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[Emacs-diffs] Changes to emacs/lisp/proced.el,v
|
From: |
Roland Winkler |
|
Subject: |
[Emacs-diffs] Changes to emacs/lisp/proced.el,v |
|
Date: |
Fri, 12 Sep 2008 16:58:53 +0000 |
CVSROOT: /sources/emacs
Module name: emacs
Changes by: Roland Winkler <winkler> 08/09/12 16:58:53
Index: proced.el
===================================================================
RCS file: /sources/emacs/emacs/lisp/proced.el,v
retrieving revision 1.18
retrieving revision 1.19
diff -u -b -r1.18 -r1.19
--- proced.el 6 Sep 2008 23:03:49 -0000 1.18
+++ proced.el 12 Sep 2008 16:58:53 -0000 1.19
@@ -25,12 +25,15 @@
;; Proced makes an Emacs buffer containing a listing of the current
;; system processes. You can use the normal Emacs commands to move around
;; in this buffer, and special Proced commands to operate on the processes
-;; listed.
+;; listed. See `proced-mode' for getting started.
;;
;; To do:
;; - use defcustom where appropriate
-;; - interactive temporary customizability of `proced-grammar-alist'
+;; - interactive temporary customizability of flags in `proced-grammar-alist'
;; - allow "sudo kill PID", "renice PID"
+;;
+;; Wishlist
+;; - tree view like pstree(1)
;;; Code:
@@ -84,11 +87,11 @@
(defvar proced-grammar-alist
'( ;; attributes defined in `system-process-attributes'
(euid "EUID" "%d" right proced-< nil (euid pid) (nil t nil))
- (user "USER" "%s" left proced-string-lessp nil (user pid) (nil t
nil))
+ (user "USER" nil left proced-string-lessp nil (user pid) (nil t nil))
(egid "EGID" "%d" right proced-< nil (egid euid pid) (nil t nil))
- (group "GROUP" "%s" left proced-string-lessp nil (group user pid) (nil
t nil))
- (comm "COMMAND" "%s" left proced-string-lessp nil (comm pid) (nil t
nil))
- (state "STAT" "%s" left proced-string-lessp nil (state pid) (nil t
nil))
+ (group "GROUP" nil left proced-string-lessp nil (group user pid) (nil
t nil))
+ (comm "COMMAND" nil left proced-string-lessp nil (comm pid) (nil t nil))
+ (state "STAT" nil left proced-string-lessp nil (state pid) (nil t
nil))
(ppid "PPID" "%d" right proced-< nil (ppid pid) (nil t nil))
(pgrp "PGRP" "%d" right proced-< nil (pgrp euid pid) (nil t nil))
(sess "SESS" "%d" right proced-< nil (sess pid) (nil t nil))
@@ -111,7 +114,7 @@
(etime "ETIME" proced-format-time right proced-time-lessp t (etime
pid) (nil t t))
(pcpu "%CPU" "%.1f" right proced-< t (pcpu pid) (nil t t))
(pmem "%MEM" "%.1f" right proced-< t (pmem pid) (nil t t))
- (args "ARGS" "%s" left proced-string-lessp nil (args pid) (nil t
nil))
+ (args "ARGS" proced-format-args left proced-string-lessp nil (args
pid) (nil t nil))
;;
;; attributes defined by proced (see `proced-process-attributes')
(pid "PID" "%d" right proced-< nil (pid) (t t nil))
@@ -123,18 +126,18 @@
Each element has the form
- (KEY NAME FORMAT JUSTIFY PREDICATE REVERSE SORT-SCHEME FILTER-SCHEME).
+ (KEY NAME FORMAT JUSTIFY PREDICATE REVERSE SORT-SCHEME REFINE-FLAGS).
KEY is the car of a process attribute.
NAME appears in the header line.
FORMAT specifies the format for displaying the attribute values.
-It is either a string passed to `format' or a function called with one
-argument, the value of the attribute.
+It can be a string passed to `format'. It can be a function called
+with one argument, the value of the attribute. Nil means take as is.
If JUSTIFY is an integer, its modulus gives the width of the attribute
-vales formatted with FORMAT. If JUSTIFY is positive, NAME appears
+values formatted with FORMAT. If JUSTIFY is positive, NAME appears
right-justified, otherwise it appears left-justified. If JUSTIFY is 'left
or 'right, the field width is calculated from all field values in the listing.
