1428 | (insert " ") | |
1429 | (forward-line)) | |
d74d0c42 RW |
1430 | (setq proced-header-line (concat " " proced-header-line)) |
1431 | (if revert (set-buffer-modified-p nil)) | |
da643190 | 1432 | |
d74d0c42 RW |
1433 | ;; set `goal-column' |
1434 | (let ((grammar (assq proced-goal-attribute proced-grammar-alist))) | |
1435 | (setq goal-column ;; set to nil if no match | |
1436 | (if (and grammar | |
1437 | (not (zerop (buffer-size))) | |
1438 | (string-match (regexp-quote (nth 1 grammar)) | |
1439 | proced-header-line)) | |
1440 | (if (nth 3 grammar) | |
1441 | (match-beginning 0) | |
1442 | (match-end 0))))) | |
da643190 | 1443 | |
204ebc5b RW |
1444 | ;; Restore process marks and buffer position (if possible). |
1445 | ;; Sometimes this puts point in the middle of the proced buffer | |
da643190 | 1446 | ;; where it is not interesting. Is there a better / more flexible solution? |
92d9ce48 | 1447 | (goto-char (point-min)) |
da643190 RW |
1448 | (let (pid mark new-pos) |
1449 | (if (or mp-list (car old-pos)) | |
d74d0c42 RW |
1450 | (while (not (eobp)) |
1451 | (setq pid (proced-pid-at-point)) | |
1452 | (when (setq mark (assq pid mp-list)) | |
1453 | (insert (cdr mark)) | |
1454 | (delete-char 1) | |
1455 | (beginning-of-line)) | |
1456 | (when (eq (car old-pos) pid) | |
1457 | (if (nth 1 old-pos) | |
1458 | (let ((limit (line-end-position)) pos) | |
1459 | (while (and (not new-pos) | |
1460 | (setq pos (next-property-change (point) nil limit))) | |
1461 | (goto-char pos) | |
1462 | (when (eq (nth 1 old-pos) | |
1463 | (get-text-property (point) 'proced-key)) | |
1464 | (forward-char (min (nth 2 old-pos) | |
1465 | (- (next-property-change (point)) | |
1466 | (point)))) | |
1467 | (setq new-pos (point)))) | |
1468 | (unless new-pos | |
da643190 RW |
1469 | ;; we found the process, but the field of point |
1470 | ;; is not listed anymore | |
1471 | (setq new-pos (proced-move-to-goal-column)))) | |
d74d0c42 RW |
1472 | (setq new-pos (min (+ (line-beginning-position) (nth 2 old-pos)) |
1473 | (line-end-position))))) | |
da643190 RW |
1474 | (forward-line))) |
1475 | (if new-pos | |
1476 | (goto-char new-pos) | |
1477 | (goto-char (point-min)) | |
1478 | (proced-move-to-goal-column))) | |
61548252 | 1479 | ;; update modeline |
da643190 RW |
1480 | ;; Does the long `mode-name' clutter the modeline? It would be nice |
1481 | ;; to have some other location for displaying the values of the various | |
1482 | ;; flags that affect the behavior of proced (flags one might want | |
1483 | ;; to change on the fly). Where?? | |
d74d0c42 RW |
1484 | (setq mode-name |
1485 | (concat "Proced" | |
1486 | (if proced-filter | |
1487 | (concat ": " (symbol-name proced-filter)) | |
1488 | "") | |
1489 | (if proced-sort | |
b4f671ce | 1490 | (let* ((key (if (consp proced-sort) (car proced-sort) |
d74d0c42 RW |
1491 | proced-sort)) |
1492 | (grammar (assq key proced-grammar-alist))) | |
b4f671ce | 1493 | (concat " by " (if proced-descend "-" "+") |
d74d0c42 RW |
1494 | (nth 1 grammar))) |
1495 | ""))) | |
61548252 RW |
1496 | (force-mode-line-update) |
1497 | ;; done | |
37e4d8ed | 1498 | (or quiet (input-pending-p) |
d74d0c42 RW |
1499 | (message (if revert "Updating process information...done." |
1500 | "Updating process display...done."))))) | |
37e4d8ed RW |
1501 | |
1502 | (defun proced-revert (&rest args) | |
4ed46aef RW |
1503 | "Reevaluate the process listing based on the currently running processes. |
1504 | Preserves point and marks." | |
d74d0c42 | 1505 | (proced-update t)) |
37e4d8ed | 1506 | |
e6854b3f | 1507 | ;; I do not want to reinvent the wheel. Should we rename `dired-pop-to-buffer' |
92d9ce48 RW |
1508 | ;; and move it to window.el so that proced and ibuffer can easily use it, too? |
1509 | ;; What about functions like `appt-disp-window' that use | |
1510 | ;; `shrink-window-if-larger-than-buffer'? | |
37e4d8ed RW |
1511 | (autoload 'dired-pop-to-buffer "dired") |
1512 | ||
1513 | (defun proced-send-signal (&optional signal) | |
1514 | "Send a SIGNAL to the marked processes. | |
9f583d14 | 1515 | If no process is marked, operate on current process. |
