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e6854b3f | 1 | ;;; proced.el --- operate on system processes like dired |
37e4d8ed | 2 | |
73b0cd50 | 3 | ;; Copyright (C) 2008-2011 Free Software Foundation, Inc. |
1ba1a8b9 | 4 | |
1e05f387 | 5 | ;; Author: Roland Winkler <winkler@gnu.org> |
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 | 33 | ;; |
413e65fe | 34 | ;; Thoughts and Ideas |
a20878b6 | 35 | ;; - Currently, `process-attributes' returns the list of |
413e65fe RW |
36 | ;; command-line arguments of a process as one concatenated string. |
37 | ;; This format is compatible with `shell-command'. Also, under | |
38 | ;; MS-Windows, the command-line arguments are actually stored as a | |
39 | ;; single string, so that it is impossible to reverse-engineer it back | |
a20878b6 | 40 | ;; into separate arguments. Alternatively, `process-attributes' |
413e65fe RW |
41 | ;; could (try to) return a list of strings that correspond to individual |
42 | ;; command-line arguments. Then one could feed such a list of | |
43 | ;; command-line arguments into `call-process' or `start-process'. | |
44 | ;; Are there real-world applications when such a feature would be useful? | |
45 | ;; What about something like `proced-restart-pid'? | |
37e4d8ed RW |
46 | |
47 | ;;; Code: | |
48 | ||
d74d0c42 RW |
49 | (require 'time-date) ; for `with-decoded-time-value' |
50 | ||
37e4d8ed RW |
51 | (defgroup proced nil |
52 | "Proced mode." | |
53 | :group 'processes | |
54 | :group 'unix | |
55 | :prefix "proced-") | |
56 | ||
e6854b3f RW |
57 | (defcustom proced-signal-function 'signal-process |
58 | "Name of signal function. | |
59 | It can be an elisp function (usually `signal-process') or a string specifying | |
60 | the external command (usually \"kill\")." | |
37e4d8ed | 61 | :group 'proced |
e6854b3f RW |
62 | :type '(choice (function :tag "function") |
63 | (string :tag "command"))) | |
37e4d8ed RW |
64 | |
65 | (defcustom proced-signal-list | |
d74d0c42 | 66 | '( ;; signals supported on all POSIX compliant systems |
9a9af856 SM |
67 | ("HUP" . " (1. Hangup)") |
68 | ("INT" . " (2. Terminal interrupt)") | |
69 | ("QUIT" . " (3. Terminal quit)") | |
70 | ("ABRT" . " (6. Process abort)") | |
71 | ("KILL" . " (9. Kill - cannot be caught or ignored)") | |
72 | ("ALRM" . " (14. Alarm Clock)") | |
73 | ("TERM" . " (15. Termination)") | |
9f583d14 RW |
74 | ;; POSIX 1003.1-2001 |
75 | ;; Which systems do not support these signals so that we can | |
76 | ;; exclude them from `proced-signal-list'? | |
9a9af856 SM |
77 | ("CONT" . " (Continue executing)") |
78 | ("STOP" . " (Stop executing / pause - cannot be caught or ignored)") | |
79 | ("TSTP" . " (Terminal stop / pause)")) | |
37e4d8ed RW |
80 | "List of signals, used for minibuffer completion." |
81 | :group 'proced | |
9a9af856 SM |
82 | :type '(repeat (cons (string :tag "signal name") |
83 | (string :tag "description")))) | |
37e4d8ed | 84 | |
d74d0c42 RW |
85 | ;; For which attributes can we use a fixed width of the output field? |
86 | ;; A fixed width speeds up formatting, yet it can make | |
87 | ;; `proced-grammar-alist' system-dependent. | |
88 | ;; (If proced runs like top(1) we want it to be fast.) | |
89 | ;; | |
90 | ;; If it is impossible / unlikely that an attribute has the same value | |
91 | ;; for two processes, then sorting can be based on one ordinary (fast) | |
92 | ;; predicate like `<'. Otherwise, a list of proced predicates can be used | |
93 | ;; to refine the sort. | |
94 | ;; | |
95 | ;; It would be neat if one could temporarily override the following | |
96 | ;; predefined rules. | |
204ebc5b | 97 | (defcustom proced-grammar-alist |
a20878b6 | 98 | '( ;; attributes defined in `process-attributes' |
d74d0c42 | 99 | (euid "EUID" "%d" right proced-< nil (euid pid) (nil t nil)) |
9a9af856 | 100 | (user "User" nil left proced-string-lessp nil (user pid) (nil t nil)) |
d74d0c42 | 101 | (egid "EGID" "%d" right proced-< nil (egid euid pid) (nil t nil)) |
9a9af856 SM |
102 | (group "Group" nil left proced-string-lessp nil (group user pid) (nil t nil)) |
103 | (comm "Command" nil left proced-string-lessp nil (comm pid) (nil t nil)) | |
104 | (state "Stat" nil left proced-string-lessp nil (state pid) (nil t nil)) | |
b4f671ce | 105 | (ppid "PPID" "%d" right proced-< nil (ppid pid) |
3ac09bb4 | 106 | ((lambda (ppid) (proced-filter-parents proced-process-alist ppid)) |
b4f671ce | 107 | "refine to process parents")) |
9a9af856 SM |
108 | (pgrp "PGrp" "%d" right proced-< nil (pgrp euid pid) (nil t nil)) |
109 | (sess "Sess" "%d" right proced-< nil (sess pid) (nil t nil)) | |
d74d0c42 RW |
110 | (ttname "TTY" proced-format-ttname left proced-string-lessp nil (ttname pid) (nil t nil)) |
111 | (tpgid "TPGID" "%d" right proced-< nil (tpgid pid) (nil t nil)) | |
9a9af856 SM |
112 | (minflt "MinFlt" "%d" right proced-< nil (minflt pid) (nil t t)) |
113 | (majflt "MajFlt" "%d" right proced-< nil (majflt pid) (nil t t)) | |
114 | (cminflt "CMinFlt" "%d" right proced-< nil (cminflt pid) (nil t t)) | |
115 | (cmajflt "CMajFlt" "%d" right proced-< nil (cmajflt pid) (nil t t)) | |
116 | (utime "UTime" proced-format-time right proced-time-lessp t (utime pid) (nil t t)) | |
117 | (stime "STime" proced-format-time right proced-time-lessp t (stime pid) (nil t t)) | |
118 | (time "Time" proced-format-time right proced-time-lessp t (time pid) (nil t t)) | |
119 | (cutime "CUTime" proced-format-time right proced-time-lessp t (cutime pid) (nil t t)) | |
120 | (cstime "CSTime" proced-format-time right proced-time-lessp t (cstime pid) (nil t t)) | |
121 | (ctime "CTime" proced-format-time right proced-time-lessp t (ctime 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)) | |
d74d0c42 | 127 | (rss "RSS" "%d" right proced-< t (rss pid) (nil t t)) |
9a9af856 | 128 | (etime "ETime" proced-format-time right proced-time-lessp t (etime pid) (nil t t)) |
d74d0c42 | 129 | (pcpu "%CPU" "%.1f" right proced-< t (pcpu pid) (nil t t)) |
9a9af856 SM |
130 | (pmem "%Mem" "%.1f" right proced-< t (pmem pid) (nil t t)) |
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 | 134 | (pid "PID" "%d" right proced-< nil (pid) |
3ac09bb4 | 135 | ((lambda (ppid) (proced-filter-children proced-process-alist ppid)) |
b4f671ce | 136 | "refine to process children")) |
f1d27653 | 137 | ;; process tree |
9a9af856 | 138 | (tree "Tree" proced-format-tree left nil nil nil nil)) |
d74d0c42 RW |
139 | "Alist of rules for handling Proced attributes. |
140 | ||
141 | Each element has the form | |
142 | ||
b4f671ce | 143 | (KEY NAME FORMAT JUSTIFY PREDICATE REVERSE SORT-SCHEME REFINER). |
d74d0c42 | 144 | |
204ebc5b | 145 | Symbol KEY is the car of a process attribute. |
d74d0c42 | 146 | |
204ebc5b | 147 | String NAME appears in the header line. |
d74d0c42 | 148 | |
d0482e4e JB |
149 | FORMAT specifies the format for displaying the attribute values. It can |
150 | be a string passed to `format'. It can be a function called with one | |
151 | argument, the value of the attribute. The value nil means take as is. | |
d74d0c42 RW |
152 | |
153 | If JUSTIFY is an integer, its modulus gives the width of the attribute | |
da643190 | 154 | values formatted with FORMAT. If JUSTIFY is positive, NAME appears |
d74d0c42 RW |
155 | right-justified, otherwise it appears left-justified. If JUSTIFY is 'left |
156 | or 'right, the field width is calculated from all field values in the listing. | |
157 | If JUSTIFY is 'left, the field values are formatted left-justified and | |
158 | right-justified otherwise. | |
159 | ||
160 | PREDICATE is the predicate for sorting and filtering the process listing | |
161 | based on attribute KEY. PREDICATE takes two arguments P1 and P2, | |
162 | the corresponding attribute values of two processes. PREDICATE should | |
163 | return 'equal if P1 has same rank like P2. Any other non-nil value says | |
164 | that P1 is \"less than\" P2, or nil if not. | |
f1d27653 | 165 | If PREDICATE is nil the attribute cannot be sorted. |
d74d0c42 | 166 | |
b4f671ce RW |
167 | PREDICATE defines an ascending sort order. REVERSE is non-nil if the sort |
168 | order is descending. | |
d74d0c42 | 169 | |
da643190 | 170 | SORT-SCHEME is a list (KEY1 KEY2 ...) defining a hierarchy of rules |
d74d0c42 RW |
171 | for sorting the process listing. KEY1, KEY2, ... are KEYs appearing as cars |
172 | of `proced-grammar-alist'. First the PREDICATE of KEY1 is evaluated. | |
da643190 | 173 | If it yields non-equal, it defines the sort order for the corresponding |
d74d0c42 RW |
174 | processes. If it evaluates to 'equal the PREDICATE of KEY2 is evaluated, etc. |
175 | ||
b4f671ce | 176 | REFINER can be a list of flags (LESS-B EQUAL-B LARGER-B) used by the command |
da643190 RW |
177 | `proced-refine' (see there) to refine the listing based on attribute KEY. |
178 | This command compares the value of attribute KEY of every process with | |
179 | the value of attribute KEY of the process at the position of point | |
180 | using PREDICATE. | |
d74d0c42 RW |
181 | If PREDICATE yields non-nil, the process is accepted if LESS-B is non-nil. |
182 | If PREDICATE yields 'equal, the process is accepted if EQUAL-B is non-nil. | |
b4f671ce RW |
183 | If PREDICATE yields nil, the process is accepted if LARGER-B is non-nil. |
184 | ||
3ac09bb4 | 185 | REFINER can also be a list (FUNCTION HELP-ECHO). |
b4f671ce RW |
186 | FUNCTION is called with one argument, the PID of the process at the position |
187 | of point. The function must return a list of PIDs that is used for the refined | |
188 | listing. HELP-ECHO is a string that is shown when mouse is over this field. | |
189 | ||
190 | If REFINER is nil no refinement is done." | |
204ebc5b RW |
191 | :group 'proced |
192 | :type '(repeat (list :tag "Attribute" | |
193 | (symbol :tag "Key") | |
194 | (string :tag "Header") | |
195 | (choice :tag "Format" | |
196 | (const :tag "None" nil) | |
197 | (string :tag "Format String") | |
198 | (function :tag "Formatting Function")) | |
199 | (choice :tag "Justification" | |
200 | (const :tag "left" left) | |
201 | (const :tag "right" right) | |
202 | (integer :tag "width")) | |
f1d27653 RW |
203 | (choice :tag "Predicate" |
204 | (const :tag "None" nil) | |
205 | (function :tag "Function")) | |
b4f671ce | 206 | (boolean :tag "Descending Sort Order") |
204ebc5b | 207 | (repeat :tag "Sort Scheme" (symbol :tag "Key")) |
b4f671ce | 208 | (choice :tag "Refiner" |
f1d27653 | 209 | (const :tag "None" nil) |
3ac09bb4 RW |
210 | (list (function :tag "Refinement Function") |
211 | (string :tag "Help echo")) | |
b4f671ce RW |
212 | (list :tag "Refine Flags" |
213 | (boolean :tag "Less") | |
214 | (boolean :tag "Equal") | |
3ac09bb4 | 215 | (boolean :tag "Larger")))))) |
204ebc5b RW |
216 | |
217 | (defcustom proced-custom-attributes nil | |
d74d0c42 RW |
218 | "List of functions defining custom attributes. |
219 | This variable extends the functionality of `proced-process-attributes'. | |
220 | Each function is called with one argument, the list of attributes | |
221 | of a system process. It returns a cons cell of the form (KEY . VALUE) | |
a20878b6 | 222 | like `process-attributes'. This cons cell is appended to the list |
204ebc5b RW |
223 | returned by `proced-process-attributes'. |
224 | If the function returns nil, the value is ignored." | |
225 | :group 'proced | |
226 | :type '(repeat (function :tag "Attribute"))) | |
d74d0c42 RW |
227 | |
228 | ;; Formatting and sorting rules are defined "per attribute". If formatting | |
