forked from emacs-helm/helm
-
Notifications
You must be signed in to change notification settings - Fork 0
/
helm-sys.el
462 lines (400 loc) · 17 KB
/
helm-sys.el
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
;;; helm-sys.el --- System related functions for helm. -*- lexical-binding: t -*-
;; Copyright (C) 2012 ~ 2019 Thierry Volpiatto <[email protected]>
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;;; Code:
(require 'cl-lib)
(require 'helm)
(require 'helm-help)
(require 'helm-utils)
(defgroup helm-sys nil
"System related helm library."
:group 'helm)
(defface helm-top-columns
`((t ,@(and (>= emacs-major-version 27) '(:extend t))
:inherit helm-header))
"Face for helm help string in minibuffer."
:group 'helm-sys)
(defcustom helm-top-command
(cl-case system-type
(darwin "env COLUMNS=%s ps -axo pid,user,pri,nice,ucomm,tty,start_time,vsz,%%cpu,%%mem,etime,command")
(t "env COLUMNS=%s top -b -n 1"))
"Top command used to display output of top.
A format string where %s will be replaced with `frame-width'.
To use 'top' command, a version supporting batch mode (-b option)
is needed. On Mac OSX 'top' command doesn't support this, so the
'ps' command is used instead by default.
Normally 'top' command output have 12 columns, but in some
versions you may have less than this, so you can either customize
top to use 12 columns with the interactives 'f' and 'W' commands
of top, or modify `helm-top-sort-columns-alist' to fit with the
number of columns your 'top' command is using.
If you modify 'ps' command be sure that 'pid' comes in first and
\"env COLUMNS=%s\" is specified at beginning of command. Ensure
also that no elements contain spaces (e.g., use start_time and
not start). Same as for 'top': you can customize
`helm-top-sort-columns-alist' to make sort commands working
properly according to your settings."
:group 'helm-sys
:type 'string)
(defcustom helm-top-sort-columns-alist '((com . 11)
(mem . 9)
(cpu . 8)
(user . 1))
"Allow defining which column to use when sorting output of top/ps command.
Only com, mem, cpu and user are sorted, so no need to put something else there,
it will have no effect.
Note that column numbers are counted from zero, i.e. column 1 is the nth 0 column."
:group 'helm-sys
:type '(alist :key-type symbol :value-type (integer :tag "Column number")))
(defcustom helm-top-poll-delay 1.5
"Helm top poll after this delay when `helm-top-poll-mode' is enabled.
The minimal delay allowed is 1.5, if less than this helm-top will use 1.5."
:group 'helm-sys
:type 'float)
(defcustom helm-top-poll-delay-post-command 1.0
"Helm top stop polling during this delay.
This delay is added to `helm-top-poll-delay' after Emacs stops
being idle."
:group 'helm-sys
:type 'float)
(defcustom helm-top-poll-preselection 'linum
"Stay on same line or follow candidate when `helm-top-poll' updates display.
Possible values are 'candidate or 'linum.
This affects also sorting functions in the same way."
:group'helm-sys
:type '(radio :tag "Preferred preselection action for helm-top"
(const :tag "Follow candidate" candidate)
(const :tag "Stay on same line" linum)))
;;; Top (process)
;;
;;
(defvar helm-top-sort-fn nil)
(defvar helm-top-map
(let ((map (make-sparse-keymap)))
(set-keymap-parent map helm-map)
(define-key map (kbd "M-P") 'helm-top-run-sort-by-cpu)
(define-key map (kbd "M-C") 'helm-top-run-sort-by-com)
(define-key map (kbd "M-M") 'helm-top-run-sort-by-mem)
(define-key map (kbd "M-U") 'helm-top-run-sort-by-user)
map))
(defvar helm-top-after-init-hook nil
"Local hook for helm-top.")
(defvar helm-top--poll-timer nil)
(defun helm-top-poll (&optional no-update delay)
(when helm-top--poll-timer
(cancel-timer helm-top--poll-timer))
(condition-case nil
(progn
(when (and (helm--alive-p) (null no-update))
;; Fix quitting while process is running
;; by binding `with-local-quit' in init function
;; Issue #1521.