If JUSTIFY is 'left, the field values are formatted left-justified and
@@ -149,16 +152,17 @@
REVERSE is non-nil if the sort order is opposite to the order defined
by PREDICATE.
-SORT-SCHEME is a list (KEY1 KEY2 ...) defing a hierarchy of rules
+SORT-SCHEME is a list (KEY1 KEY2 ...) defining a hierarchy of rules
for sorting the process listing. KEY1, KEY2, ... are KEYs appearing as cars
of `proced-grammar-alist'. First the PREDICATE of KEY1 is evaluated.
-If it yields non-equal, it defines the sorting order for the corresponding
+If it yields non-equal, it defines the sort order for the corresponding
processes. If it evaluates to 'equal the PREDICATE of KEY2 is evaluated, etc.
-FILTER-SCHEME is a list (LESS-B EQUAL-B LARGER-B) used by the command
-`proced-filter-attribute' for filtering KEY (see there). This command
-compares the value of attribute KEY of every process with the value
-of attribute KEY of the process at the position of point using PREDICATE.
+REFINE-FLAGS is a list (LESS-B EQUAL-B LARGER-B) used by the command
+`proced-refine' (see there) to refine the listing based on attribute KEY.
+This command compares the value of attribute KEY of every process with
+the value of attribute KEY of the process at the position of point
+using PREDICATE.
If PREDICATE yields non-nil, the process is accepted if LESS-B is non-nil.
If PREDICATE yields 'equal, the process is accepted if EQUAL-B is non-nil.
If PREDICATE yields nil, the process is accepted if LARGER-B is non-nil.")
@@ -229,7 +233,7 @@
(make-variable-buffer-local 'proced-filter)
(defvar proced-sort 'pcpu
- "Current sorting scheme for proced listing.
+ "Current sort scheme for proced listing.
It must be the KEY of an element of `proced-grammar-alist'.
It can also be a list of KEYs as in the SORT-SCHEMEs of the elements
of `proced-grammar-alist'.")
@@ -247,7 +251,7 @@
:type 'integer)
(defcustom proced-timer-flag nil
- "Non-nil for regular update of a Proced buffer.
+ "Non-nil for auto update of a Proced buffer.
Can be changed interactively via `proced-toggle-timer-flag'."
:group 'proced
:type 'boolean)
@@ -256,11 +260,13 @@
;; Internal variables
(defvar proced-process-alist nil
- "Alist of PIDs displayed by Proced.")
+ "Alist of processes displayed by Proced.
+The car of each element is the PID, and the cdr is a list of
+cons pairs, see `proced-process-attributes'.")
(make-variable-buffer-local 'proced-process-alist)
(defvar proced-sort-internal nil
- "Sorting scheme for listing (internal format).")
+ "Sort scheme for listing (internal format).")
(defvar proced-marker-char ?* ; the answer is 42
"In proced, the current mark character.")
@@ -285,6 +291,13 @@
(defvar proced-marked-face 'proced-marked
"Face name used for marked processes.")
+(defface proced-sort-header
+ '((t (:inherit font-lock-keyword-face)))
+ "Face used for header of attribute used for sorting."
+ :group 'proced-faces)
+(defvar proced-sort-header-face 'proced-sort-header
+ "Face name used for header of attribute used for sorting.")
+
(defvar proced-re-mark "^[^ \n]"
"Regexp matching a marked line.
Important: the match ends just after the marker.")
@@ -307,12 +320,12 @@
"Help string for proced.")
(defconst proced-header-help-echo
- "mouse-2: sort by attribute %s%s"
+ "mouse-1, mouse-2: sort by attribute %s%s (%s)"
"Help string shown when mouse is over a sortable header.")
(defconst proced-field-help-echo
- "mouse-2, RET: filter by attribute %s %s"
- "Help string shown when mouse is over a filterable field.")
+ "mouse-2, RET: refine by attribute %s %s"
+ "Help string shown when mouse is over a refinable field.")