229 | ;; and / or sorting should use more than one attribute, it appears more | |
230 | ;; transparent to define a new derived attribute, so that formatting and | |
231 | ;; sorting can use them consistently. (Are there exceptions to this rule? | |
232 | ;; Would it be advantageous to have yet more general methods available?) | |
233 | ;; Sorting can also be based on attributes that are invisible in the listing. | |
234 | ||
204ebc5b | 235 | (defcustom proced-format-alist |
f1d27653 RW |
236 | '((short user pid tree pcpu pmem start time (args comm)) |
237 | (medium user pid tree pcpu pmem vsize rss ttname state start time (args comm)) | |
238 | (long user euid group pid tree pri nice pcpu pmem vsize rss ttname state | |
b4f671ce | 239 | start time (args comm)) |
f1d27653 | 240 | (verbose user euid group egid pid ppid tree pgrp sess pri nice pcpu pmem |
d74d0c42 | 241 | state thcount vsize rss ttname tpgid minflt majflt cminflt cmajflt |
b4f671ce | 242 | start time utime stime ctime cutime cstime etime (args comm))) |
d74d0c42 RW |
243 | "Alist of formats of listing. |
244 | The car of each element is a symbol, the name of the format. | |
b4f671ce RW |
245 | The cdr is a list of attribute keys appearing in `proced-grammar-alist'. |
246 | An element of this list may also be a list of attribute keys that specifies | |
247 | alternatives. If the first attribute is absent for a process, use the second | |
248 | one, etc." | |
204ebc5b RW |
249 | :group 'proced |
250 | :type '(alist :key-type (symbol :tag "Format Name") | |
b4f671ce RW |
251 | :value-type (repeat :tag "Keys" |
252 | (choice (symbol :tag "") | |
253 | (repeat :tag "Alternative Keys" | |
254 | (symbol :tag "")))))) | |
d74d0c42 | 255 | |
204ebc5b | 256 | (defcustom proced-format 'short |
d74d0c42 RW |
257 | "Current format of Proced listing. |
258 | It can be the car of an element of `proced-format-alist'. | |
204ebc5b RW |
259 | It can also be a list of keys appearing in `proced-grammar-alist'." |
260 | :group 'proced | |
261 | :type '(choice (symbol :tag "Format Name") | |
262 | (repeat :tag "Keys" (symbol :tag "")))) | |
d74d0c42 RW |
263 | (make-variable-buffer-local 'proced-format) |
264 | ||
265 | ;; FIXME: is there a better name for filter `user' that does not coincide | |
266 | ;; with an attribute key? | |
204ebc5b | 267 | (defcustom proced-filter-alist |
0d4dc442 RW |
268 | `((user (user . ,(concat "\\`" (regexp-quote (user-real-login-name)) "\\'"))) |
269 | (user-running (user . ,(concat "\\`" (regexp-quote (user-real-login-name)) "\\'")) | |
d74d0c42 RW |
270 | (state . "\\`[Rr]\\'")) |
271 | (all) | |
272 | (all-running (state . "\\`[Rr]\\'")) | |
273 | (emacs (fun-all . (lambda (list) | |
274 | (proced-filter-children list ,(emacs-pid)))))) | |
275 | "Alist of process filters. | |
276 | The car of each element is a symbol, the name of the filter. | |
277 | The cdr is a list of elementary filters that are applied to every process. | |
278 | A process is displayed if it passes all elementary filters of a selected | |
279 | filter. | |
280 | ||
281 | An elementary filter can be one of the following: | |
282 | \(KEY . REGEXP) If value of attribute KEY matches REGEXP, | |
283 | accept this process. | |
284 | \(KEY . FUN) Apply function FUN to attribute KEY. Accept this process, | |
285 | if FUN returns non-nil. | |
286 | \(function . FUN) For each process, apply function FUN to list of attributes | |
287 | of each. Accept the process if FUN returns non-nil. | |
288 | \(fun-all . FUN) Apply function FUN to entire process list. | |
204ebc5b RW |
289 | FUN must return the filtered list." |
290 | :group 'proced | |
291 | :type '(repeat (cons :tag "Filter" | |
292 | (symbol :tag "Filter Name") | |
293 | (repeat :tag "Filters" | |
294 | (choice (cons :tag "Key . Regexp" (symbol :tag "Key") regexp) | |
295 | (cons :tag "Key . Function" (symbol :tag "Key") function) | |
296 | (cons :tag "Function" (const :tag "Key: function" function) function) | |
297 | (cons :tag "Fun-all" (const :tag "Key: fun-all" fun-all) function)))))) | |
298 | ||
299 | (defcustom proced-filter 'user | |
d74d0c42 RW |
300 | "Current filter of proced listing. |
301 | It can be the car of an element of `proced-filter-alist'. | |
302 | It can also be a list of elementary filters as in the cdrs of the elements | |
204ebc5b RW |
303 | of `proced-filter-alist'." |
304 | :group 'proced | |
305 | :type '(choice (symbol :tag "Filter Name") | |
306 | (repeat :tag "Filters" | |
307 | (choice (cons :tag "Key . Regexp" (symbol :tag "Key") regexp) | |
308 | (cons :tag "Key . Function" (symbol :tag "Key") function) | |
309 | (cons :tag "Function" (const :tag "Key: function" function) function) | |
310 | (cons :tag "Fun-all" (const :tag "Key: fun-all" fun-all) function))))) | |
d74d0c42 RW |
311 | (make-variable-buffer-local 'proced-filter) |
312 | ||
204ebc5b | 313 | (defcustom proced-sort 'pcpu |
da643190 | 314 | "Current sort scheme for proced listing. |
d74d0c42 RW |
315 | It must be the KEY of an element of `proced-grammar-alist'. |
316 | It can also be a list of KEYs as in the SORT-SCHEMEs of the elements | |
204ebc5b RW |
317 | of `proced-grammar-alist'." |
318 | :group 'proced | |
319 | :type '(choice (symbol :tag "Sort Scheme") | |
320 | (repeat :tag "Key List" (symbol :tag "Key")))) | |
f67cf064 | 321 | (make-variable-buffer-local 'proced-sort) |
d74d0c42 | 322 | |
b4f671ce RW |
323 | (defcustom proced-descend t |
324 | "Non-nil if proced listing is sorted in descending order." | |
325 | :group 'proced | |
326 | :type '(boolean :tag "Descending Sort Order")) | |
327 | (make-variable-buffer-local 'proced-descend) | |
328 | ||
d74d0c42 RW |
329 | (defcustom proced-goal-attribute 'args |
330 | "If non-nil, key of the attribute that defines the `goal-column'." | |
331 | :group 'proced | |
332 | :type '(choice (const :tag "none" nil) | |
333 | (symbol :tag "key"))) | |
334 | ||
413e65fe | 335 | (defcustom proced-auto-update-interval 5 |
204ebc5b | 336 | "Time interval in seconds for auto updating Proced buffers." |
d74d0c42 RW |
337 | :group 'proced |
338 | :type 'integer) | |
339 | ||
413e65fe | 340 | (defcustom proced-auto-update-flag nil |
da643190 | 341 | "Non-nil for auto update of a Proced buffer. |
413e65fe | 342 | Can be changed interactively via `proced-toggle-auto-update'." |
d74d0c42 RW |
343 | :group 'proced |
344 | :type 'boolean) | |
413e65fe | 345 | (make-variable-buffer-local 'proced-auto-update-flag) |
d74d0c42 | 346 | |
f1d27653 | 347 | (defcustom proced-tree-flag nil |
744c85fb | 348 | "Non-nil for display of Proced buffer as process tree." |
f1d27653 RW |
349 | :group 'proced |
350 | :type 'boolean) | |
351 | (make-variable-buffer-local 'proced-tree-flag) | |
352 | ||
3ac09bb4 RW |
353 | (defcustom proced-post-display-hook nil |
354 | "Normal hook run after displaying or updating a Proced buffer. | |
355 | May be used to adapt the window size via `fit-window-to-buffer'." | |
356 | :type 'hook | |
357 | :options '(fit-window-to-buffer) | |
358 | :group 'proced) | |
359 | ||
016151bb RW |
360 | (defcustom proced-after-send-signal-hook nil |
361 | "Normal hook run after sending a signal to processes by `proced-send-signal'. | |
362 | May be used to revert the process listing." | |
363 | :type 'hook | |
364 | :options '(proced-revert) | |
365 | :group 'proced) | |
366 | ||
92d9ce48 | 367 | ;; Internal variables |
d74d0c42 | 368 | |
4ed46aef RW |
369 | (defvar proced-available (not (null (list-system-processes))) |
370 | "Non-nil means Proced is known to work on this system.") | |
371 | ||
d74d0c42 | 372 | (defvar proced-process-alist nil |
da643190 RW |
373 | "Alist of processes displayed by Proced. |
374 | The car of each element is the PID, and the cdr is a list of | |
375 | cons pairs, see `proced-process-attributes'.") | |
d74d0c42 RW |
376 | (make-variable-buffer-local 'proced-process-alist) |
377 | ||
378 | (defvar proced-sort-internal nil | |
b4f671ce RW |
379 | "Sort scheme for listing (internal format). |
380 | It is a list of lists (KEY PREDICATE REVERSE).") | |
d74d0c42 | 381 | |
37e4d8ed | 382 | (defvar proced-marker-char ?* ; the answer is 42 |
d0482e4e | 383 | "In Proced, the current mark character.") |
37e4d8ed | 384 | |
aa5fecb5 RW |
385 | ;; Faces and font-lock code taken from dired, |
386 | ;; but face variables are deprecated for new code. | |
37e4d8ed RW |
387 | (defgroup proced-faces nil |
388 | "Faces used by Proced." | |
389 | :group 'proced | |
390 | :group 'faces) | |
391 | ||
37e4d8ed RW |
392 | (defface proced-mark |
393 | '((t (:inherit font-lock-constant-face))) | |
d0482e4e | 394 | "Face used for Proced marks." |
37e4d8ed | 395 | :group 'proced-faces) |
37e4d8ed RW |
396 | |
397 | (defface proced-marked | |
398 | '((t (:inherit font-lock-warning-face))) | |
399 | "Face used for marked processes." | |
400 | :group 'proced-faces) | |
37e4d8ed | 401 | |
da643190 RW |
402 | (defface proced-sort-header |
403 | '((t (:inherit font-lock-keyword-face))) | |
404 | "Face used for header of attribute used for sorting." | |
405 | :group 'proced-faces) | |
da643190 | 406 | |
37e4d8ed RW |
407 | (defvar proced-re-mark "^[^ \n]" |
408 | "Regexp matching a marked line. | |
409 | Important: the match ends just after the marker.") | |
410 | ||
d74d0c42 RW |
411 | (defvar proced-header-line nil |
412 | "Headers in Proced buffer as a string.") | |
413 | (make-variable-buffer-local 'proced-header-line) | |
414 | ||
48152a70 RW |
415 | (defvar proced-temp-alist nil |
416 | "Temporary alist (internal variable).") | |
f1d27653 | 417 | |
d74d0c42 | 418 | (defvar proced-process-tree nil |
f1d27653 RW |
419 | "Proced process tree (internal variable).") |
420 | ||
3ac09bb4 RW |
421 | (defvar proced-tree-depth nil |
422 | "Internal variable for depth of Proced process tree.") | |
d74d0c42 | 423 | |
413e65fe RW |
424 | (defvar proced-auto-update-timer nil |
425 | "Stores if Proced auto update timer is already installed.") | |
d74d0c42 | 426 | |
204ebc5b RW |
427 | (defvar proced-log-buffer "*Proced log*" |
428 | "Name of Proced Log buffer.") | |
429 | ||
d74d0c42 RW |
430 | (defconst proced-help-string |
431 | "(n)ext, (p)revious, (m)ark, (u)nmark, (k)ill, (q)uit (type ? for more help)" | |
d0482e4e | 432 | "Help string for Proced.") |
d74d0c42 RW |
433 | |
434 | (defconst proced-header-help-echo | |
da643190 | 435 | "mouse-1, mouse-2: sort by attribute %s%s (%s)" |
d74d0c42 RW |
436 | "Help string shown when mouse is over a sortable header.") |
437 | ||
438 | (defconst proced-field-help-echo | |
da643190 RW |
439 | "mouse-2, RET: refine by attribute %s %s" |
440 | "Help string shown when mouse is over a refinable field.") | |
37e4d8ed RW |
441 | |
442 | (defvar proced-font-lock-keywords | |
aa5fecb5 RW |
443 | `(;; (Any) proced marks. |
444 | (,proced-re-mark . 'proced-mark) | |
445 | ;; Processes marked with `proced-marker-char' | |
446 | ;; Should we make sure that only certain attributes are font-locked? | |
447 | (,(concat "^[" (char-to-string proced-marker-char) "]") | |
448 | ".+" (proced-move-to-goal-column) nil (0 'proced-marked)))) | |
37e4d8ed RW |
449 | |
450 | (defvar proced-mode-map | |
451 | (let ((km (make-sparse-keymap))) | |
92d9ce48 | 452 | ;; moving |
5adfa483 | 453 | (define-key km " " 'next-line) |
d74d0c42 RW |
454 | (define-key km "n" 'next-line) |
455 | (define-key km "p" 'previous-line) | |
456 | (define-key km "\C-n" 'next-line) | |