(helm-force-update
(cl-ecase helm-top-poll-preselection
(candidate (replace-regexp-in-string
"[0-9]+" "[0-9]+"
(regexp-quote (helm-get-selection nil t))))
(linum `(lambda ()
(goto-char (point-min))
(forward-line ,(helm-candidate-number-at-point)))))))
(setq helm-top--poll-timer
(run-with-idle-timer
(helm-aif (current-idle-time)
(time-add it (seconds-to-time
(or delay (helm-top--poll-delay))))
(or delay (helm-top--poll-delay)))
nil
'helm-top-poll)))
(quit (cancel-timer helm-top--poll-timer))))
(defun helm-top--poll-delay ()
(max 1.5 helm-top-poll-delay))
(defun helm-top-poll-no-update ()
(helm-top-poll t (+ (helm-top--poll-delay)
helm-top-poll-delay-post-command)))
(defun helm-top-initialize-poll-hooks ()
;; When Emacs is idle during say 20s
;; the idle timer will run in 20+1.5 s.
;; This is fine when Emacs stays idle, because the next timer
;; will run at 21.5+1.5 etc... so the display will be updated
;; at every 1.5 seconds.
;; But as soon as emacs looses its idleness, the next update
;; will occur at say 21+1.5 s, so we have to reinitialize
;; the timer at 0+1.5.
(add-hook 'post-command-hook 'helm-top-poll-no-update)
(add-hook 'focus-in-hook 'helm-top-poll-no-update))
;;;###autoload
(define-minor-mode helm-top-poll-mode
"Refresh automatically helm top buffer once enabled."
:group 'helm-top
:global t
(if helm-top-poll-mode
(progn
(add-hook 'helm-top-after-init-hook 'helm-top-poll-no-update)
(add-hook 'helm-top-after-init-hook 'helm-top-initialize-poll-hooks))
(remove-hook 'helm-top-after-init-hook 'helm-top-poll-no-update)
(remove-hook 'helm-top-after-init-hook 'helm-top-initialize-poll-hooks)))
(defvar helm-source-top
(helm-build-in-buffer-source "Top"
:header-name (lambda (name)
(concat name (if helm-top-poll-mode
" (auto updating)"
" (Press C-c C-u to refresh)")))
:init #'helm-top-init
:after-init-hook 'helm-top-after-init-hook
:cleanup (lambda ()
(when helm-top--poll-timer
(cancel-timer helm-top--poll-timer))
(remove-hook 'post-command-hook 'helm-top-poll-no-update)
(remove-hook 'focus-in-hook 'helm-top-poll-no-update))
:display-to-real #'helm-top-display-to-real
:persistent-action '(helm-top-sh-persistent-action . never-split)
:persistent-help "SIGTERM"
:help-message 'helm-top-help-message
:mode-line 'helm-top-mode-line
:follow 'never
:keymap helm-top-map
:filtered-candidate-transformer #'helm-top-sort-transformer
:action-transformer #'helm-top-action-transformer
:group 'helm-sys))
(defvar helm-top--line nil)
(defun helm-top-transformer (candidates _source)
"Transformer for `helm-top'.
Return empty string for non--valid candidates."
(cl-loop for disp in candidates collect
(cond ((string-match "^ *[0-9]+" disp) disp)
((string-match "^ *PID" disp)
(setq helm-top--line (cons (propertize disp 'face 'helm-top-columns) "")))
(t (cons disp "")))
into lst
finally return (or (member helm-top--line lst)
(cons helm-top--line lst))))
(defun helm-top--skip-top-line ()
(let* ((src (helm-get-current-source))
(src-name (assoc-default 'name src)))
(helm-aif (and (stringp src-name)
(string= src-name "Top")
(helm-get-selection nil t src))
(when (string-match-p "^ *PID" it)
(helm-next-line)))))
(defun helm-top-action-transformer (actions _candidate)
"Action transformer for `top'.
Show actions only on line starting by a PID."