(defvar proced-font-lock-keywords
(list
@@ -347,8 +360,8 @@
(define-key km "P" 'proced-mark-parents)
;; filtering
(define-key km "f" 'proced-filter-interactive)
- (define-key km [mouse-2] 'proced-filter-attribute)
- (define-key km "\C-m" 'proced-filter-attribute)
+ (define-key km [mouse-2] 'proced-refine)
+ (define-key km "\C-m" 'proced-refine)
;; sorting
(define-key km "sc" 'proced-sort-pcpu)
(define-key km "sm" 'proced-sort-pmem)
@@ -357,6 +370,8 @@
(define-key km "sS" 'proced-sort-interactive)
(define-key km "st" 'proced-sort-time)
(define-key km "su" 'proced-sort-user)
+ ;; similar to `Buffer-menu-sort-by-column'
+ (define-key km [header-line mouse-1] 'proced-sort-header)
(define-key km [header-line mouse-2] 'proced-sort-header)
;; formatting
(define-key km "F" 'proced-format-interactive)
@@ -402,7 +417,7 @@
:selected (eq proced-filter ',filter)]))
proced-filter-alist))
("Sorting"
- :help "Select Sorting Scheme"
+ :help "Select Sort Scheme"
["Sort..." proced-sort-interactive
:help "Sort Process List"]
"--"
@@ -427,10 +442,10 @@
"--"
["Revert" revert-buffer
:help "Revert Process Listing"]
- ["Regular Update" proced-toggle-timer-flag
+ ["Auto Update" proced-toggle-timer-flag
:style radio
:selected (eval proced-timer-flag)
- :help "Regular Update of Proced buffer"]
+ :help "Auto Update of Proced Buffer"]
["Send signal" proced-send-signal
:help "Send Signal to Marked Processes"]))
@@ -453,12 +468,13 @@
;; to get a well-defined position of point.
(defun proced-move-to-goal-column ()
- "Move to `goal-column' if non-nil."
+ "Move to `goal-column' if non-nil. Return position of point."
(beginning-of-line)
(unless (eobp)
(if goal-column
(forward-char goal-column)
- (forward-char 2))))
+ (forward-char 2)))
+ (point))
(defun proced-header-line ()
"Return header line for Proced buffer."
@@ -481,6 +497,29 @@
Type \\<proced-mode-map>\\[proced-mark] to mark a process for later commands.
Type \\[proced-send-signal] to send signals to marked processes.
+The initial content of a listing is defined by the variable `proced-filter'
+and the variable `proced-format'.
+The variable `proced-filter' specifies which system processes are displayed.
+The variable `proced-format' specifies which attributes are displayed for
+each process. Type \\[proced-filter-interactive] and
\\[proced-format-interactive]
+to change the values of `proced-filter' and `proced-format'.
+The current value of the variable `proced-filter' is indicated in the
+mode line.
+
+The sort order of Proced listings is defined by the variable `proced-sort'.
+Type \\[proced-sort-interactive] or click on a header in the header line
+to change the sort scheme. The current sort scheme is indicated in the
+mode line, using \"+\" or \"-\" for ascending or descending sort order.
+
+An existing Proced listing can be refined by typing \\[proced-refine]
+with point on the attribute of a process. If point is on the attribute ATTR,
+this compares the value of ATTR of every process with the value of ATTR
+of the process at the position of point. See `proced-refine' for details.
+Refining an existing listing does not update the variable `proced-filter'.
+
+The attribute-specific rules for formatting, filtering, sorting, and refining
+are defined in `proced-grammar-alist'.
+
\\{proced-mode-map}"
(abbrev-mode 0)
(auto-fill-mode 0)
@@ -500,14 +539,11 @@
;;;###autoload
(defun proced (&optional arg)
- "Mode for displaying UNIX system processes and sending signals to them.
-Type \\<proced-mode-map>\\[proced-mark] to mark a process for later commands.
-Type \\[proced-send-signal] to send signals to marked processes.
-
+ "Generate a listing of UNIX system processes.
If invoked with optional ARG the window displaying the process
information will be displayed but not selected.
-\\{proced-mode-map}"
+See `proced-mode' for a descreption of features available in Proced buffers."
(interactive "P")
(let ((buffer (get-buffer-create "*Proced*")) new)
(set-buffer buffer)
@@ -523,7 +559,7 @@
"Type \\<proced-mode-map>\\[quit-window] to quit, \\[proced-help] for
help")))))
(defun proced-timer ()
- "Update Proced buffers regularly using `run-at-time'."