37e4d8ed RW |
1516 | SIGNAL may be a string (HUP, INT, TERM, etc.) or a number. |
1517 | If SIGNAL is nil display marked processes and query interactively for SIGNAL." | |
1518 | (interactive) | |
d74d0c42 RW |
1519 | (let ((regexp (proced-marker-regexp)) |
1520 | process-alist) | |
37e4d8ed RW |
1521 | ;; collect marked processes |
1522 | (save-excursion | |
1523 | (goto-char (point-min)) | |
1524 | (while (re-search-forward regexp nil t) | |
d74d0c42 RW |
1525 | (push (cons (proced-pid-at-point) |
1526 | ;; How much info should we collect here? | |
37e4d8ed | 1527 | (substring (match-string-no-properties 0) 2)) |
d74d0c42 RW |
1528 | process-alist))) |
1529 | (setq process-alist | |
1530 | (if process-alist | |
1531 | (nreverse process-alist) | |
9f583d14 | 1532 | ;; take current process |
d74d0c42 RW |
1533 | (list (cons (proced-pid-at-point) |
1534 | (buffer-substring-no-properties | |
1535 | (+ 2 (line-beginning-position)) | |
1536 | (line-end-position)))))) | |
9f583d14 RW |
1537 | (unless signal |
1538 | ;; Display marked processes (code taken from `dired-mark-pop-up'). | |
1539 | (let ((bufname " *Marked Processes*") | |
d74d0c42 | 1540 | (header-line (substring-no-properties proced-header-line))) |
9f583d14 RW |
1541 | (with-current-buffer (get-buffer-create bufname) |
1542 | (setq truncate-lines t | |
d74d0c42 | 1543 | proced-header-line header-line ; inherit header line |
9f583d14 RW |
1544 | header-line-format '(:eval (proced-header-line))) |
1545 | (add-hook 'post-command-hook 'force-mode-line-update nil t) | |
1546 | (erase-buffer) | |
d74d0c42 | 1547 | (dolist (process process-alist) |
9f583d14 RW |
1548 | (insert " " (cdr process) "\n")) |
1549 | (save-window-excursion | |
1550 | (dired-pop-to-buffer bufname) ; all we need | |
1551 | (let* ((completion-ignore-case t) | |
d74d0c42 | 1552 | (pnum (if (= 1 (length process-alist)) |
9f583d14 | 1553 | "1 process" |
d74d0c42 RW |
1554 | (format "%d processes" (length process-alist)))) |
1555 | ;; The following is an ugly hack. Is there a better way | |
9f583d14 RW |
1556 | ;; to help people like me to remember the signals and |
1557 | ;; their meanings? | |
1558 | (tmp (completing-read (concat "Send signal [" pnum | |
1559 | "] (default TERM): ") | |
1560 | proced-signal-list | |
1561 | nil nil nil nil "TERM"))) | |
1562 | (setq signal (if (string-match "^\\(\\S-+\\)\\s-" tmp) | |
1563 | (match-string 1 tmp) tmp)))))) | |
1564 | ;; send signal | |
1565 | (let ((count 0) | |
1566 | failures) | |
1567 | ;; Why not always use `signal-process'? See | |
1568 | ;; http://lists.gnu.org/archive/html/emacs-devel/2008-03/msg02955.html | |
1569 | (if (functionp proced-signal-function) | |
1570 | ;; use built-in `signal-process' | |
1571 | (let ((signal (if (stringp signal) | |
1572 | (if (string-match "\\`[0-9]+\\'" signal) | |
1573 | (string-to-number signal) | |
1574 | (make-symbol signal)) | |
d74d0c42 RW |
1575 | signal))) ; number |
1576 | (dolist (process process-alist) | |
9f583d14 RW |
1577 | (condition-case err |
1578 | (if (zerop (funcall | |
d74d0c42 | 1579 | proced-signal-function (car process) signal)) |
9f583d14 RW |
1580 | (setq count (1+ count)) |
1581 | (proced-log "%s\n" (cdr process)) | |
1582 | (push (cdr process) failures)) | |
1583 | (error ;; catch errors from failed signals | |
1584 | (proced-log "%s\n" err) | |
1585 | (proced-log "%s\n" (cdr process)) | |
1586 | (push (cdr process) failures))))) | |
1587 | ;; use external system call | |
1588 | (let ((signal (concat "-" (if (numberp signal) | |
1589 | (number-to-string signal) signal)))) | |
d74d0c42 | 1590 | (dolist (process process-alist) |
9f583d14 RW |
1591 | (with-temp-buffer |
1592 | (condition-case err | |
1593 | (if (zerop (call-process | |
1594 | proced-signal-function nil t nil | |
d74d0c42 | 1595 | signal (number-to-string (car process)))) |
9f583d14 RW |
1596 | (setq count (1+ count)) |
1597 | (proced-log (current-buffer)) | |
1598 | (proced-log "%s\n" (cdr process)) | |
1599 | (push (cdr process) failures)) | |
1600 | (error ;; catch errors from failed signals | |