(let ((disp (helm-get-selection nil t)))
(cond ((string-match "\\` *[0-9]+" disp)
(list '("kill (SIGTERM)" . (lambda (_pid)
(helm-top-sh "TERM" (helm-top--marked-pids))))
'("kill (SIGKILL)" . (lambda (_pid)
(helm-top-sh "KILL" (helm-top--marked-pids))))
'("kill (SIGINT)" . (lambda (_pid)
(helm-top-sh "INT" (helm-top--marked-pids))))
'("kill (Choose signal)"
. (lambda (_pid)
(let ((pids (helm-top--marked-pids)))
(helm-top-sh
(helm-comp-read (format "Kill %d pids with signal: "
(length pids))
'("ALRM" "HUP" "INT" "KILL" "PIPE" "POLL"
"PROF" "TERM" "USR1" "USR2" "VTALRM"
"STKFLT" "PWR" "WINCH" "CHLD" "URG"
"TSTP" "TTIN" "TTOU" "STOP" "CONT"
"ABRT" "FPE" "ILL" "QUIT" "SEGV"
"TRAP" "SYS" "EMT" "BUS" "XCPU" "XFSZ")
:must-match t)
pids))))))
(t actions))))
(defun helm-top--marked-pids ()
(helm-remove-if-not-match "\\`[0-9]+\\'" (helm-marked-candidates)))
(defun helm-top-sh (sig pids)
"Run kill shell command with signal SIG on PIDS for `helm-top'."
(message "kill -%s %s exited with status %s"
sig (mapconcat 'identity pids " ")
(apply #'call-process
"kill" nil nil nil (format "-%s" sig) pids)))
(defun helm-top-sh-persistent-action (pid)
(helm-top-sh "TERM" (list pid))
(helm-delete-current-selection))
(defun helm-top-init ()
"Insert output of top command in candidate buffer."
(with-local-quit
(unless helm-top-sort-fn (helm-top-set-mode-line "CPU"))
(with-current-buffer (helm-candidate-buffer 'global)
(call-process-shell-command
(format helm-top-command (frame-width))
nil (current-buffer)))))
(defun helm-top-display-to-real (line)
"Return pid only from LINE."
(car (split-string line)))
;; Sort top command
(defun helm-top-set-mode-line (str)
(if (string-match "Sort:\\[\\(.*\\)\\] " helm-top-mode-line)
(setq helm-top-mode-line (replace-match str nil nil helm-top-mode-line 1))
(setq helm-top-mode-line (concat (format "Sort:[%s] " str) helm-top-mode-line))))
(defun helm-top-sort-transformer (candidates source)
(helm-top-transformer
(if helm-top-sort-fn
(cl-loop for c in candidates
if (string-match "^ *[0-9]+" c)
collect c into pid-cands
else collect c into header-cands
finally return (append
header-cands
(sort pid-cands helm-top-sort-fn)))
candidates)
source))
(defun helm-top-sort-by-com (s1 s2)
(let* ((split-1 (split-string s1))
(split-2 (split-string s2))
(col (cdr (assq 'com helm-top-sort-columns-alist)))
(com-1 (nth col split-1))
(com-2 (nth col split-2)))
(string< com-1 com-2)))
(defun helm-top-sort-by-mem (s1 s2)
(let* ((split-1 (split-string s1))
(split-2 (split-string s2))
(col (cdr (assq 'mem helm-top-sort-columns-alist)))
(mem-1 (string-to-number (nth col split-1)))
(mem-2 (string-to-number (nth col split-2))))
(> mem-1 mem-2)))
(defun helm-top-sort-by-cpu (s1 s2)
(let* ((split-1 (split-string s1))
(split-2 (split-string s2))
(col (cdr (assq 'cpu helm-top-sort-columns-alist)))
(cpu-1 (string-to-number (nth col split-1)))
(cpu-2 (string-to-number (nth col split-2))))
(> cpu-1 cpu-2)))
(defun helm-top-sort-by-user (s1 s2)
(let* ((split-1 (split-string s1))
(split-2 (split-string s2))
(col (cdr (assq 'user helm-top-sort-columns-alist)))
(user-1 (nth col split-1))
(user-2 (nth col split-2)))
(string< user-1 user-2)))
(defun helm-top--preselect-fn ()
(if (eq helm-top-poll-preselection 'linum)
`(lambda ()
(goto-char (point-min))
(forward-line ,(helm-candidate-number-at-point)))
(replace-regexp-in-string
"[0-9]+" "[0-9]+"
(regexp-quote (helm-get-selection nil t)))))
(defun helm-top-run-sort-by-com ()
(interactive)
(helm-top-set-mode-line "COM")
(setq helm-top-sort-fn 'helm-top-sort-by-com)
(helm-update (helm-top--preselect-fn)))
(defun helm-top-run-sort-by-cpu ()
(interactive)
(helm-top-set-mode-line "CPU")
;; Force sorting by CPU even if some versions of top are using by
;; default CPU sorting (Issue #1908).