457 | (define-key km "\C-p" 'previous-line) | |
458 | (define-key km "\C-?" 'previous-line) | |
459 | (define-key km [down] 'next-line) | |
460 | (define-key km [up] 'previous-line) | |
92d9ce48 | 461 | ;; marking |
d6549da4 | 462 | (define-key km "d" 'proced-mark) ; Dired compatibility ("delete") |
37e4d8ed | 463 | (define-key km "m" 'proced-mark) |
2efb64a8 | 464 | (put 'proced-mark :advertised-binding "m") |
37e4d8ed | 465 | (define-key km "u" 'proced-unmark) |
e6854b3f | 466 | (define-key km "\177" 'proced-unmark-backward) |
92d9ce48 | 467 | (define-key km "M" 'proced-mark-all) |
37e4d8ed | 468 | (define-key km "U" 'proced-unmark-all) |
e6854b3f | 469 | (define-key km "t" 'proced-toggle-marks) |
d74d0c42 RW |
470 | (define-key km "C" 'proced-mark-children) |
471 | (define-key km "P" 'proced-mark-parents) | |
472 | ;; filtering | |
473 | (define-key km "f" 'proced-filter-interactive) | |
da643190 RW |
474 | (define-key km [mouse-2] 'proced-refine) |
475 | (define-key km "\C-m" 'proced-refine) | |
92d9ce48 | 476 | ;; sorting |
61548252 RW |
477 | (define-key km "sc" 'proced-sort-pcpu) |
478 | (define-key km "sm" 'proced-sort-pmem) | |
479 | (define-key km "sp" 'proced-sort-pid) | |
480 | (define-key km "ss" 'proced-sort-start) | |
d74d0c42 | 481 | (define-key km "sS" 'proced-sort-interactive) |
61548252 | 482 | (define-key km "st" 'proced-sort-time) |
d74d0c42 | 483 | (define-key km "su" 'proced-sort-user) |
da643190 RW |
484 | ;; similar to `Buffer-menu-sort-by-column' |
485 | (define-key km [header-line mouse-1] 'proced-sort-header) | |
d74d0c42 | 486 | (define-key km [header-line mouse-2] 'proced-sort-header) |
f1d27653 | 487 | (define-key km "T" 'proced-toggle-tree) |
d74d0c42 RW |
488 | ;; formatting |
489 | (define-key km "F" 'proced-format-interactive) | |
92d9ce48 | 490 | ;; operate |
9f583d14 | 491 | (define-key km "o" 'proced-omit-processes) |
92d9ce48 RW |
492 | (define-key km "x" 'proced-send-signal) ; Dired compatibility |
493 | (define-key km "k" 'proced-send-signal) ; kill processes | |
494 | ;; misc | |
92d9ce48 RW |
495 | (define-key km "h" 'describe-mode) |
496 | (define-key km "?" 'proced-help) | |
37e4d8ed RW |
497 | (define-key km [remap undo] 'proced-undo) |
498 | (define-key km [remap advertised-undo] 'proced-undo) | |
3ac09bb4 | 499 | ;; Additional keybindings are inherited from `special-mode-map' |
37e4d8ed | 500 | km) |
d0482e4e | 501 | "Keymap for Proced commands.") |
37e4d8ed RW |
502 | |
503 | (easy-menu-define | |
504 | proced-menu proced-mode-map "Proced Menu" | |
9f583d14 RW |
505 | `("Proced" |
506 | ["Mark" proced-mark | |
507 | :help "Mark Current Process"] | |
508 | ["Unmark" proced-unmark | |
509 | :help "Unmark Current Process"] | |
510 | ["Mark All" proced-mark-all | |
511 | :help "Mark All Processes"] | |
512 | ["Unmark All" proced-unmark-all | |
513 | :help "Unmark All Process"] | |
514 | ["Toggle Marks" proced-toggle-marks | |
515 | :help "Marked Processes Become Unmarked, and Vice Versa"] | |
d74d0c42 RW |
516 | ["Mark Children" proced-mark-children |
517 | :help "Mark Current Process and its Children"] | |
518 | ["Mark Parents" proced-mark-parents | |
519 | :help "Mark Current Process and its Parents"] | |
e6854b3f | 520 | "--" |
d74d0c42 RW |
521 | ("Filters" |
522 | :help "Select Filter for Process Listing" | |
523 | ,@(mapcar (lambda (el) | |
524 | (let ((filter (car el))) | |
525 | `[,(symbol-name filter) | |
526 | (proced-filter-interactive ',filter) | |
527 | :style radio | |
528 | :selected (eq proced-filter ',filter)])) | |
529 | proced-filter-alist)) | |
530 | ("Sorting" | |
da643190 | 531 | :help "Select Sort Scheme" |
d74d0c42 RW |
532 | ["Sort..." proced-sort-interactive |
533 | :help "Sort Process List"] | |
534 | "--" | |
535 | ["Sort by %CPU" proced-sort-pcpu] | |
536 | ["Sort by %MEM" proced-sort-pmem] | |
537 | ["Sort by PID" proced-sort-pid] | |
538 | ["Sort by START" proced-sort-start] | |
539 | ["Sort by TIME" proced-sort-time] | |
540 | ["Sort by USER" proced-sort-user]) | |
541 | ("Formats" | |
542 | :help "Select Format for Process Listing" | |
543 | ,@(mapcar (lambda (el) | |
544 | (let ((format (car el))) | |
545 | `[,(symbol-name format) | |
546 | (proced-format-interactive ',format) | |
547 | :style radio | |
548 | :selected (eq proced-format ',format)])) | |
549 | proced-format-alist)) | |
f1d27653 RW |
550 | ["Tree Display" proced-toggle-tree |
551 | :style toggle | |
552 | :selected (eval proced-tree-flag) | |
553 | :help "Display Proced Buffer as Process Tree"] | |
61548252 | 554 | "--" |
9f583d14 RW |
555 | ["Omit Marked Processes" proced-omit-processes |
556 | :help "Omit Marked Processes in Process Listing."] | |
37e4d8ed | 557 | "--" |
9f583d14 RW |
558 | ["Revert" revert-buffer |
559 | :help "Revert Process Listing"] | |
413e65fe | 560 | ["Auto Update" proced-toggle-auto-update |
b4f671ce | 561 | :style toggle |
413e65fe | 562 | :selected (eval proced-auto-update-flag) |
da643190 | 563 | :help "Auto Update of Proced Buffer"] |
9f583d14 | 564 | ["Send signal" proced-send-signal |
d74d0c42 | 565 | :help "Send Signal to Marked Processes"])) |
9f583d14 | 566 | |
92d9ce48 | 567 | ;; helper functions |
e6854b3f | 568 | (defun proced-marker-regexp () |
61548252 | 569 | "Return regexp matching `proced-marker-char'." |
92d9ce48 | 570 | ;; `proced-marker-char' must appear in column zero |
e6854b3f RW |
571 | (concat "^" (regexp-quote (char-to-string proced-marker-char)))) |
572 | ||
573 | (defun proced-success-message (action count) | |
61548252 | 574 | "Display success message for ACTION performed for COUNT processes." |
e6854b3f RW |
575 | (message "%s %s process%s" action count (if (= 1 count) "" "es"))) |
576 | ||
d74d0c42 RW |
577 | ;; Unlike dired, we do not define our own commands for vertical motion. |
578 | ;; If `goal-column' is set, `next-line' and `previous-line' are fancy | |
579 | ;; commands to satisfy our modest needs. If `proced-goal-attribute' | |
580 | ;; and/or `goal-column' are not set, `next-line' and `previous-line' | |
581 | ;; are really what we need to preserve the column of point. | |
582 | ;; We use `proced-move-to-goal-column' for "non-interactive" cases only | |
583 | ;; to get a well-defined position of point. | |
584 | ||
92d9ce48 | 585 | (defun proced-move-to-goal-column () |
da643190 | 586 | "Move to `goal-column' if non-nil. Return position of point." |
e6854b3f | 587 | (beginning-of-line) |
d74d0c42 RW |
588 | (unless (eobp) |
589 | (if goal-column | |
590 | (forward-char goal-column) | |
da643190 RW |
591 | (forward-char 2))) |
592 | (point)) | |
d74d0c42 RW |
593 | |
594 | (defun proced-header-line () | |
595 | "Return header line for Proced buffer." | |
596 | (list (propertize " " 'display '(space :align-to 0)) | |
016151bb RW |
597 | (if (<= (window-hscroll) (length proced-header-line)) |
598 | (replace-regexp-in-string ;; preserve text properties | |
599 | "\\(%\\)" "\\1\\1" | |
600 | (substring proced-header-line (window-hscroll)))))) | |
d74d0c42 RW |
601 | |
602 | (defun proced-pid-at-point () | |
603 | "Return pid of system process at point. | |
604 | Return nil if point is not on a process line." | |
605 | (save-excursion | |
606 | (beginning-of-line) | |
607 | (if (looking-at "^. .") | |
608 | (get-text-property (match-end 0) 'proced-pid)))) | |
609 | ||
610 | ;; proced mode | |
e6854b3f | 611 | |
3ac09bb4 | 612 | (define-derived-mode proced-mode special-mode "Proced" |
943c8b75 | 613 | "Mode for displaying system processes and sending signals to them. |
204ebc5b RW |
614 | Type \\[proced] to start a Proced session. In a Proced buffer |
615 | type \\<proced-mode-map>\\[proced-mark] to mark a process for later commands. | |
079ba9b7 SM |
616 | Type \\[proced-send-signal] to send signals to marked processes. |
617 | ||
da643190 RW |
618 | The initial content of a listing is defined by the variable `proced-filter' |
619 | and the variable `proced-format'. | |
620 | The variable `proced-filter' specifies which system processes are displayed. | |
621 | The variable `proced-format' specifies which attributes are displayed for | |
622 | each process. Type \\[proced-filter-interactive] and \\[proced-format-interactive] | |
623 | to change the values of `proced-filter' and `proced-format'. | |
624 | The current value of the variable `proced-filter' is indicated in the | |
625 | mode line. | |
626 | ||
627 | The sort order of Proced listings is defined by the variable `proced-sort'. | |
628 | Type \\[proced-sort-interactive] or click on a header in the header line | |
629 | to change the sort scheme. The current sort scheme is indicated in the | |
630 | mode line, using \"+\" or \"-\" for ascending or descending sort order. | |
631 | ||
f1d27653 RW |
632 | Type \\[proced-toggle-tree] to toggle whether the listing is |
633 | displayed as process tree. | |
634 | ||
4ed46aef | 635 | An existing Proced listing can be refined by typing \\[proced-refine]. |
da643190 RW |
636 | Refining an existing listing does not update the variable `proced-filter'. |
637 | ||
638 | The attribute-specific rules for formatting, filtering, sorting, and refining | |
639 | are defined in `proced-grammar-alist'. | |
640 | ||
3ac09bb4 RW |
641 | After displaying or updating a Proced buffer, Proced runs the normal hook |
642 | `proced-post-display-hook'. | |
643 | ||
079ba9b7 SM |
644 | \\{proced-mode-map}" |
645 | (abbrev-mode 0) | |
646 | (auto-fill-mode 0) | |
647 | (setq buffer-read-only t | |
b9df5969 RW |
648 | truncate-lines t |
649 | header-line-format '(:eval (proced-header-line))) | |
650 | (add-hook 'post-command-hook 'force-mode-line-update nil t) | |
079ba9b7 SM |
651 | (set (make-local-variable 'revert-buffer-function) 'proced-revert) |
652 | (set (make-local-variable 'font-lock-defaults) | |
d74d0c42 | 653 | '(proced-font-lock-keywords t nil nil beginning-of-line)) |
413e65fe RW |
654 | (if (and (not proced-auto-update-timer) proced-auto-update-interval) |
655 | (setq proced-auto-update-timer | |
656 | (run-at-time t proced-auto-update-interval | |
657 | 'proced-auto-update-timer)))) | |
216d81a1 | 658 | |
079ba9b7 SM |
659 | ;;;###autoload |
660 | (defun proced (&optional arg) | |
da643190 | 661 | "Generate a listing of UNIX system processes. |
37e4d8ed RW |
662 | If invoked with optional ARG the window displaying the process |
663 | information will be displayed but not selected. | |
3ac09bb4 | 664 | Runs the normal hook `proced-post-display-hook'. |
37e4d8ed | 665 | |
667df88c | 666 | See `proced-mode' for a description of features available in Proced buffers." |
37e4d8ed | 667 | (interactive "P") |
413e65fe RW |
668 | (unless proced-available |
669 | (error "Proced is not available on this system")) | |
92d9ce48 | 670 | (let ((buffer (get-buffer-create "*Proced*")) new) |
61548252 | 671 | (set-buffer buffer) |
37e4d8ed | 672 | (setq new (zerop (buffer-size))) |
3ac09bb4 RW |
673 | (when new |
674 | (proced-mode) | |
675 | ;; `proced-update' runs `proced-post-display-hook' only if the | |
676 | ;; Proced buffer has been selected. Yet the following call of | |
677 | ;; `proced-update' is for an empty Proced buffer that has not | |
678 | ;; yet been selected. Therefore we need to call | |
679 | ;; `proced-post-display-hook' below. | |
680 | (proced-update t)) | |
37e4d8ed | 681 | (if arg |
3ac09bb4 RW |
682 | (progn |
683 | (display-buffer buffer) | |
684 | (with-current-buffer buffer | |
8b78760b | 685 | (proced-update t))) |
61548252 | 686 | (pop-to-buffer buffer) |