1601 | (proced-log (current-buffer)) | |
1602 | (proced-log "%s\n" (cdr process)) | |
1603 | (push (cdr process) failures))))))) | |
1604 | (if failures | |
d74d0c42 RW |
1605 | ;; Proced error message are not always very precise. |
1606 | ;; Can we issue a useful one-line summary in the | |
1607 | ;; message area (using FAILURES) if only one signal failed? | |
9f583d14 RW |
1608 | (proced-log-summary |
1609 | signal | |
1610 | (format "%d of %d signal%s failed" | |
d74d0c42 RW |
1611 | (length failures) (length process-alist) |
1612 | (if (= 1 (length process-alist)) "" "s"))) | |
9f583d14 RW |
1613 | (proced-success-message "Sent signal to" count))) |
1614 | ;; final clean-up | |
1615 | (run-hooks 'proced-after-send-signal-hook)))) | |
1616 | ||
d74d0c42 | 1617 | ;; similar to `dired-why' |
9f583d14 RW |
1618 | (defun proced-why () |
1619 | "Pop up a buffer with error log output from Proced. | |
1620 | A group of errors from a single command ends with a formfeed. | |
1621 | Thus, use \\[backward-page] to find the beginning of a group of errors." | |
1622 | (interactive) | |
1623 | (if (get-buffer proced-log-buffer) | |
d74d0c42 RW |
1624 | (save-selected-window |
1625 | ;; move `proced-log-buffer' to the front of the buffer list | |
1626 | (select-window (display-buffer (get-buffer proced-log-buffer))) | |
1627 | (setq truncate-lines t) | |
1628 | (set-buffer-modified-p nil) | |
1629 | (setq buffer-read-only t) | |
1630 | (goto-char (point-max)) | |
1631 | (forward-line -1) | |
1632 | (backward-page 1) | |
1633 | (recenter 0)))) | |
9f583d14 RW |
1634 | |
1635 | ;; similar to `dired-log' | |
1636 | (defun proced-log (log &rest args) | |
1637 | "Log a message or the contents of a buffer. | |
1638 | If LOG is a string and there are more args, it is formatted with | |
1639 | those ARGS. Usually the LOG string ends with a \\n. | |
1640 | End each bunch of errors with (proced-log t signal): | |
1641 | this inserts the current time, buffer and signal at the start of the page, | |
1642 | and \f (formfeed) at the end." | |
1643 | (let ((obuf (current-buffer))) | |
1644 | (with-current-buffer (get-buffer-create proced-log-buffer) | |
1645 | (goto-char (point-max)) | |
d74d0c42 | 1646 | (let (buffer-read-only) |
9f583d14 RW |
1647 | (cond ((stringp log) |
1648 | (insert (if args | |
1649 | (apply 'format log args) | |
1650 | log))) | |
1651 | ((bufferp log) | |
1652 | (insert-buffer-substring log)) | |
1653 | ((eq t log) | |
1654 | (backward-page 1) | |
1655 | (unless (bolp) | |
1656 | (insert "\n")) | |
1657 | (insert (current-time-string) | |
1658 | "\tBuffer `" (buffer-name obuf) "', " | |
1659 | (format "signal `%s'\n" (car args))) | |
1660 | (goto-char (point-max)) | |
1661 | (insert "\f\n"))))))) | |
1662 | ||
1663 | ;; similar to `dired-log-summary' | |
1664 | (defun proced-log-summary (signal string) | |
1665 | "State a summary of SIGNAL's failures, in echo area and log buffer. | |
1666 | STRING is an overall summary of the failures." | |
1667 | (message "Signal %s: %s--type ? for details" signal string) | |
1668 | ;; Log a summary describing a bunch of errors. | |
1669 | (proced-log (concat "\n" string "\n")) | |
1670 | (proced-log t signal)) | |
37e4d8ed RW |
1671 | |
1672 | (defun proced-help () | |
1673 | "Provide help for the `proced' user." | |
1674 | (interactive) | |
9f583d14 | 1675 | (proced-why) |
37e4d8ed RW |
1676 | (if (eq last-command 'proced-help) |
1677 | (describe-mode) | |
1678 | (message proced-help-string))) | |
1679 | ||
1680 | (defun proced-undo () | |
1681 | "Undo in a proced buffer. | |
1682 | This doesn't recover killed processes, it just undoes changes in the proced | |
1683 | buffer. You can use it to recover marks." | |
1684 | (interactive) | |
1685 | (let (buffer-read-only) | |
1686 | (undo)) | |
92d9ce48 | 1687 | (message "Change in Proced buffer undone. |
37e4d8ed RW |
1688 | Killed processes cannot be recovered by Emacs.")) |
1689 | ||
1690 | (provide 'proced) | |
1691 | ||
dfab9988 | 1692 | ;; arch-tag: a6e312ad-9032-45aa-972d-31a8cfc545af |
9f583d14 | 1693 | ;;; proced.el ends here |