;;; gnus-demon.el --- daemonic Gnus behavior
-;; Copyright (C) 1995-2011 Free Software Foundation, Inc.
+;; Copyright (C) 1995-2015 Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; Keywords: news
;;; Internal variables.
(defvar gnus-demon-timers nil
- "List of idle timers which are running.")
+ "Plist of idle timers which are running.")
(defvar gnus-inhibit-demon nil
"If non-nil, no daemonic function will be run.")
(float-time (or (current-idle-time)
'(0 0 0)))))
-(defun gnus-demon-run-callback (func &optional idle)
- "Run FUNC if Emacs has been idle for longer than IDLE seconds."
+(defun gnus-demon-run-callback (func &optional idle time special)
+ "Run FUNC if Emacs has been idle for longer than IDLE seconds.
+If not, and a TIME is given, restart a new idle timer, so FUNC
+can be called at the next opportunity. Such a special idle run is
+marked with SPECIAL."
(unless gnus-inhibit-demon
- (when (or (not idle)
- (<= idle (gnus-demon-idle-since)))
+ (block run-callback
+ (when (eq idle t)
+ (setq idle 0.001))
+ (cond (special
+ (setq gnus-demon-timers
+ (plist-put gnus-demon-timers func
+ (run-with-timer time time 'gnus-demon-run-callback
+ func idle time))))
+ ((and idle (> idle (gnus-demon-idle-since)))
+ (when time
+ (nnheader-cancel-timer (plist-get gnus-demon-timers func))
+ (setq gnus-demon-timers
+ (plist-put gnus-demon-timers func
+ (run-with-idle-timer idle nil
+ 'gnus-demon-run-callback
+ func idle time t))))
+ (return-from run-callback)))
(with-local-quit
- (ignore-errors
- (funcall func))))))
+ (ignore-errors
+ (funcall func))))))
(defun gnus-demon-init ()
"Initialize the Gnus daemon."
;; If t, replace by 1
(time (cond ((eq time t)
gnus-demon-timestep)
- ((null time) nil)
- (t (* time gnus-demon-timestep))))
+ ((null time)
+ nil)
+ ((stringp time)
+ (* (gnus-demon-time-to-step time) gnus-demon-timestep))
+ (t
+ (* time gnus-demon-timestep))))
+ (idle (cond ((numberp idle)
+ (* idle gnus-demon-timestep))
+ ((and (eq idle t) (numberp time))
+ time)
+ (t
+ idle)))
+
(timer
(cond
- ;; (func number t)
- ;; Call when Emacs has been idle for `time'
- ((and (numberp time) (eq idle t))
- (run-with-timer time time 'gnus-demon-run-callback func time))
- ;; (func number number)
- ;; Call every `time' when Emacs has been idle for `idle'
- ((and (numberp time) (numberp idle))
- (run-with-timer time time 'gnus-demon-run-callback func idle))
;; (func nil number)
;; Only call when Emacs has been idle for `idle'
((and (null time) (numberp idle))
- (run-with-idle-timer (* idle gnus-demon-timestep) t
- 'gnus-demon-run-callback func))
- ;; (func number nil)
+ (run-with-idle-timer idle t 'gnus-demon-run-callback func))
+ ;; (func number any)
;; Call every `time'
- ((and (numberp time) (null idle))
- (run-with-timer time time 'gnus-demon-run-callback func)))))
+ ((integerp time)
+ (run-with-timer time time 'gnus-demon-run-callback
+ func idle time))
+ ;; (func string any)
+ ((stringp time)
+ (run-with-timer time (* 24 60 60) 'gnus-demon-run-callback
+ func idle)))))
(when timer
- (add-to-list 'gnus-demon-timers timer)))))
+ (setq gnus-demon-timers (plist-put gnus-demon-timers func timer))))))
+
+(defun gnus-demon-time-to-step (time)
+ "Find out how many steps to TIME, which is on the form \"17:43\"."
+ (let* ((now (current-time))
+ ;; obtain NOW as discrete components -- make a vector for speed
+ (nowParts (decode-time now))
+ ;; obtain THEN as discrete components
+ (thenParts (parse-time-string time))
+ (thenHour (elt thenParts 2))
+ (thenMin (elt thenParts 1))
+ ;; convert time as elements into number of seconds since EPOCH.
+ (then (encode-time 0
+ thenMin
+ thenHour
+ ;; If THEN is earlier than NOW, make it
+ ;; same time tomorrow. Doc for encode-time
+ ;; says that this is OK.
+ (+ (elt nowParts 3)
+ (if (or (< thenHour (elt nowParts 2))
+ (and (= thenHour (elt nowParts 2))
+ (<= thenMin (elt nowParts 1))))
+ 1 0))
+ (elt nowParts 4)
+ (elt nowParts 5)
+ (elt nowParts 6)
+ (elt nowParts 7)
+ (elt nowParts 8)))
+ ;; calculate number of seconds between NOW and THEN
+ (diff (+ (* 65536 (- (car then) (car now)))
+ (- (cadr then) (cadr now)))))
+ ;; return number of timesteps in the number of seconds
+ (round (/ diff gnus-demon-timestep))))
(gnus-add-shutdown 'gnus-demon-cancel 'gnus)
(defun gnus-demon-cancel ()
"Cancel any Gnus daemons."
(interactive)
- (dolist (timer gnus-demon-timers)
- (nnheader-cancel-timer timer))
+ (dotimes (i (/ (length gnus-demon-timers) 2))
+ (nnheader-cancel-timer (nth (1+ (* i 2)) gnus-demon-timers)))
(setq gnus-demon-timers nil))
(defun gnus-demon-add-disconnection ()
projects / gnus / blobdiff