+ "Auto-update Proced buffers using `run-at-time'."
(dolist (buf (buffer-list))
(with-current-buffer buf
(if (and (eq major-mode 'proced-mode)
@@ -531,8 +567,8 @@
(proced-update t t)))))
(defun proced-toggle-timer-flag (arg)
- "Change whether this Proced buffer is updated regularly.
-With prefix ARG, update this buffer regularly if ARG is positive,
+ "Change whether this Proced buffer is updated automatically.
+With prefix ARG, update this buffer automatically if ARG is positive,
otherwise do not update. Sets the variable `proced-timer-flag'.
The time interval for updates is specified via `proced-timer-interval'."
(interactive (list (or current-prefix-arg 'toggle)))
@@ -715,7 +751,8 @@
;;; Filtering
(defun proced-filter (process-alist filter-list)
- "Apply FILTER-LIST to PROCESS-ALIST."
+ "Apply FILTER-LIST to PROCESS-ALIST.
+Return the filtered process list."
(if (symbolp filter-list)
(setq filter-list (cdr (assq filter-list proced-filter-alist))))
(dolist (filter filter-list)
@@ -741,17 +778,16 @@
(setq process-alist new-alist)))
process-alist)
-(defun proced-filter-interactive (scheme &optional revert)
+(defun proced-filter-interactive (scheme)
"Filter Proced buffer using SCHEME.
When called interactively, an empty string means nil, i.e., no filtering.
-With prefix REVERT non-nil revert listing."
+Set variable `proced-filter' to SCHEME. Revert listing."
(interactive
(let ((scheme (completing-read "Filter: "
proced-filter-alist nil t)))
- (list (if (string= "" scheme) nil (intern scheme))
- current-prefix-arg)))
+ (list (if (string= "" scheme) nil (intern scheme)))))
(setq proced-filter scheme)
- (proced-update revert))
+ (proced-update t))
(defun proced-process-tree (process-alist)
"Return process tree for PROCESS-ALIST.
@@ -796,9 +832,34 @@
(push (assq pid process-alist) parent-list))
parent-list))
-(defun proced-filter-attribute (&optional event)
- "Filter Proced listing based on the attribute at point.
-Optional EVENT is the location of the Proced field."
+;; Refining
+
+;; Filters are used to select the processes in a new listing.
+;; Refiners are used to narrow down further (interactively) the processes
+;; in an existing listing.
+
+(defun proced-refine (&optional event)
+ "Refine Proced listing by comparing with the attribute value at point.
+Optional EVENT is the location of the Proced field.
+
+If point is on the attribute ATTR, this command compares the value of ATTR
+of every process with the value of ATTR of the process at the position
+of point. One can select processes for which the value of ATTR is
+\"less than\", \"equal\", and / or \"larger\" than ATTR of the process
+point is on.
+
+The predicate for the comparison of two ATTR values is defined
+in `proced-grammar-alist'. For each return value of the predicate
+a refine flag is defined in `proced-grammar-alist'. A process is included
+in the new listing if the refine flag for the return value of the predicate
+is non-nil.
+The help-echo string for `proced-refine' uses \"+\" or \"-\" to indicate
+the current values of the refine flags.
+
+This command refines an already existing process listing based initially
+on the variable `proced-filter'. It does not change this variable.
+It does not revert the listing. If you frequently need a certain refinement,
+consider defining a new filter in `proced-filter-alist'."
(interactive (list last-input-event))
(if event (posn-set-point (event-end event)))
(let ((key (get-text-property (point) 'proced-key))
@@ -806,24 +867,25 @@
(if (and key pid)
(let* ((grammar (assq key proced-grammar-alist))
(predicate (nth 4 grammar))
- (filter (nth 7 grammar))
+ (refiner (nth 7 grammar))
(ref (cdr (assq key (cdr (assq pid proced-process-alist)))))
val new-alist)
(when ref
(dolist (process proced-process-alist)
(setq val (funcall predicate (cdr (assq key (cdr process))) ref))
- (if (cond ((not val) (nth 2 filter))
- ((eq val 'equal) (nth 1 filter))
- (val (car filter)))
+ (if (cond ((not val) (nth 2 refiner))
+ ((eq val 'equal) (nth 1 refiner))
+ (val (car refiner)))
(push process new-alist)))
(setq proced-process-alist new-alist)
+ ;; Do not revert listing.
