diff options
Diffstat (limited to 'lisp/emacs-lisp/timer.el')
| -rw-r--r-- | lisp/emacs-lisp/timer.el | 44 |
1 files changed, 16 insertions, 28 deletions
diff --git a/lisp/emacs-lisp/timer.el b/lisp/emacs-lisp/timer.el index 94f39940b66..b12d9068676 100644 --- a/lisp/emacs-lisp/timer.el +++ b/lisp/emacs-lisp/timer.el @@ -4,6 +4,7 @@ ;; 2009, 2010 Free Software Foundation, Inc. ;; Maintainer: FSF +;; Package: emacs ;; This file is part of GNU Emacs. @@ -92,31 +93,20 @@ fire each time Emacs is idle for that many seconds." More precisely, the next value, after TIME, that is an integral multiple of SECS seconds since the epoch. SECS may be a fraction." (let ((time-base (ash 1 16))) - (if (fboundp 'atan) - ;; Use floating point, taking care to not lose precision. - (let* ((float-time-base (float time-base)) - (million 1000000.0) - (time-usec (+ (* million - (+ (* float-time-base (nth 0 time)) - (nth 1 time))) - (nth 2 time))) - (secs-usec (* million secs)) - (mod-usec (mod time-usec secs-usec)) - (next-usec (+ (- time-usec mod-usec) secs-usec)) - (time-base-million (* float-time-base million))) - (list (floor next-usec time-base-million) - (floor (mod next-usec time-base-million) million) - (floor (mod next-usec million)))) - ;; Floating point is not supported. - ;; Use integer arithmetic, avoiding overflow if possible. - (let* ((mod-sec (mod (+ (* (mod time-base secs) - (mod (nth 0 time) secs)) - (nth 1 time)) - secs)) - (next-1-sec (+ (- (nth 1 time) mod-sec) secs))) - (list (+ (nth 0 time) (floor next-1-sec time-base)) - (mod next-1-sec time-base) - 0))))) + ;; Use floating point, taking care to not lose precision. + (let* ((float-time-base (float time-base)) + (million 1000000.0) + (time-usec (+ (* million + (+ (* float-time-base (nth 0 time)) + (nth 1 time))) + (nth 2 time))) + (secs-usec (* million secs)) + (mod-usec (mod time-usec secs-usec)) + (next-usec (+ (- time-usec mod-usec) secs-usec)) + (time-base-million (* float-time-base million))) + (list (floor next-usec time-base-million) + (floor (mod next-usec time-base-million) million) + (floor (mod next-usec million)))))) (defun timer-relative-time (time secs &optional usecs) "Advance TIME by SECS seconds and optionally USECS microseconds. @@ -442,8 +432,6 @@ This function returns a timer object which you can use in `cancel-timer'." "This is the timer function used for the timer made by `with-timeout'." (throw tag 'timeout)) -(put 'with-timeout 'lisp-indent-function 1) - (defvar with-timeout-timers nil "List of all timers used by currently pending `with-timeout' calls.") @@ -455,6 +443,7 @@ event (such as keyboard input, input from subprocesses, or a certain time); if the program loops without waiting in any way, the timeout will not be detected. \n(fn (SECONDS TIMEOUT-FORMS...) BODY)" + (declare (indent 1)) (let ((seconds (car list)) (timeout-forms (cdr list))) `(let ((with-timeout-tag (cons nil nil)) @@ -543,5 +532,4 @@ If the user does not answer after SECONDS seconds, return DEFAULT-VALUE." (provide 'timer) -;; arch-tag: b1a9237b-7787-4382-9e46-8f2c3b3273e0 ;;; timer.el ends here |