8b78760b | 687 | (proced-update t) |
008c22f2 JL |
688 | (message |
689 | (substitute-command-keys | |
690 | "Type \\<proced-mode-map>\\[quit-window] to quit, \\[proced-help] for help"))))) | |
37e4d8ed | 691 | |
413e65fe | 692 | (defun proced-auto-update-timer () |
da643190 | 693 | "Auto-update Proced buffers using `run-at-time'." |
d74d0c42 RW |
694 | (dolist (buf (buffer-list)) |
695 | (with-current-buffer buf | |
696 | (if (and (eq major-mode 'proced-mode) | |
413e65fe | 697 | proced-auto-update-flag) |
d74d0c42 RW |
698 | (proced-update t t))))) |
699 | ||
413e65fe | 700 | (defun proced-toggle-auto-update (arg) |
da643190 RW |
701 | "Change whether this Proced buffer is updated automatically. |
702 | With prefix ARG, update this buffer automatically if ARG is positive, | |
413e65fe RW |
703 | otherwise do not update. Sets the variable `proced-auto-update-flag'. |
704 | The time interval for updates is specified via `proced-auto-update-interval'." | |
d74d0c42 | 705 | (interactive (list (or current-prefix-arg 'toggle))) |
413e65fe RW |
706 | (setq proced-auto-update-flag |
707 | (cond ((eq arg 'toggle) (not proced-auto-update-flag)) | |
d74d0c42 | 708 | (arg (> (prefix-numeric-value arg) 0)) |
413e65fe RW |
709 | (t (not proced-auto-update-flag)))) |
710 | (message "Proced auto update %s" | |
711 | (if proced-auto-update-flag "enabled" "disabled"))) | |
92d9ce48 | 712 | |
3ac09bb4 RW |
713 | ;;; Mark |
714 | ||
37e4d8ed RW |
715 | (defun proced-mark (&optional count) |
716 | "Mark the current (or next COUNT) processes." | |
717 | (interactive "p") | |
718 | (proced-do-mark t count)) | |
719 | ||
720 | (defun proced-unmark (&optional count) | |
721 | "Unmark the current (or next COUNT) processes." | |
722 | (interactive "p") | |
723 | (proced-do-mark nil count)) | |
724 | ||
e6854b3f RW |
725 | (defun proced-unmark-backward (&optional count) |
726 | "Unmark the previous (or COUNT previous) processes." | |
61548252 RW |
727 | ;; Analogous to `dired-unmark-backward', |
728 | ;; but `ibuffer-unmark-backward' behaves different. | |
e6854b3f RW |
729 | (interactive "p") |
730 | (proced-do-mark nil (- (or count 1)))) | |
731 | ||
37e4d8ed | 732 | (defun proced-do-mark (mark &optional count) |
9f583d14 | 733 | "Mark the current (or next COUNT) processes using MARK." |
37e4d8ed | 734 | (or count (setq count 1)) |
e6854b3f | 735 | (let ((backward (< count 0)) |
37e4d8ed | 736 | buffer-read-only) |
92d9ce48 RW |
737 | (setq count (1+ (if (<= 0 count) count |
738 | (min (1- (line-number-at-pos)) (abs count))))) | |
739 | (beginning-of-line) | |
740 | (while (not (or (zerop (setq count (1- count))) (eobp))) | |
741 | (proced-insert-mark mark backward)) | |
742 | (proced-move-to-goal-column))) | |
37e4d8ed | 743 | |
3ac09bb4 RW |
744 | (defun proced-toggle-marks () |
745 | "Toggle marks: marked processes become unmarked, and vice versa." | |
746 | (interactive) | |
747 | (let ((mark-re (proced-marker-regexp)) | |
748 | buffer-read-only) | |
749 | (save-excursion | |
750 | (goto-char (point-min)) | |
751 | (while (not (eobp)) | |
752 | (cond ((looking-at mark-re) | |
753 | (proced-insert-mark nil)) | |
754 | ((looking-at " ") | |
755 | (proced-insert-mark t)) | |
756 | (t | |
757 | (forward-line 1))))))) | |
758 | ||
759 | (defun proced-insert-mark (mark &optional backward) | |
760 | "If MARK is non-nil, insert `proced-marker-char'. | |
761 | If BACKWARD is non-nil, move one line backwards before inserting the mark. | |
762 | Otherwise move one line forward after inserting the mark." | |
763 | (if backward (forward-line -1)) | |
764 | (insert (if mark proced-marker-char ?\s)) | |
765 | (delete-char 1) | |
766 | (unless backward (forward-line))) | |
767 | ||
37e4d8ed | 768 | (defun proced-mark-all () |
9f583d14 RW |
769 | "Mark all processes. |
770 | If `transient-mark-mode' is turned on and the region is active, | |
771 | mark the region." | |
37e4d8ed RW |
772 | (interactive) |
773 | (proced-do-mark-all t)) | |
774 | ||
775 | (defun proced-unmark-all () | |
9f583d14 RW |
776 | "Unmark all processes. |
777 | If `transient-mark-mode' is turned on and the region is active, | |
778 | unmark the region." | |
37e4d8ed RW |
779 | (interactive) |
780 | (proced-do-mark-all nil)) | |
781 | ||
782 | (defun proced-do-mark-all (mark) | |
9f583d14 RW |
783 | "Mark all processes using MARK. |
784 | If `transient-mark-mode' is turned on and the region is active, | |
785 | mark the region." | |
3ac09bb4 RW |
786 | (let* ((count 0) |
787 | (proced-marker-char (if mark proced-marker-char ?\s)) | |
788 | (marker-re (proced-marker-regexp)) | |
789 | end buffer-read-only) | |
e6854b3f | 790 | (save-excursion |
d74d0c42 | 791 | (if (use-region-p) |
9f583d14 RW |
792 | ;; Operate even on those lines that are only partially a part |
793 | ;; of region. This appears most consistent with | |
794 | ;; `proced-move-to-goal-column'. | |
d74d0c42 RW |
795 | (progn (setq end (save-excursion |
796 | (goto-char (region-end)) | |
797 | (unless (looking-at "^") (forward-line)) | |
798 | (point))) | |
799 | (goto-char (region-beginning)) | |
800 | (unless (looking-at "^") (beginning-of-line))) | |
9f583d14 | 801 | (goto-char (point-min)) |
d74d0c42 RW |
802 | (setq end (point-max))) |
803 | (while (< (point) end) | |
3ac09bb4 RW |
804 | (unless (looking-at marker-re) |
805 | (setq count (1+ count)) | |
806 | (insert proced-marker-char) | |
807 | (delete-char 1)) | |
808 | (forward-line)) | |
809 | (proced-success-message (if mark "Marked" "Unmarked") count)))) | |
e6854b3f | 810 | |
d74d0c42 RW |
811 | (defun proced-mark-children (ppid &optional omit-ppid) |
812 | "Mark child processes of process PPID. | |
813 | Also mark process PPID unless prefix OMIT-PPID is non-nil." | |
814 | (interactive (list (proced-pid-at-point) current-prefix-arg)) | |
815 | (proced-mark-process-alist | |
816 | (proced-filter-children proced-process-alist ppid omit-ppid))) | |
817 | ||
818 | (defun proced-mark-parents (cpid &optional omit-cpid) | |
819 | "Mark parent processes of process CPID. | |
820 | Also mark CPID unless prefix OMIT-CPID is non-nil." | |
821 | (interactive (list (proced-pid-at-point) current-prefix-arg)) | |
822 | (proced-mark-process-alist | |
823 | (proced-filter-parents proced-process-alist cpid omit-cpid))) | |
824 | ||
825 | (defun proced-mark-process-alist (process-alist &optional quiet) | |
f1d27653 RW |
826 | "Mark processes in PROCESS-ALIST. |
827 | If QUIET is non-nil suppress status message." | |
d74d0c42 RW |
828 | (let ((count 0)) |
829 | (if process-alist | |
830 | (let (buffer-read-only) | |
831 | (save-excursion | |
832 | (goto-char (point-min)) | |
833 | (while (not (eobp)) | |
834 | (when (assq (proced-pid-at-point) process-alist) | |
835 | (insert proced-marker-char) | |
836 | (delete-char 1) | |
837 | (setq count (1+ count))) | |
838 | (forward-line))))) | |
839 | (unless quiet | |
840 | (proced-success-message "Marked" count)))) | |
841 | ||
e6854b3f RW |
842 | ;; Mostly analog of `dired-do-kill-lines'. |
843 | ;; However, for negative args the target lines of `dired-do-kill-lines' | |
844 | ;; include the current line, whereas `dired-mark' for negative args operates | |
d74d0c42 | 845 | ;; on the preceding lines. Here we are consistent with `dired-mark'. |
9f583d14 RW |
846 | (defun proced-omit-processes (&optional arg quiet) |
847 | "Omit marked processes. | |
848 | With prefix ARG, omit that many lines starting with the current line. | |
849 | \(A negative argument omits backward.) | |
d74d0c42 RW |
850 | If `transient-mark-mode' is turned on and the region is active, |
851 | omit the processes in region. | |
e6854b3f | 852 | If QUIET is non-nil suppress status message. |
9f583d14 | 853 | Returns count of omitted lines." |
e6854b3f RW |
854 | (interactive "P") |
855 | (let ((mark-re (proced-marker-regexp)) | |
856 | (count 0) | |
857 | buffer-read-only) | |
d74d0c42 RW |
858 | (cond ((use-region-p) ;; Omit active region |
859 | (let ((lines (count-lines (region-beginning) (region-end)))) | |
860 | (save-excursion | |
861 | (goto-char (region-beginning)) | |
862 | (while (< count lines) | |
863 | (proced-omit-process) | |
864 | (setq count (1+ count)))))) | |
865 | ((not arg) ;; Omit marked lines | |
866 | (save-excursion | |
867 | (goto-char (point-min)) | |
868 | (while (and (not (eobp)) | |
869 | (re-search-forward mark-re nil t)) | |
870 | (proced-omit-process) | |
871 | (setq count (1+ count))))) | |
872 | ((< 0 arg) ;; Omit forward | |
873 | (while (and (not (eobp)) (< count arg)) | |
874 | (proced-omit-process) | |
875 | (setq count (1+ count)))) | |
876 | ((< arg 0) ;; Omit backward | |
877 | (while (and (not (bobp)) (< count (- arg))) | |
878 | (forward-line -1) | |
879 | (proced-omit-process) | |
880 | (setq count (1+ count))))) | |
92d9ce48 | 881 | (unless (zerop count) (proced-move-to-goal-column)) |
9f583d14 | 882 | (unless quiet (proced-success-message "Omitted" count)) |
e6854b3f | 883 | count)) |
37e4d8ed | 884 | |
d74d0c42 RW |
885 | (defun proced-omit-process () |
886 | "Omit process from listing point is on. | |
887 | Update `proced-process-alist' accordingly." | |
888 | (setq proced-process-alist | |
889 | (assq-delete-all (proced-pid-at-point) proced-process-alist)) | |
890 | (delete-region (line-beginning-position) | |
891 | (save-excursion (forward-line) (point)))) | |
892 | ||
893 | ;;; Filtering | |
894 | ||
895 | (defun proced-filter (process-alist filter-list) | |
da643190 RW |
896 | "Apply FILTER-LIST to PROCESS-ALIST. |
897 | Return the filtered process list." | |
d74d0c42 RW |
898 | (if (symbolp filter-list) |
899 | (setq filter-list (cdr (assq filter-list proced-filter-alist)))) | |
900 | (dolist (filter filter-list) | |
901 | (let (new-alist) | |
902 | (cond ( ;; apply function to entire process list | |
903 | (eq (car filter) 'fun-all) | |
904 | (setq new-alist (funcall (cdr filter) process-alist))) | |
905 | ( ;; apply predicate to each list of attributes | |
906 | (eq (car filter) 'function) | |
907 | (dolist (process process-alist) | |
908 | (if (funcall (car filter) (cdr process)) | |
909 | (push process new-alist)))) | |
910 | (t ;; apply predicate to specified attribute | |
911 | (let ((fun (if (stringp (cdr filter)) | |
912 | `(lambda (val) | |
913 | (string-match ,(cdr filter) val)) | |
914 | (cdr filter))) | |
915 | value) | |
916 | (dolist (process process-alist) | |
917 | (setq value (cdr (assq (car filter) (cdr process)))) | |
918 | (if (and value (funcall fun value)) | |
919 | (push process new-alist)))))) | |
920 | (setq process-alist new-alist))) | |
921 | process-alist) | |
922 | ||
da643190 | 923 | (defun proced-filter-interactive (scheme) |
d74d0c42 RW |
924 | "Filter Proced buffer using SCHEME. |
925 | When called interactively, an empty string means nil, i.e., no filtering. | |
da643190 | 926 | Set variable `proced-filter' to SCHEME. Revert listing." |
37e4d8ed | 927 | (interactive |
d74d0c42 RW |
928 | (let ((scheme (completing-read "Filter: " |
929 | proced-filter-alist nil t))) | |
da643190 | 930 | (list (if (string= "" scheme) nil (intern scheme))))) |
aa5fecb5 RW |
931 | ;; only update if necessary |
932 | (unless (eq proced-filter scheme) | |
933 | (setq proced-filter scheme) | |
934 | (proced-update t))) | |
d74d0c42 | 935 | |
48152a70 RW |
936 | (defun proced-filter-parents (process-alist pid &optional omit-pid) |
937 | "For PROCESS-ALIST return list of parent processes of PID. | |
938 | This list includes PID unless OMIT-PID is non-nil." | |