(proced-update)))
- (message "No filter defined here."))))
+ (message "No refiner defined here."))))
;; Proced predicates for sorting and filtering are based on a three-valued
;; logic:
-;; Predicates takes two arguments P1 and P2, the corresponding attribute
-;; values of two processes. Predicate should return 'equal if P1 has
+;; Predicates take two arguments P1 and P2, the corresponding attribute
+;; values of two processes. Predicates should return 'equal if P1 has
;; same rank like P2. Any other non-nil value says that P1 is "less than" P2,
;; or nil if not.
@@ -887,7 +949,7 @@
(defun proced-sort (process-alist sorter)
"Sort PROCESS-ALIST using scheme SORTER.
-Return sorted process list."
+Return the sorted process list."
;; translate SORTER into a list of lists (KEY PREDICATE REVERSE)
(setq proced-sort-internal
(mapcar (lambda (arg)
@@ -905,9 +967,12 @@
(defun proced-sort-interactive (scheme &optional revert)
"Sort Proced buffer using SCHEME.
When called interactively, an empty string means nil, i.e., no sorting.
-With prefix REVERT non-nil revert listing."
+With prefix REVERT non-nil revert listing.
+
+Set variable `proced-sort' to SCHEME. The current sort scheme is displayed
+in the mode line, using \"+\" or \"-\" for ascending or descending order."
(interactive
- (let ((scheme (completing-read "Sorting type: "
+ (let ((scheme (completing-read "Sort attribute: "
proced-grammar-alist nil t)))
(list (if (string= "" scheme) nil (intern scheme))
current-prefix-arg)))
@@ -947,7 +1012,8 @@
(defun proced-sort-header (event &optional revert)
"Sort Proced listing based on an attribute.
EVENT is a mouse event with starting position in the header line.
-It is converted in the corresponding attribute key."
+It is converted in the corresponding attribute key.
+This updates the variable `proced-sort'."
(interactive "e\nP")
(let ((start (event-start event))
col key)
@@ -995,11 +1061,15 @@
(format-time-string "%b %e" start)))))
(defun proced-format-ttname (ttname)
- "Format attribute TTNAME, omitting prefix \"/dev/\"."
+ "Format attribute TTNAME, omitting path \"/dev/\"."
;; Does this work for all systems?
- (format "%s" (substring ttname
- (if (string-match "\\`/dev/" ttname)
- (match-end 0) 0))))
+ (substring ttname (if (string-match "\\`/dev/" ttname)
+ (match-end 0) 0)))
+
+(defun proced-format-args (args)
+ "Format attribute ARGS.
+Replace newline characters by \"^J\" (two characters)."
+ (replace-regexp-in-string "\n" "^J" args))
(defun proced-format (process-alist format)
"Display PROCESS-ALIST using FORMAT."
@@ -1012,9 +1082,10 @@
(if (symbolp grammar)
(setq grammar (assq grammar proced-grammar-alist)))
(let* ((key (car grammar))
- (fun (if (stringp (nth 2 grammar))
- `(lambda (arg) (format ,(nth 2 grammar) arg))
- (nth 2 grammar)))
+ (fun (cond ((stringp (nth 2 grammar))
+ `(lambda (arg) (format ,(nth 2 grammar) arg)))
+ ((not (nth 2 grammar)) 'identity)
+ ( t (nth 2 grammar))))
(whitespace (if format whitespace ""))
;; Text properties:
;; We use the text property `proced-key' to store in each
@@ -1024,7 +1095,8 @@
(hprops `(proced-key ,key mouse-face highlight
help-echo ,(format proced-header-help-echo
(if (nth 5 grammar) "-"
"+")
- (nth 1 grammar))))
+ (nth 1 grammar)
+ (if (nth 5 grammar)
"descending" "ascending"))))
(fprops `(proced-key ,key mouse-face highlight
help-echo ,(format proced-field-help-echo
(nth 1 grammar)
@@ -1033,6 +1105,9 @@
(nth 7
grammar) ""))))
value)
+ ;; highlight the header of the sort column
+ (if (eq key proced-sort)
+ (setq hprops (append `(face ,proced-sort-header-face) hprops)))
(goto-char (point-min))
(cond ( ;; fixed width of output field
(numberp (nth 3 grammar))
@@ -1097,6 +1172,7 @@
(defun proced-format-interactive (scheme &optional revert)
"Format Proced buffer using SCHEME.