(setq helm-top-sort-fn 'helm-top-sort-by-cpu)
(helm-update (helm-top--preselect-fn)))
(defun helm-top-run-sort-by-mem ()
(interactive)
(helm-top-set-mode-line "MEM")
(setq helm-top-sort-fn 'helm-top-sort-by-mem)
(helm-update (helm-top--preselect-fn)))
(defun helm-top-run-sort-by-user ()
(interactive)
(helm-top-set-mode-line "USER")
(setq helm-top-sort-fn 'helm-top-sort-by-user)
(helm-update (helm-top--preselect-fn)))
;;; X RandR resolution change
;;
;;
;;; FIXME I do not care multi-display.
(defun helm-xrandr-info ()
"Return a pair with current X screen number and current X display name."
(with-temp-buffer
(call-process "xrandr" nil (current-buffer) nil
"--current")
(let (screen output)
(goto-char (point-min))
(save-excursion
(when (re-search-forward "\\(^Screen \\)\\([0-9]\\):" nil t)
(setq screen (match-string 2))))
(when (re-search-forward "^\\(.*\\) connected" nil t)
(setq output (match-string 1)))
(list screen output))))
(defun helm-xrandr-screen ()
"Return current X screen number."
(car (helm-xrandr-info)))
(defun helm-xrandr-output ()
"Return current X display name."
(cadr (helm-xrandr-info)))
(defvar helm-source-xrandr-change-resolution
(helm-build-sync-source "Change Resolution"
:candidates
(lambda ()
(with-temp-buffer
(call-process "xrandr" nil (current-buffer) nil
"--screen" (helm-xrandr-screen) "-q")
(goto-char 1)
(cl-loop while (re-search-forward " \\([0-9]+x[0-9]+\\)" nil t)
for mode = (match-string 1)
unless (member mode modes)
collect mode into modes
finally return modes)))
:action
(helm-make-actions "Change Resolution"
(lambda (mode)
(call-process "xrandr" nil nil nil
"--screen" (helm-xrandr-screen)
"--output" (helm-xrandr-output)
"--mode" mode)))))
;;; Emacs process
;;
;;
(defvar helm-source-emacs-process
(helm-build-sync-source "Emacs Process"
:init (lambda ()
(let (tabulated-list-use-header-line)
(list-processes--refresh)))
:candidates (lambda () (mapcar #'process-name (process-list)))
:persistent-action (lambda (elm)
(delete-process (get-process elm))
(helm-delete-current-selection))
:persistent-help "Kill Process"
:action (helm-make-actions "Kill Process"
(lambda (_elm)
(cl-loop for p in (helm-marked-candidates)
do (delete-process (get-process p)))))))
;;;###autoload
(defun helm-top ()
"Preconfigured `helm' for top command."
(interactive)
(add-hook 'helm-after-update-hook 'helm-top--skip-top-line)
(unwind-protect
(helm :sources 'helm-source-top
:buffer "*helm top*" :full-frame t
:candidate-number-limit 9999
:preselect "^\\s-*[0-9]+"
:truncate-lines helm-show-action-window-other-window)
(remove-hook 'helm-after-update-hook 'helm-top--skip-top-line)))
;;;###autoload
(defun helm-list-emacs-process ()
"Preconfigured `helm' for Emacs process."
(interactive)
(helm-other-buffer 'helm-source-emacs-process "*helm process*"))
;;;###autoload
(defun helm-xrandr-set ()
"Preconfigured helm for xrandr."
(interactive)
(helm :sources 'helm-source-xrandr-change-resolution
:buffer "*helm xrandr*"))
(provide 'helm-sys)
;; Local Variables:
;; byte-compile-warnings: (not obsolete)
;; coding: utf-8
;; indent-tabs-mode: nil
;; End:
;;; helm-sys.el ends here