939 | (let ((parent-list (unless omit-pid (list (assq pid process-alist)))) | |
940 | (process (assq pid process-alist)) | |
941 | ppid) | |
942 | (while (and (setq ppid (cdr (assq 'ppid (cdr process)))) | |
943 | ;; Ignore a PPID that equals PID. | |
944 | (/= ppid pid) | |
945 | ;; Accept only PPIDs that correspond to members in PROCESS-ALIST. | |
946 | (setq process (assq ppid process-alist))) | |
947 | (setq pid ppid) | |
948 | (push process parent-list)) | |
949 | parent-list)) | |
950 | ||
951 | (defun proced-filter-children (process-alist ppid &optional omit-ppid) | |
952 | "For PROCESS-ALIST return list of child processes of PPID. | |
953 | This list includes PPID unless OMIT-PPID is non-nil." | |
954 | (let ((proced-temp-alist (proced-children-alist process-alist)) | |
955 | new-alist) | |
956 | (dolist (pid (proced-children-pids ppid)) | |
957 | (push (assq pid process-alist) new-alist)) | |
958 | (if omit-ppid | |
959 | (assq-delete-all ppid new-alist) | |
960 | new-alist))) | |
961 | ||
962 | ;;; Process tree | |
963 | ||
f1d27653 RW |
964 | (defun proced-children-alist (process-alist) |
965 | "Return children alist for PROCESS-ALIST. | |
966 | The children alist has elements (PPID PID1 PID2 ...). | |
d74d0c42 | 967 | PPID is a parent PID. PID1, PID2, ... are the child processes of PPID. |
48152a70 | 968 | The children alist inherits the sorting order of PROCESS-ALIST. |
d74d0c42 | 969 | The list of children does not include grandchildren." |
f1d27653 RW |
970 | ;; The PPIDs inherit the sorting order of PROCESS-ALIST. |
971 | (let ((process-tree (mapcar (lambda (a) (list (car a))) process-alist)) | |
972 | ppid) | |
973 | (dolist (process process-alist) | |
d74d0c42 | 974 | (setq ppid (cdr (assq 'ppid (cdr process)))) |
f1d27653 RW |
975 | (if (and ppid |
976 | ;; Ignore a PPID that equals PID. | |
977 | (/= ppid (car process)) | |
978 | ;; Accept only PPIDs that correspond to members in PROCESS-ALIST. | |
979 | (assq ppid process-alist)) | |
980 | (let ((temp-alist process-tree) elt) | |
981 | (while (setq elt (pop temp-alist)) | |
982 | (when (eq ppid (car elt)) | |
983 | (setq temp-alist nil) | |
984 | (setcdr elt (cons (car process) (cdr elt)))))))) | |
985 | ;; The child processes inherit the sorting order of PROCESS-ALIST. | |
986 | (setq process-tree | |
987 | (mapcar (lambda (a) (cons (car a) (nreverse (cdr a)))) | |
988 | process-tree)))) | |
989 | ||
48152a70 RW |
990 | (defun proced-children-pids (ppid) |
991 | "Return list of children PIDs of PPID (including PPID)." | |
992 | (let ((cpids (cdr (assq ppid proced-temp-alist)))) | |
993 | (if cpids | |
994 | (cons ppid (apply 'append (mapcar 'proced-children-pids cpids))) | |
995 | (list ppid)))) | |
996 | ||
f1d27653 | 997 | (defun proced-process-tree (process-alist) |
48152a70 RW |
998 | "Return process tree for PROCESS-ALIST. |
999 | It is an alist of alists where the car of each alist is a parent process | |
1000 | and the cdr is a list of child processes according to the ppid attribute | |
1001 | of these processes. | |
1002 | The process tree inherits the sorting order of PROCESS-ALIST." | |
1003 | (let ((proced-temp-alist (proced-children-alist process-alist)) | |
f1d27653 | 1004 | pid-alist proced-process-tree) |
48152a70 | 1005 | (while (setq pid-alist (pop proced-temp-alist)) |
f1d27653 RW |
1006 | (push (proced-process-tree-internal pid-alist) proced-process-tree)) |
1007 | (nreverse proced-process-tree))) | |
1008 | ||
1009 | (defun proced-process-tree-internal (pid-alist) | |
1010 | "Helper function for `proced-process-tree'." | |
1011 | (let ((cpid-list (cdr pid-alist)) cpid-alist cpid) | |
1012 | (while (setq cpid (car cpid-list)) | |
48152a70 | 1013 | (if (setq cpid-alist (assq cpid proced-temp-alist)) |
f1d27653 RW |
1014 | ;; Unprocessed part of process tree that needs to be |
1015 | ;; analyzed recursively. | |
1016 | (progn | |
48152a70 RW |
1017 | (setq proced-temp-alist |
1018 | (assq-delete-all cpid proced-temp-alist)) | |
f1d27653 RW |
1019 | (setcar cpid-list (proced-process-tree-internal cpid-alist))) |
1020 | ;; We already processed this subtree and take it "as is". | |
1021 | (setcar cpid-list (assq cpid proced-process-tree)) | |
1022 | (setq proced-process-tree | |
1023 | (assq-delete-all cpid proced-process-tree))) | |
1024 | (pop cpid-list))) | |
1025 | pid-alist) | |
1026 | ||
1027 | (defun proced-toggle-tree (arg) | |
48152a70 | 1028 | "Toggle the display of the process listing as process tree. |
f1d27653 | 1029 | With prefix ARG, display as process tree if ARG is positive, otherwise |
48152a70 RW |
1030 | do not display as process tree. Sets the variable `proced-tree-flag'. |
1031 | ||
1032 | The process tree is generated from the selected processes in the | |
1033 | Proced buffer (that is, the processes in `proced-process-alist'). | |
1034 | All processes that do not have a parent process in this list | |
1035 | according to their ppid attribute become the root of a process tree. | |
1036 | Each parent process is followed by its child processes. | |
1037 | The process tree inherits the chosen sorting order of the process listing, | |
1038 | that is, child processes of the same parent process are sorted using | |
1039 | the selected sorting order." | |
f1d27653 RW |
1040 | (interactive (list (or current-prefix-arg 'toggle))) |
1041 | (setq proced-tree-flag | |
1042 | (cond ((eq arg 'toggle) (not proced-tree-flag)) | |
1043 | (arg (> (prefix-numeric-value arg) 0)) | |
1044 | (t (not proced-tree-flag)))) | |
1045 | (proced-update) | |
1046 | (message "Proced process tree display %s" | |
1047 | (if proced-tree-flag "enabled" "disabled"))) | |
1048 | ||
1049 | (defun proced-tree (process-alist) | |
48152a70 RW |
1050 | "Rearrange PROCESS-ALIST as process tree. |
1051 | If `proced-tree-flag' is non-nil, rearrange PROCESS-ALIST such that | |
1052 | every processes is followed by its child processes. Each process | |
1053 | gets a tree attribute that specifies the depth of the process in the tree. | |
1054 | A root process is a process with no parent within PROCESS-ALIST according | |
1055 | to its value of the ppid attribute. It has depth 0. | |
1056 | ||
1057 | If `proced-tree-flag' is nil, remove the tree attribute. | |
1058 | Return the rearranged process list." | |
f1d27653 RW |
1059 | (if proced-tree-flag |
1060 | ;; add tree attribute | |
1061 | (let ((process-tree (proced-process-tree process-alist)) | |
3ac09bb4 | 1062 | (proced-tree-depth 0) |
48152a70 | 1063 | (proced-temp-alist process-alist) |
f1d27653 RW |
1064 | proced-process-tree pt) |
1065 | (while (setq pt (pop process-tree)) | |
1066 | (proced-tree-insert pt)) | |
1067 | (nreverse proced-process-tree)) | |
48152a70 RW |
1068 | ;; remove tree attribute |
1069 | (let ((process-alist process-alist)) | |
1070 | (while process-alist | |
1071 | (setcar process-alist | |
1072 | (assq-delete-all 'tree (car process-alist))) | |
1073 | (pop process-alist))) | |
1074 | process-alist)) | |
f1d27653 RW |
1075 | |
1076 | (defun proced-tree-insert (process-tree) | |
1077 | "Helper function for `proced-tree'." | |
48152a70 | 1078 | (let ((pprocess (assq (car process-tree) proced-temp-alist))) |
f1d27653 | 1079 | (push (append (list (car pprocess)) |
3ac09bb4 | 1080 | (list (cons 'tree proced-tree-depth)) |
f1d27653 RW |
1081 | (cdr pprocess)) |
1082 | proced-process-tree) | |
1083 | (if (cdr process-tree) | |
3ac09bb4 | 1084 | (let ((proced-tree-depth (1+ proced-tree-depth))) |
f1d27653 | 1085 | (mapc 'proced-tree-insert (cdr process-tree)))))) |
d74d0c42 | 1086 | |
da643190 RW |
1087 | ;; Refining |
1088 | ||
1089 | ;; Filters are used to select the processes in a new listing. | |
1090 | ;; Refiners are used to narrow down further (interactively) the processes | |
1091 | ;; in an existing listing. | |
1092 | ||
1093 | (defun proced-refine (&optional event) | |
1094 | "Refine Proced listing by comparing with the attribute value at point. | |
1095 | Optional EVENT is the location of the Proced field. | |
1096 | ||
b4f671ce RW |
1097 | Refinement is controlled by the REFINER defined for each attribute ATTR |
1098 | in `proced-grammar-alist'. | |
1099 | ||
4ed46aef RW |
1100 | If REFINER is a list of flags and point is on a process's value of ATTR, |
1101 | this command compares the value of ATTR of every process with the value | |
1102 | of ATTR of the process at the position of point. | |
da643190 RW |
1103 | |
1104 | The predicate for the comparison of two ATTR values is defined | |
1105 | in `proced-grammar-alist'. For each return value of the predicate | |
b4f671ce RW |
1106 | a refine flag is defined in `proced-grammar-alist'. One can select |
1107 | processes for which the value of ATTR is \"less than\", \"equal\", | |
1108 | and / or \"larger\" than ATTR of the process point is on. A process | |
1109 | is included in the new listing if the refine flag for the corresponding | |
1110 | return value of the predicate is non-nil. | |
da643190 | 1111 | The help-echo string for `proced-refine' uses \"+\" or \"-\" to indicate |
b4f671ce RW |
1112 | the current values of these refine flags. |
1113 | ||
1114 | If REFINER is a cons pair (FUNCTION . HELP-ECHO), FUNCTION is called | |
1115 | with one argument, the PID of the process at the position of point. | |
1116 | The function must return a list of PIDs that is used for the refined | |
1117 | listing. HELP-ECHO is a string that is shown when mouse is over this field. | |
da643190 | 1118 | |
b4f671ce RW |
1119 | This command refines an already existing process listing generated initially |
1120 | based on the value of the variable `proced-filter'. It does not change | |
1121 | this variable. It does not revert the listing. If you frequently need | |
1122 | a certain refinement, consider defining a new filter in `proced-filter-alist'." | |
d74d0c42 RW |
1123 | (interactive (list last-input-event)) |
1124 | (if event (posn-set-point (event-end event))) | |
1125 | (let ((key (get-text-property (point) 'proced-key)) | |
1126 | (pid (get-text-property (point) 'proced-pid))) | |
1127 | (if (and key pid) | |
1128 | (let* ((grammar (assq key proced-grammar-alist)) | |
b4f671ce RW |
1129 | (refiner (nth 7 grammar))) |
1130 | (when refiner | |
1131 | (cond ((functionp (car refiner)) | |
1132 | (setq proced-process-alist (funcall (car refiner) pid))) | |
1133 | ((consp refiner) | |
1134 | (let ((predicate (nth 4 grammar)) | |
1135 | (ref (cdr (assq key (cdr (assq pid proced-process-alist))))) | |
1136 | val new-alist) | |
1137 | (dolist (process proced-process-alist) | |
1138 | (setq val (funcall predicate (cdr (assq key (cdr process))) ref)) | |
1139 | (if (cond ((not val) (nth 2 refiner)) | |
1140 | ((eq val 'equal) (nth 1 refiner)) | |
1141 | (val (car refiner))) | |
1142 | (push process new-alist))) | |
1143 | (setq proced-process-alist new-alist)))) | |
da643190 | 1144 | ;; Do not revert listing. |
d74d0c42 | 1145 | (proced-update))) |
da643190 | 1146 | (message "No refiner defined here.")))) |
d74d0c42 RW |
1147 | |
1148 | ;; Proced predicates for sorting and filtering are based on a three-valued | |
1149 | ;; logic: | |
da643190 RW |
1150 | ;; Predicates take two arguments P1 and P2, the corresponding attribute |
1151 | ;; values of two processes. Predicates should return 'equal if P1 has | |
d74d0c42 RW |
1152 | ;; same rank like P2. Any other non-nil value says that P1 is "less than" P2, |
1153 | ;; or nil if not. | |
1154 | ||