When called interactively, an empty string means nil, i.e., no formatting.
+Set variable `proced-format' to SCHEME.
With prefix REVERT non-nil revert listing."
(interactive
(let ((scheme (completing-read "Format: "
@@ -1138,10 +1214,25 @@
(setq revert (or revert (not proced-process-alist)))
(or quiet (message (if revert "Updating process information..."
"Updating process display...")))
+ (if revert ;; evaluate all processes
+ (setq proced-process-alist (proced-process-attributes)))
+ ;; filtering and sorting
+ (setq proced-process-alist
+ (proced-sort (proced-filter proced-process-alist
+ proced-filter) proced-sort))
+
+ ;; It is useless to keep undo information if we revert, filter, or
+ ;; refine the listing so that `proced-process-alist' has changed.
+ ;; We could keep the undo information if we only re-sort the buffer.
+ ;; Would that be useful? Re-re-sorting is easy, too.
+ (if (consp buffer-undo-list)
+ (setq buffer-undo-list nil))
+ (let ((buffer-undo-list t)
;; If point is on a field, we try to return point to that field.
;; Otherwise we try to return to the same column
- (let ((old-pos (let ((key (get-text-property (point) 'proced-key)))
- (list (proced-pid-at-point) key
+ (old-pos (let ((pid (proced-pid-at-point))
+ (key (get-text-property (point) 'proced-key)))
+ (list pid key ; can both be nil
(if key
(if (get-text-property (1- (point)) 'proced-key)
(- (point) (previous-single-property-change
@@ -1154,16 +1245,7 @@
(while (re-search-forward "^\\(\\S-\\)" nil t)
(push (cons (save-match-data (proced-pid-at-point))
(match-string-no-properties 1)) mp-list))
- (when revert
- ;; all attributes of all processes
- (setq proced-process-alist (proced-process-attributes))
- ;; do not keep undo information
- (if (consp buffer-undo-list)
- (setq buffer-undo-list nil)))
- ;; filtering and sorting
- (setq proced-process-alist
- (proced-sort (proced-filter proced-process-alist
- proced-filter) proced-sort))
+
;; generate listing
(erase-buffer)
(proced-format proced-process-alist proced-format)
@@ -1173,6 +1255,7 @@
(forward-line))
(setq proced-header-line (concat " " proced-header-line))
(if revert (set-buffer-modified-p nil))
+
;; set `goal-column'
(let ((grammar (assq proced-goal-attribute proced-grammar-alist)))
(setq goal-column ;; set to nil if no match
@@ -1183,10 +1266,13 @@
(if (nth 3 grammar)
(match-beginning 0)
(match-end 0)))))
+
;; restore process marks and buffer position (if possible)
+ ;; FIXME: sometimes this puts point in the middle of the proced buffer
+ ;; where it is not interesting. Is there a better / more flexible
solution?
(goto-char (point-min))
- (if (or mp-list old-pos)
(let (pid mark new-pos)
+ (if (or mp-list (car old-pos))
(while (not (eobp))
(setq pid (proced-pid-at-point))
(when (setq mark (assq pid mp-list))
@@ -1206,18 +1292,21 @@
(point))))
(setq new-pos (point))))
(unless new-pos
- (setq new-pos (if goal-column
- (+ (line-beginning-position)
goal-column)
- (line-beginning-position)))))
+ ;; we found the process, but the field of point
+ ;; is not listed anymore
+ (setq new-pos (proced-move-to-goal-column))))
(setq new-pos (min (+ (line-beginning-position) (nth 2
old-pos))
(line-end-position)))))
- (forward-line))
+ (forward-line)))
(if new-pos
(goto-char new-pos)
+ (goto-char (point-min))
(proced-move-to-goal-column)))
- (proced-move-to-goal-column))
;; update modeline
- ;; Does the long mode-name clutter the modeline?
+ ;; Does the long `mode-name' clutter the modeline? It would be nice
+ ;; to have some other location for displaying the values of the various
+ ;; flags that affect the behavior of proced (flags one might want
+ ;; to change on the fly). Where??
(setq mode-name
(concat "Proced"
(if proced-filter