(Download): Renamed from "Anonymous FTP"; modify for

[elisp/apel.git] / poe-xemacs.el

diff --git a/poe-xemacs.el b/poe-xemacs.el
index 59e0784..5ebf94f 100644 (file)
--- a/poe-xemacs.el
+++ b/poe-xemacs.el
@@ -20,8 +20,8 @@
 
 ;; You should have received a copy of the GNU General Public License
 ;; along with XEmacs; see the file COPYING.  If not, write to the Free
-;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
-;; 02111-1307, USA.
+;; Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+;; MA 02110-1301, USA.
 
 ;;; Code:
 
@@ -82,33 +82,113 @@ When called interactively, prompt for the name of the color to use."
 ;;;
 
 (condition-case nil
+    (require 'timer-funcs)
+  (error nil))
+(condition-case nil
     (require 'timer)
-  (error
+  (error nil))
+(or
+ (or (featurep 'timer-funcs) (featurep 'timer))
+ (progn
    (require 'itimer)
-   (defun-maybe run-at-time (time repeat function &rest args)
-     (start-itimer (make-temp-name "rat")
-                  `(lambda ()
-                     (,function ,@args))
-                  time repeat))
+   (if (and (= emacs-major-version 19) (<= emacs-minor-version 14))
+       (defun-maybe run-at-time (time repeat function &rest args)
+        (start-itimer (make-temp-name "rat")
+                      `(lambda ()
+                         (,function ,@args))
+                      time repeat))
+     (defun-maybe run-at-time (time repeat function &rest args)
+       "Function emulating the function of the same name of Emacs.
+TIME should be nil meaning now, or a number of seconds from now.
+Return an itimer object which can be used in either `delete-itimer'
+or `cancel-timer'."
+       (apply #'start-itimer "run-at-time"
+             function (if time (max time 1e-9) 1e-9)
+             repeat nil t args)))
    (defalias 'cancel-timer 'delete-itimer)
    (defun with-timeout-handler (tag)
      (throw tag 'timeout))
    (defmacro-maybe with-timeout (list &rest body)
      (let ((seconds (car list))
           (timeout-forms (cdr list)))
-     `(let ((with-timeout-tag (cons nil nil))
-           with-timeout-value with-timeout-timer)
-       (if (catch with-timeout-tag
-             (progn
-               (setq with-timeout-timer
-                     (run-at-time ,seconds nil
-                                  'with-timeout-handler
-                                  with-timeout-tag))
-               (setq with-timeout-value (progn . ,body))
-               nil))
-           (progn . ,timeout-forms)
-         (cancel-timer with-timeout-timer)
-         with-timeout-value))))))
+       `(let ((with-timeout-tag (cons nil nil))
+             with-timeout-value with-timeout-timer)
+         (if (catch with-timeout-tag
+               (progn
+                 (setq with-timeout-timer
+                       (run-at-time ,seconds nil
+                                    'with-timeout-handler
+                                    with-timeout-tag))
+                 (setq with-timeout-value (progn . ,body))
+                 nil))
+             (progn . ,timeout-forms)
+           (cancel-timer with-timeout-timer)
+           with-timeout-value))))))
+
+(require 'broken)
+
+(broken-facility run-at-time-tick-tock
+  "`run-at-time' is not punctual."
+  ;; Note that it doesn't support XEmacsen prior to the version 19.15
+  ;; since `start-itimer' doesn't pass arguments to a timer function.
+  (or (and (= emacs-major-version 19) (<= emacs-minor-version 14))
+      (condition-case nil
+         (progn
+           (unless (or itimer-process itimer-timer)
+             (itimer-driver-start))
+           ;; Check whether there is a bug to which the difference of
+           ;; the present time and the time when the itimer driver was
+           ;; woken up is subtracted from the initial itimer value.
+           (let* ((inhibit-quit t)
+                  (ctime (current-time))
+                  (itimer-timer-last-wakeup
+                   (prog1
+                       ctime
+                     (setcar ctime (1- (car ctime)))))
+                  (itimer-list nil)
+                  (itimer (start-itimer "run-at-time" 'ignore 5)))
+             (sleep-for 0.1) ;; Accept the timeout interrupt.
+             (prog1
+                 (> (itimer-value itimer) 0)
+               (delete-itimer itimer))))
+       (error nil))))
+
+(when-broken run-at-time-tick-tock
+  (defalias 'run-at-time
+    (lambda (time repeat function &rest args)
+      "Function emulating the function of the same name of Emacs.
+It works correctly for TIME even if there is a bug in the XEmacs core.
+TIME should be nil meaning now, or a number of seconds from now.
+Return an itimer object which can be used in either `delete-itimer'
+or `cancel-timer'."
+      (let ((itimers (list nil)))
+       (setcar
+        itimers
+        (apply #'start-itimer "fixed-run-at-time"
+               (lambda (itimers repeat function &rest args)
+                 (let ((itimer (car itimers)))
+                   (if repeat
+                       (progn
+                         (set-itimer-function
+                          itimer
+                          (lambda (itimer repeat function &rest args)
+                            (set-itimer-restart itimer repeat)
+                            (set-itimer-function itimer function)
+                            (set-itimer-function-arguments itimer args)
+                            (apply function args)))
+                         (set-itimer-function-arguments
+                          itimer
+                          (append (list itimer repeat function) args)))
+                     (set-itimer-function
+                      itimer
+                      (lambda (itimer function &rest args)
+                        (delete-itimer itimer)
+                        (apply function args)))
+                     (set-itimer-function-arguments
+                      itimer
+                      (append (list itimer function) args)))))
+               1e-9 (if time (max time 1e-9) 1e-9)
+               nil t itimers repeat function args))))))
 
 
 ;;; @ to avoid bug of XEmacs 19.14