1155 | (defun proced-< (num1 num2) | |
1156 | "Return t if NUM1 less than NUM2. | |
1157 | Return `equal' if NUM1 equals NUM2. Return nil if NUM1 greater than NUM2." | |
1158 | (if (= num1 num2) | |
1159 | 'equal | |
1160 | (< num1 num2))) | |
1161 | ||
1162 | (defun proced-string-lessp (s1 s2) | |
1163 | "Return t if string S1 is less than S2 in lexicographic order. | |
1164 | Return `equal' if S1 and S2 have identical contents. | |
1165 | Return nil otherwise." | |
1166 | (if (string= s1 s2) | |
1167 | 'equal | |
1168 | (string-lessp s1 s2))) | |
1169 | ||
1170 | (defun proced-time-lessp (t1 t2) | |
1171 | "Return t if time value T1 is less than time value T2. | |
1172 | Return `equal' if T1 equals T2. Return nil otherwise." | |
1173 | (with-decoded-time-value ((high1 low1 micro1 t1) | |
1174 | (high2 low2 micro2 t2)) | |
1175 | (cond ((< high1 high2)) | |
1176 | ((< high2 high1) nil) | |
1177 | ((< low1 low2)) | |
1178 | ((< low2 low1) nil) | |
1179 | ((< micro1 micro2)) | |
1180 | ((< micro2 micro1) nil) | |
1181 | (t 'equal)))) | |
37e4d8ed | 1182 | |
d74d0c42 RW |
1183 | ;;; Sorting |
1184 | ||
1185 | (defsubst proced-xor (b1 b2) | |
1186 | "Return the logical exclusive or of args B1 and B2." | |
1187 | (and (or b1 b2) | |
1188 | (not (and b1 b2)))) | |
1189 | ||
1190 | (defun proced-sort-p (p1 p2) | |
1191 | "Predicate for sorting processes P1 and P2." | |
1192 | (if (not (cdr proced-sort-internal)) | |
1193 | ;; only one predicate: fast scheme | |
1194 | (let* ((sorter (car proced-sort-internal)) | |
1195 | (k1 (cdr (assq (car sorter) (cdr p1)))) | |
1196 | (k2 (cdr (assq (car sorter) (cdr p2))))) | |
1197 | ;; if the attributes are undefined, we should really abort sorting | |
1198 | (if (and k1 k2) | |
1199 | (proced-xor (funcall (nth 1 sorter) k1 k2) | |
1200 | (nth 2 sorter)))) | |
1201 | (let ((sort-list proced-sort-internal) sorter predicate k1 k2) | |
1202 | (catch 'done | |
1203 | (while (setq sorter (pop sort-list)) | |
1204 | (setq k1 (cdr (assq (car sorter) (cdr p1))) | |
1205 | k2 (cdr (assq (car sorter) (cdr p2))) | |
1206 | predicate | |
1207 | (if (and k1 k2) | |
1208 | (funcall (nth 1 sorter) k1 k2))) | |
1209 | (if (not (eq predicate 'equal)) | |
1210 | (throw 'done (proced-xor predicate (nth 2 sorter))))) | |
1211 | (eq t predicate))))) | |
1212 | ||
b4f671ce | 1213 | (defun proced-sort (process-alist sorter descend) |
d74d0c42 | 1214 | "Sort PROCESS-ALIST using scheme SORTER. |
b4f671ce RW |
1215 | SORTER is a scheme like `proced-sort'. |
1216 | DESCEND is non-nil if the first element of SORTER is sorted | |
1217 | in descending order. | |
da643190 | 1218 | Return the sorted process list." |
d74d0c42 RW |
1219 | ;; translate SORTER into a list of lists (KEY PREDICATE REVERSE) |
1220 | (setq proced-sort-internal | |
1221 | (mapcar (lambda (arg) | |
1222 | (let ((grammar (assq arg proced-grammar-alist))) | |
f1d27653 RW |
1223 | (unless (nth 4 grammar) |
1224 | (error "Attribute %s not sortable" (car grammar))) | |
d74d0c42 RW |
1225 | (list arg (nth 4 grammar) (nth 5 grammar)))) |
1226 | (cond ((listp sorter) sorter) | |
1227 | ((and (symbolp sorter) | |
1228 | (nth 6 (assq sorter proced-grammar-alist)))) | |
1229 | ((symbolp sorter) (list sorter)) | |
1230 | (t (error "Sorter undefined %s" sorter))))) | |
1231 | (if proced-sort-internal | |
b4f671ce RW |
1232 | (progn |
1233 | ;; splice DESCEND into the list | |
1234 | (setcar proced-sort-internal | |
1235 | (list (caar proced-sort-internal) | |
1236 | (nth 1 (car proced-sort-internal)) descend)) | |
1237 | (sort process-alist 'proced-sort-p)) | |
d74d0c42 RW |
1238 | process-alist)) |
1239 | ||
4ed46aef | 1240 | (defun proced-sort-interactive (scheme &optional arg) |
d74d0c42 RW |
1241 | "Sort Proced buffer using SCHEME. |
1242 | When called interactively, an empty string means nil, i.e., no sorting. | |
da643190 | 1243 | |
4ed46aef RW |
1244 | Prefix ARG controls sort order: |
1245 | - If prefix ARG is positive (negative), sort in ascending (descending) order. | |
1246 | - If ARG is nil or 'no-arg and SCHEME is equal to the previous sorting scheme, | |
1247 | reverse the sorting order. | |
1248 | - If ARG is nil or 'no-arg and SCHEME differs from the previous sorting scheme, | |
1249 | adopt the sorting order defined for SCHEME in `proced-grammar-alist'. | |
b4f671ce | 1250 | |
da643190 RW |
1251 | Set variable `proced-sort' to SCHEME. The current sort scheme is displayed |
1252 | in the mode line, using \"+\" or \"-\" for ascending or descending order." | |
d74d0c42 | 1253 | (interactive |
f1d27653 RW |
1254 | (let* (choices |
1255 | (scheme (completing-read "Sort attribute: " | |
1256 | (dolist (grammar proced-grammar-alist choices) | |
1257 | (if (nth 4 grammar) | |
1258 | (push (list (car grammar)) choices))) | |
1259 | nil t))) | |
d74d0c42 | 1260 | (list (if (string= "" scheme) nil (intern scheme)) |
4ed46aef RW |
1261 | ;; like 'toggle in `define-derived-mode' |
1262 | (or current-prefix-arg 'no-arg)))) | |
1263 | ||
b4f671ce | 1264 | (setq proced-descend |
4ed46aef RW |
1265 | ;; If `proced-sort-interactive' is called repeatedly for the same |
1266 | ;; sort key, the sort order is reversed. | |
1267 | (cond ((and (eq arg 'no-arg) (equal proced-sort scheme)) | |
1268 | (not proced-descend)) | |
1269 | ((eq arg 'no-arg) | |
1270 | (nth 5 (assq (if (consp scheme) (car scheme) scheme) | |
1271 | proced-grammar-alist))) | |
1272 | (arg (< (prefix-numeric-value arg) 0)) | |
1273 | ((equal proced-sort scheme) | |
1274 | (not proced-descend)) | |
1275 | (t (nth 5 (assq (if (consp scheme) (car scheme) scheme) | |
1276 | proced-grammar-alist)))) | |
b4f671ce | 1277 | proced-sort scheme) |
4ed46aef | 1278 | (proced-update)) |
d74d0c42 | 1279 | |
4ed46aef | 1280 | (defun proced-sort-pcpu (&optional arg) |
b4f671ce | 1281 | "Sort Proced buffer by percentage CPU time (%CPU). |
4ed46aef RW |
1282 | Prefix ARG controls sort order, see `proced-sort-interactive'." |
1283 | (interactive (list (or current-prefix-arg 'no-arg))) | |
1284 | (proced-sort-interactive 'pcpu arg)) | |
d74d0c42 | 1285 | |
4ed46aef | 1286 | (defun proced-sort-pmem (&optional arg) |
b4f671ce | 1287 | "Sort Proced buffer by percentage memory usage (%MEM). |
4ed46aef RW |
1288 | Prefix ARG controls sort order, see `proced-sort-interactive'." |
1289 | (interactive (list (or current-prefix-arg 'no-arg))) | |
1290 | (proced-sort-interactive 'pmem arg)) | |
d74d0c42 | 1291 | |
4ed46aef | 1292 | (defun proced-sort-pid (&optional arg) |
b4f671ce | 1293 | "Sort Proced buffer by PID. |
4ed46aef RW |
1294 | Prefix ARG controls sort order, see `proced-sort-interactive'." |
1295 | (interactive (list (or current-prefix-arg 'no-arg))) | |
1296 | (proced-sort-interactive 'pid arg)) | |
d74d0c42 | 1297 | |
4ed46aef | 1298 | (defun proced-sort-start (&optional arg) |
b4f671ce | 1299 | "Sort Proced buffer by time the command started (START). |
4ed46aef RW |
1300 | Prefix ARG controls sort order, see `proced-sort-interactive'." |
1301 | (interactive (list (or current-prefix-arg 'no-arg))) | |
1302 | (proced-sort-interactive 'start arg)) | |
d74d0c42 | 1303 | |
4ed46aef | 1304 | (defun proced-sort-time (&optional arg) |
b4f671ce | 1305 | "Sort Proced buffer by CPU time (TIME). |
4ed46aef RW |
1306 | Prefix ARG controls sort order, see `proced-sort-interactive'." |
1307 | (interactive (list (or current-prefix-arg 'no-arg))) | |
1308 | (proced-sort-interactive 'time arg)) | |
d74d0c42 | 1309 | |
4ed46aef | 1310 | (defun proced-sort-user (&optional arg) |
b4f671ce | 1311 | "Sort Proced buffer by USER. |
4ed46aef RW |
1312 | Prefix ARG controls sort order, see `proced-sort-interactive'." |
1313 | (interactive (list (or current-prefix-arg 'no-arg))) | |
1314 | (proced-sort-interactive 'user arg)) | |
d74d0c42 | 1315 | |
4ed46aef | 1316 | (defun proced-sort-header (event &optional arg) |
d74d0c42 RW |
1317 | "Sort Proced listing based on an attribute. |
1318 | EVENT is a mouse event with starting position in the header line. | |
d0482e4e | 1319 | It is converted to the corresponding attribute key. |
b4f671ce | 1320 | This command updates the variable `proced-sort'. |
4ed46aef RW |
1321 | Prefix ARG controls sort order, see `proced-sort-interactive'." |
1322 | (interactive (list last-input-event (or last-prefix-arg 'no-arg))) | |
d74d0c42 RW |
1323 | (let ((start (event-start event)) |
1324 | col key) | |
1325 | (save-selected-window | |
1326 | (select-window (posn-window start)) | |
aa5fecb5 | 1327 | (setq col (+ (1- (car (posn-actual-col-row start))) |
d74d0c42 RW |
1328 | (window-hscroll))) |
1329 | (when (and (<= 0 col) (< col (length proced-header-line))) | |
1330 | (setq key (get-text-property col 'proced-key proced-header-line)) | |
1331 | (if key | |
4ed46aef | 1332 | (proced-sort-interactive key arg) |
d74d0c42 RW |
1333 | (message "No sorter defined here.")))))) |
1334 | ||
1335 | ;;; Formating | |
1336 | ||
1337 | (defun proced-format-time (time) | |
667df88c | 1338 | "Format time interval TIME." |
d74d0c42 RW |
1339 | (let* ((ftime (float-time time)) |
1340 | (days (truncate ftime 86400)) | |
1341 | (ftime (mod ftime 86400)) | |
1342 | (hours (truncate ftime 3600)) | |
1343 | (ftime (mod ftime 3600)) | |
1344 | (minutes (truncate ftime 60)) | |
1345 | (seconds (mod ftime 60))) | |
1346 | (cond ((< 0 days) | |
1347 | (format "%d-%02d:%02d:%02d" days hours minutes seconds)) | |
1348 | ((< 0 hours) | |
1349 | (format "%02d:%02d:%02d" hours minutes seconds)) | |
1350 | (t | |
1351 | (format "%02d:%02d" minutes seconds))))) | |
1352 | ||
1353 | (defun proced-format-start (start) | |
1354 | "Format time START. | |
1355 | The return string is always 6 characters wide." | |
1356 | (let ((d-start (decode-time start)) | |
1357 | (d-current (decode-time))) | |
1358 | (cond ( ;; process started in previous years | |
1359 | (< (nth 5 d-start) (nth 5 d-current)) | |
1360 | (format-time-string " %Y" start)) | |
1361 | ;; process started today | |
1362 | ((and (= (nth 3 d-start) (nth 3 d-current)) | |
1363 | (= (nth 4 d-start) (nth 4 d-current))) | |
1364 | (format-time-string " %H:%M" start)) | |
1365 | (t ;; process started this year | |
1366 | (format-time-string "%b %e" start))))) | |
1367 | ||
1368 | (defun proced-format-ttname (ttname) | |
da643190 | 1369 | "Format attribute TTNAME, omitting path \"/dev/\"." |
d74d0c42 | 1370 | ;; Does this work for all systems? |
da643190 RW |
1371 | (substring ttname (if (string-match "\\`/dev/" ttname) |
1372 | (match-end 0) 0))) | |
1373 | ||
f1d27653 RW |
1374 | (defun proced-format-tree (tree) |
1375 | "Format attribute TREE." | |
1376 | (concat (make-string tree ?\s) (number-to-string tree))) | |
1377 | ||
b4f671ce | 1378 | ;; Proced assumes that every process occupies only one line in the listing. |
da643190 RW |
1379 | (defun proced-format-args (args) |
1380 | "Format attribute ARGS. | |
1381 | Replace newline characters by \"^J\" (two characters)." | |
1382 | (replace-regexp-in-string "\n" "^J" args)) | |
d74d0c42 RW |
1383 | |
1384 | (defun proced-format (process-alist format) | |
1385 | "Display PROCESS-ALIST using FORMAT." | |
1386 | (if (symbolp format) | |
1387 | (setq format (cdr (assq format proced-format-alist)))) | |
b4f671ce RW |
1388 | |
1389 | ;; Not all systems give us all attributes. We take `emacs-pid' as a | |
1390 | ;; representative process PID. If FORMAT contains a list of alternative | |
1391 | ;; attributes, we take the first attribute that is non-nil for `emacs-pid'. | |
1392 | ;; If none of the alternatives is non-nil, the attribute is ignored | |
1393 | ;; in the listing. | |
1394 | (let ((standard-attributes | |
1395 | (car (proced-process-attributes (list (emacs-pid))))) | |
1396 | new-format fmi) | |
3ac09bb4 RW |
1397 | (if (and proced-tree-flag |
1398 | (assq 'ppid standard-attributes)) | |
1399 | (push (cons 'tree 0) standard-attributes)) | |
b4f671ce RW |
1400 | (dolist (fmt format) |
1401 | (if (symbolp fmt) | |
1402 | (if (assq fmt standard-attributes) | |
1403 | (push fmt new-format)) | |
1404 | (while (setq fmi (pop fmt)) | |
1405 | (when (assq fmi standard-attributes) | |
1406 | (push fmi new-format) | |
1407 | (setq fmt nil))))) | |
1408 | (setq format (nreverse new-format))) | |
1409 | ||
d74d0c42 | 1410 | (insert (make-string (length process-alist) ?\n)) |
b4f671ce RW |
1411 | (let ((whitespace " ") (unknown "?") |
1412 | (sort-key (if (consp proced-sort) (car proced-sort) proced-sort)) | |
1413 | header-list grammar) | |
d74d0c42 | 1414 | ;; Loop over all attributes |
b4f671ce | 1415 | (while (setq grammar (assq (pop format) proced-grammar-alist)) |
d74d0c42 | 1416 | (let* ((key (car grammar)) |
da643190 RW |
1417 | (fun (cond ((stringp (nth 2 grammar)) |
1418 | `(lambda (arg) (format ,(nth 2 grammar) arg))) | |
1419 | ((not (nth 2 grammar)) 'identity) | |
1420 | ( t (nth 2 grammar)))) | |
d74d0c42 RW |
1421 | (whitespace (if format whitespace "")) |
1422 | ;; Text properties: | |
1423 | ;; We use the text property `proced-key' to store in each | |
1424 | ;; field the corresponding key. | |
1425 | ;; Of course, the sort predicate appearing in help-echo | |
1426 | ;; is only part of the story. But it gives the main idea. | |
f1d27653 RW |
1427 | (hprops |
1428 | (if (nth 4 grammar) | |
1429 | (let ((descend (if (eq key sort-key) proced-descend (nth 5 grammar)))) | |
1430 | `(proced-key ,key mouse-face highlight | |
1431 | help-echo ,(format proced-header-help-echo | |
1432 | (if descend "-" "+") | |
1433 | (nth 1 grammar) | |
1434 | (if descend "descending" "ascending")))))) | |
b4f671ce RW |
1435 | (refiner (nth 7 grammar)) |
1436 | (fprops | |
1437 | (cond ((functionp (car refiner)) | |
1438 | `(proced-key ,key mouse-face highlight | |
1439 | help-echo ,(format "mouse-2, RET: %s" | |
3ac09bb4 | 1440 | (nth 1 refiner)))) |
b4f671ce RW |
1441 | ((consp refiner) |
1442 | `(proced-key ,key mouse-face highlight | |
1443 | help-echo ,(format "mouse-2, RET: refine by attribute %s %s" | |
d74d0c42 RW |
1444 | (nth 1 grammar) |
1445 | (mapconcat (lambda (s) | |
1446 | (if s "+" "-")) | |
b4f671ce | 1447 | refiner "")))))) |
d74d0c42 RW |
1448 | value) |
1449 | ||
da643190 | 1450 | ;; highlight the header of the sort column |
b4f671ce | 1451 | (if (eq key sort-key) |
aa5fecb5 | 1452 | (setq hprops (append '(face proced-sort-header) hprops))) |
d74d0c42 RW |
1453 | (goto-char (point-min)) |
1454 | (cond ( ;; fixed width of output field | |
1455 | (numberp (nth 3 grammar)) | |
1456 | (dolist (process process-alist) | |
1457 | (end-of-line) | |
1458 | (setq value (cdr (assq key (cdr process)))) | |
1459 | (insert (if value | |
1460 | (apply 'propertize (funcall fun value) fprops) | |
b4f671ce RW |
1461 | (format (concat "%" (number-to-string (nth 3 grammar)) "s") |
1462 | unknown)) | |
d74d0c42 RW |
1463 | whitespace) |
1464 | (forward-line)) | |
1465 | (push (format (concat "%" (number-to-string (nth 3 grammar)) "s") | |
1466 | (apply 'propertize (nth 1 grammar) hprops)) | |
1467 | header-list)) | |
1468 | ||
1469 | ( ;; last field left-justified | |
1470 | (and (not format) (eq 'left (nth 3 grammar))) | |
1471 | (dolist (process process-alist) | |
1472 | (end-of-line) | |
1473 | (setq value (cdr (assq key (cdr process)))) | |
b4f671ce RW |
1474 | (insert (if value (apply 'propertize (funcall fun value) fprops) |
1475 | unknown)) | |
d74d0c42 RW |
1476 | (forward-line)) |
1477 | (push (apply 'propertize (nth 1 grammar) hprops) header-list)) | |
1478 | ||
1479 | (t ;; calculated field width | |
1480 | (let ((width (length (nth 1 grammar))) | |
1481 | field-list value) | |
1482 | (dolist (process process-alist) | |
1483 | (setq value (cdr (assq key (cdr process)))) | |
1484 | (if value | |
1485 | (setq value (apply 'propertize (funcall fun value) fprops) | |
1486 | width (max width (length value)) | |
1487 | field-list (cons value field-list)) | |
b4f671ce RW |
1488 | (push unknown field-list) |
1489 | (setq width (max width (length unknown))))) | |
d74d0c42 RW |
1490 | (let ((afmt (concat "%" (if (eq 'left (nth 3 grammar)) "-" "") |
1491 | (number-to-string width) "s"))) | |
1492 | (push (format afmt (apply 'propertize (nth 1 grammar) hprops)) | |
1493 | header-list) | |
1494 | (dolist (value (nreverse field-list)) | |
1495 | (end-of-line) | |
1496 | (insert (format afmt value) whitespace) | |
1497 | (forward-line)))))))) | |
1498 | ||
1499 | ;; final cleanup | |
1500 | (goto-char (point-min)) | |
1501 | (dolist (process process-alist) | |
1502 | ;; We use the text property `proced-pid' to store in each line | |
1503 | ;; the corresponding pid | |
1504 | (put-text-property (point) (line-end-position) 'proced-pid (car process)) | |
1505 | (forward-line)) | |
1506 | ;; Set header line | |
1507 | (setq proced-header-line | |
1508 | (mapconcat 'identity (nreverse header-list) whitespace)) | |
1509 | (if (string-match "[ \t]+$" proced-header-line) | |
1510 | (setq proced-header-line (substring proced-header-line 0 | |
1511 | (match-beginning 0)))) | |
1512 | ;; (delete-trailing-whitespace) | |
1513 | (goto-char (point-min)) | |
1514 | (while (re-search-forward "[ \t\r]+$" nil t) | |
1515 | (delete-region (match-beginning 0) (match-end 0))))) | |
b9df5969 | 1516 | |
d74d0c42 RW |
1517 | (defun proced-format-interactive (scheme &optional revert) |
1518 | "Format Proced buffer using SCHEME. | |
1519 | When called interactively, an empty string means nil, i.e., no formatting. | |
da643190 | 1520 | Set variable `proced-format' to SCHEME. |
d74d0c42 RW |
1521 | With prefix REVERT non-nil revert listing." |
1522 | (interactive | |
1523 | (let ((scheme (completing-read "Format: " | |
1524 | proced-format-alist nil t))) | |
1525 | (list (if (string= "" scheme) nil (intern scheme)) | |
1526 | current-prefix-arg))) | |
aa5fecb5 RW |
1527 | ;; only update if necessary |
1528 | (when (or (not (eq proced-format scheme)) revert) | |
1529 | (setq proced-format scheme) | |
1530 | (proced-update revert))) | |
d74d0c42 RW |
1531 | |
1532 | ;; generate listing | |
1533 | ||
b4f671ce | 1534 | (defun proced-process-attributes (&optional pid-list) |
d74d0c42 | 1535 | "Return alist of attributes for each system process. |
b4f671ce RW |
1536 | This alist can be customized via `proced-custom-attributes'. |
1537 | Optional arg PID-LIST is a list of PIDs of system process that are analyzed. | |
1538 | If no attributes are known for a process (possibly because it already died) | |
1539 | the process is ignored." | |
1540 | ;; Should we make it customizable whether processes with empty attribute | |
1541 | ;; lists are ignored? When would such processes be of interest? | |
3ac09bb4 | 1542 | (let (process-alist attributes attr) |
b4f671ce | 1543 | (dolist (pid (or pid-list (list-system-processes)) process-alist) |
a20878b6 | 1544 | (when (setq attributes (process-attributes pid)) |
3ac09bb4 RW |
1545 | (setq attributes (cons (cons 'pid pid) attributes)) |
1546 | (dolist (fun proced-custom-attributes) | |
1547 | (if (setq attr (funcall fun attributes)) | |
1548 | (push attr attributes))) | |
1549 | (push (cons pid attributes) process-alist))))) | |
d74d0c42 RW |
1550 | |
1551 | (defun proced-update (&optional revert quiet) | |
d0482e4e | 1552 | "Update the Proced process information. Preserves point and marks. |
d74d0c42 | 1553 | With prefix REVERT non-nil, revert listing. |
3ac09bb4 RW |
1554 | Suppress status information if QUIET is nil. |
1555 | After updating a displayed Proced buffer run the normal hook | |
1556 | `proced-post-display-hook'." | |
e6854b3f | 1557 | ;; This is the main function that generates and updates the process listing. |
d74d0c42 RW |
1558 | (interactive "P") |
1559 | (setq revert (or revert (not proced-process-alist))) | |
1560 | (or quiet (message (if revert "Updating process information..." | |
1561 | "Updating process display..."))) | |
da643190 RW |
1562 | (if revert ;; evaluate all processes |
1563 | (setq proced-process-alist (proced-process-attributes))) | |
1564 | ;; filtering and sorting | |
1565 | (setq proced-process-alist | |
b4f671ce RW |
1566 | (proced-sort (proced-filter proced-process-alist proced-filter) |
1567 | proced-sort proced-descend)) | |
da643190 | 1568 | |
f1d27653 RW |
1569 | ;; display as process tree? |
1570 | (setq proced-process-alist | |
1571 | (proced-tree proced-process-alist)) | |
1572 | ||
da643190 RW |
1573 | ;; It is useless to keep undo information if we revert, filter, or |
1574 | ;; refine the listing so that `proced-process-alist' has changed. | |
1575 | ;; We could keep the undo information if we only re-sort the buffer. | |
1576 | ;; Would that be useful? Re-re-sorting is easy, too. | |
1577 | (if (consp buffer-undo-list) | |
1578 | (setq buffer-undo-list nil)) | |
1579 | (let ((buffer-undo-list t) | |
1580 | ;; If point is on a field, we try to return point to that field. | |
1581 | ;; Otherwise we try to return to the same column | |
1582 | (old-pos (let ((pid (proced-pid-at-point)) | |
1583 | (key (get-text-property (point) 'proced-key))) | |
1584 | (list pid key ; can both be nil | |
d74d0c42 RW |
1585 | (if key |
1586 | (if (get-text-property (1- (point)) 'proced-key) | |
1587 | (- (point) (previous-single-property-change | |
1588 | (point) 'proced-key)) | |
1589 | 0) | |
1590 | (current-column))))) | |
1591 | buffer-read-only mp-list) | |
37e4d8ed | 1592 | ;; remember marked processes (whatever the mark was) |
d74d0c42 RW |
1593 | (goto-char (point-min)) |
1594 | (while (re-search-forward "^\\(\\S-\\)" nil t) | |
1595 | (push (cons (save-match-data (proced-pid-at-point)) | |
92d9ce48 | 1596 | (match-string-no-properties 1)) mp-list)) |
da643190 | 1597 | |
d74d0c42 | 1598 | ;; generate listing |
37e4d8ed | 1599 | (erase-buffer) |
d74d0c42 | 1600 | (proced-format proced-process-alist proced-format) |
37e4d8ed RW |
1601 | (goto-char (point-min)) |
1602 | (while (not (eobp)) | |
1603 | (insert " ") | |
1604 | (forward-line)) | |
8ca42262 | 1605 | (setq proced-header-line (concat " " proced-header-line)) |
d74d0c42 | 1606 | (if revert (set-buffer-modified-p nil)) |
da643190 | 1607 | |
d74d0c42 RW |
1608 | ;; set `goal-column' |
1609 | (let ((grammar (assq proced-goal-attribute proced-grammar-alist))) | |
1610 | (setq goal-column ;; set to nil if no match | |
1611 | (if (and grammar | |
1612 | (not (zerop (buffer-size))) | |
1613 | (string-match (regexp-quote (nth 1 grammar)) | |
1614 | proced-header-line)) | |
1615 | (if (nth 3 grammar) | |
1616 | (match-beginning 0) | |
1617 | (match-end 0))))) | |
da643190 | 1618 | |
204ebc5b RW |
1619 | ;; Restore process marks and buffer position (if possible). |
1620 | ;; Sometimes this puts point in the middle of the proced buffer | |
da643190 | 1621 | ;; where it is not interesting. Is there a better / more flexible solution? |
92d9ce48 | 1622 | (goto-char (point-min)) |
da643190 RW |
1623 | (let (pid mark new-pos) |
1624 | (if (or mp-list (car old-pos)) | |
d74d0c42 RW |
1625 | (while (not (eobp)) |
1626 | (setq pid (proced-pid-at-point)) | |
1627 | (when (setq mark (assq pid mp-list)) | |
1628 | (insert (cdr mark)) | |
1629 | (delete-char 1) | |
1630 | (beginning-of-line)) | |
1631 | (when (eq (car old-pos) pid) | |
1632 | (if (nth 1 old-pos) | |
1633 | (let ((limit (line-end-position)) pos) | |
1634 | (while (and (not new-pos) | |
1635 | (setq pos (next-property-change (point) nil limit))) | |
1636 | (goto-char pos) | |
1637 | (when (eq (nth 1 old-pos) | |
1638 | (get-text-property (point) 'proced-key)) | |
1639 | (forward-char (min (nth 2 old-pos) | |
1640 | (- (next-property-change (point)) | |
1641 | (point)))) | |
1642 | (setq new-pos (point)))) | |
1643 | (unless new-pos | |
da643190 RW |
1644 | ;; we found the process, but the field of point |
1645 | ;; is not listed anymore | |
1646 | (setq new-pos (proced-move-to-goal-column)))) | |
d74d0c42 RW |
1647 | (setq new-pos (min (+ (line-beginning-position) (nth 2 old-pos)) |
1648 | (line-end-position))))) | |
da643190 RW |
1649 | (forward-line))) |
1650 | (if new-pos | |
1651 | (goto-char new-pos) | |
1652 | (goto-char (point-min)) | |
1653 | (proced-move-to-goal-column))) | |
61548252 | 1654 | ;; update modeline |
da643190 RW |
1655 | ;; Does the long `mode-name' clutter the modeline? It would be nice |
1656 | ;; to have some other location for displaying the values of the various | |
1657 | ;; flags that affect the behavior of proced (flags one might want | |
1658 | ;; to change on the fly). Where?? | |
d74d0c42 RW |
1659 | (setq mode-name |
1660 | (concat "Proced" | |
1661 | (if proced-filter | |
1662 | (concat ": " (symbol-name proced-filter)) | |
1663 | "") | |
1664 | (if proced-sort | |
b4f671ce | 1665 | (let* ((key (if (consp proced-sort) (car proced-sort) |
d74d0c42 RW |
1666 | proced-sort)) |
1667 | (grammar (assq key proced-grammar-alist))) | |
b4f671ce | 1668 | (concat " by " (if proced-descend "-" "+") |
d74d0c42 RW |
1669 | (nth 1 grammar))) |
1670 | ""))) | |
61548252 | 1671 | (force-mode-line-update) |
3ac09bb4 RW |
1672 | ;; run `proced-post-display-hook' only for a displayed buffer. |
1673 | (if (get-buffer-window) (run-hooks 'proced-post-display-hook)) | |
61548252 | 1674 | ;; done |
37e4d8ed | 1675 | (or quiet (input-pending-p) |
d74d0c42 RW |
1676 | (message (if revert "Updating process information...done." |
1677 | "Updating process display...done."))))) | |
37e4d8ed | 1678 | |
06b60517 | 1679 | (defun proced-revert (&rest _args) |
4ed46aef RW |
1680 | "Reevaluate the process listing based on the currently running processes. |
1681 | Preserves point and marks." | |
d74d0c42 | 1682 | (proced-update t)) |
37e4d8ed | 1683 | |
37e4d8ed RW |
1684 | (defun proced-send-signal (&optional signal) |
1685 | "Send a SIGNAL to the marked processes. | |
9f583d14 | 1686 | If no process is marked, operate on current process. |
37e4d8ed | 1687 | SIGNAL may be a string (HUP, INT, TERM, etc.) or a number. |
3ac09bb4 RW |
1688 | If SIGNAL is nil display marked processes and query interactively for SIGNAL. |
1689 | After sending the signal, this command runs the normal hook | |
1690 | `proced-after-send-signal-hook'." | |
37e4d8ed | 1691 | (interactive) |
d74d0c42 RW |
1692 | (let ((regexp (proced-marker-regexp)) |
1693 | process-alist) | |
37e4d8ed RW |
1694 | ;; collect marked processes |
1695 | (save-excursion | |
1696 | (goto-char (point-min)) | |
1697 | (while (re-search-forward regexp nil t) | |
d74d0c42 RW |
1698 | (push (cons (proced-pid-at-point) |
1699 | ;; How much info should we collect here? | |
3ac09bb4 RW |
1700 | (buffer-substring-no-properties |
1701 | (+ 2 (line-beginning-position)) | |
1702 | (line-end-position))) | |
d74d0c42 RW |
1703 | process-alist))) |
1704 | (setq process-alist | |
1705 | (if process-alist | |
1706 | (nreverse process-alist) | |
9f583d14 | 1707 | ;; take current process |
d74d0c42 RW |
1708 | (list (cons (proced-pid-at-point) |
1709 | (buffer-substring-no-properties | |
1710 | (+ 2 (line-beginning-position)) | |
1711 | (line-end-position)))))) | |
9f583d14 RW |
1712 | (unless signal |
1713 | ;; Display marked processes (code taken from `dired-mark-pop-up'). | |
8b78760b JL |
1714 | (let ((bufname " *Marked Processes*") ; use leading space in buffer name |
1715 | ; to make this buffer ephemeral | |
d74d0c42 | 1716 | (header-line (substring-no-properties proced-header-line))) |
9f583d14 RW |
1717 | (with-current-buffer (get-buffer-create bufname) |
1718 | (setq truncate-lines t | |
d74d0c42 | 1719 | proced-header-line header-line ; inherit header line |
9f583d14 RW |
1720 | header-line-format '(:eval (proced-header-line))) |
1721 | (add-hook 'post-command-hook 'force-mode-line-update nil t) | |
9a9af856 SM |
1722 | (let ((inhibit-read-only t)) |
1723 | (erase-buffer) | |
1724 | (buffer-disable-undo) | |
1725 | (setq buffer-read-only t) | |
1726 | (dolist (process process-alist) | |
5db2afd2 RW |
1727 | (insert " " (cdr process) "\n")) |
1728 | (delete-char -1) | |
1729 | (goto-char (point-min))) | |
9f583d14 | 1730 | (save-window-excursion |
016151bb RW |
1731 | ;; Analogous to `dired-pop-to-buffer' |
1732 | ;; Don't split window horizontally. (Bug#1806) | |
1733 | (let (split-width-threshold) | |
1734 | (pop-to-buffer (current-buffer))) | |
3ac09bb4 | 1735 | (fit-window-to-buffer (get-buffer-window) nil 1) |
9f583d14 | 1736 | (let* ((completion-ignore-case t) |
d74d0c42 | 1737 | (pnum (if (= 1 (length process-alist)) |
9f583d14 | 1738 | "1 process" |
d74d0c42 | 1739 | (format "%d processes" (length process-alist)))) |
2403c841 SM |
1740 | (completion-extra-properties |
1741 | '(:annotation-function | |
1742 | (lambda (s) (cdr (assoc s proced-signal-list)))))) | |
9a9af856 SM |
1743 | (setq signal |
1744 | (completing-read (concat "Send signal [" pnum | |
1745 | "] (default TERM): ") | |
1746 | proced-signal-list | |
1747 | nil nil nil nil "TERM"))))))) | |
f67cf064 RW |
1748 | ;; send signal |
1749 | (let ((count 0) | |
1750 | failures) | |
1751 | ;; Why not always use `signal-process'? See | |
1752 | ;; http://lists.gnu.org/archive/html/emacs-devel/2008-03/msg02955.html | |
1753 | (if (functionp proced-signal-function) | |
1754 | ;; use built-in `signal-process' | |
1755 | (let ((signal (if (stringp signal) | |
1756 | (if (string-match "\\`[0-9]+\\'" signal) | |
1757 | (string-to-number signal) | |
1758 | (make-symbol signal)) | |
1759 | signal))) ; number | |
d74d0c42 | 1760 | (dolist (process process-alist) |
f67cf064 RW |
1761 | (condition-case err |
1762 | (if (zerop (funcall | |
1763 | proced-signal-function (car process) signal)) | |
1764 | (setq count (1+ count)) | |
1765 | (proced-log "%s\n" (cdr process)) | |
1766 | (push (cdr process) failures)) | |
1767 | (error ; catch errors from failed signals | |
1768 | (proced-log "%s\n" err) | |
1769 | (proced-log "%s\n" (cdr process)) | |
1770 | (push (cdr process) failures))))) | |
1771 | ;; use external system call | |
1772 | (let ((signal (concat "-" (if (numberp signal) | |
1773 | (number-to-string signal) signal)))) | |
1774 | (dolist (process process-alist) | |
1775 | (with-temp-buffer | |
06b60517 | 1776 | (condition-case nil |
f67cf064 RW |
1777 | (if (zerop (call-process |
1778 | proced-signal-function nil t nil | |
1779 | signal (number-to-string (car process)))) | |
1780 | (setq count (1+ count)) | |
1781 | (proced-log (current-buffer)) | |
1782 | (proced-log "%s\n" (cdr process)) | |
1783 | (push (cdr process) failures)) | |
1784 | (error ; catch errors from failed signals | |
1785 | (proced-log (current-buffer)) | |
1786 | (proced-log "%s\n" (cdr process)) | |
1787 | (push (cdr process) failures))))))) | |
1788 | (if failures | |
1789 | ;; Proced error message are not always very precise. | |
1790 | ;; Can we issue a useful one-line summary in the | |
1791 | ;; message area (using FAILURES) if only one signal failed? | |
1792 | (proced-log-summary | |
1793 | signal | |
1794 | (format "%d of %d signal%s failed" | |
1795 | (length failures) (length process-alist) | |
1796 | (if (= 1 (length process-alist)) "" "s"))) | |
1797 | (proced-success-message "Sent signal to" count))) | |
1798 | ;; final clean-up | |
1799 | (run-hooks 'proced-after-send-signal-hook))) | |
9f583d14 | 1800 | |
d74d0c42 | 1801 | ;; similar to `dired-why' |
9f583d14 RW |
1802 | (defun proced-why () |
1803 | "Pop up a buffer with error log output from Proced. | |
1804 | A group of errors from a single command ends with a formfeed. | |
1805 | Thus, use \\[backward-page] to find the beginning of a group of errors." | |
1806 | (interactive) | |
1807 | (if (get-buffer proced-log-buffer) | |
d74d0c42 RW |
1808 | (save-selected-window |
1809 | ;; move `proced-log-buffer' to the front of the buffer list | |
1810 | (select-window (display-buffer (get-buffer proced-log-buffer))) | |
1811 | (setq truncate-lines t) | |
1812 | (set-buffer-modified-p nil) | |
1813 | (setq buffer-read-only t) | |
1814 | (goto-char (point-max)) | |
1815 | (forward-line -1) | |
1816 | (backward-page 1) | |
1817 | (recenter 0)))) | |
9f583d14 RW |
1818 | |
1819 | ;; similar to `dired-log' | |
1820 | (defun proced-log (log &rest args) | |
1821 | "Log a message or the contents of a buffer. | |
1822 | If LOG is a string and there are more args, it is formatted with | |
1823 | those ARGS. Usually the LOG string ends with a \\n. | |
1824 | End each bunch of errors with (proced-log t signal): | |
1825 | this inserts the current time, buffer and signal at the start of the page, | |
1826 | and \f (formfeed) at the end." | |
1827 | (let ((obuf (current-buffer))) | |
1828 | (with-current-buffer (get-buffer-create proced-log-buffer) | |
1829 | (goto-char (point-max)) | |
d74d0c42 | 1830 | (let (buffer-read-only) |
9f583d14 RW |
1831 | (cond ((stringp log) |
1832 | (insert (if args | |
1833 | (apply 'format log args) | |
1834 | log))) | |
1835 | ((bufferp log) | |
1836 | (insert-buffer-substring log)) | |
1837 | ((eq t log) | |
1838 | (backward-page 1) | |
1839 | (unless (bolp) | |
1840 | (insert "\n")) | |
1841 | (insert (current-time-string) | |
1842 | "\tBuffer `" (buffer-name obuf) "', " | |
1843 | (format "signal `%s'\n" (car args))) | |
1844 | (goto-char (point-max)) | |
1845 | (insert "\f\n"))))))) | |
1846 | ||
1847 | ;; similar to `dired-log-summary' | |
1848 | (defun proced-log-summary (signal string) | |
1849 | "State a summary of SIGNAL's failures, in echo area and log buffer. | |
1850 | STRING is an overall summary of the failures." | |
1851 | (message "Signal %s: %s--type ? for details" signal string) | |
1852 | ;; Log a summary describing a bunch of errors. | |
1853 | (proced-log (concat "\n" string "\n")) | |
1854 | (proced-log t signal)) | |
37e4d8ed RW |
1855 | |
1856 | (defun proced-help () | |
d0482e4e | 1857 | "Provide help for the Proced user." |
37e4d8ed | 1858 | (interactive) |
9f583d14 | 1859 | (proced-why) |
37e4d8ed RW |
1860 | (if (eq last-command 'proced-help) |
1861 | (describe-mode) | |
1862 | (message proced-help-string))) | |
1863 | ||
1864 | (defun proced-undo () | |
d0482e4e JB |
1865 | "Undo in a Proced buffer. |
1866 | This doesn't recover killed processes, it just undoes changes in the Proced | |
37e4d8ed RW |
1867 | buffer. You can use it to recover marks." |
1868 | (interactive) | |
1869 | (let (buffer-read-only) | |
1870 | (undo)) | |
92d9ce48 | 1871 | (message "Change in Proced buffer undone. |
37e4d8ed RW |
1872 | Killed processes cannot be recovered by Emacs.")) |
1873 | ||
1874 | (provide 'proced) | |
1875 | ||
9f583d14 | 1876 | ;;; proced.el ends here |