;;; gnus-async.el --- asynchronous support for Gnus
-;; Copyright (C) 1996,97,98,99 Free Software Foundation, Inc.
+
+;; Copyright (C) 1996, 1997, 1998, 1999, 2000, 2002, 2003, 2004,
+;; 2005, 2006 Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; Keywords: news
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to the
-;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-;; Boston, MA 02111-1307, USA.
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
;;; Commentary:
(require 'gnus-sum)
(require 'nntp)
+(eval-when-compile
+ (when (featurep 'xemacs)
+ (require 'timer-funcs)))
+
(defgroup gnus-asynchronous nil
"Support for asynchronous operations."
:group 'gnus)
-(defcustom gnus-asynchronous t
- "*If nil, inhibit all Gnus asynchronicity.
-If non-nil, let the other asynch variables be heeded."
- :group 'gnus-asynchronous
- :type 'boolean)
-
(defcustom gnus-use-article-prefetch 30
"*If non-nil, prefetch articles in groups that allow this.
If a number, prefetch only that many articles forward;
(const :tag "all" t)
(integer :tag "some" 0)))
+(defcustom gnus-asynchronous nil
+ "*If nil, inhibit all Gnus asynchronicity.
+If non-nil, let the other asynch variables be heeded."
+ :group 'gnus-asynchronous
+ :type 'boolean)
+
(defcustom gnus-prefetched-article-deletion-strategy '(read exit)
"List of symbols that say when to remove articles from the prefetch buffer.
Possible values in this list are `read', which means that
(defvar gnus-async-hashtb nil)
(defvar gnus-async-current-prefetch-group nil)
(defvar gnus-async-current-prefetch-article nil)
+(defvar gnus-async-timer nil)
(defvar gnus-async-prefetch-headers-buffer " *Async Prefetch Headers*")
(defvar gnus-async-header-prefetched nil)
;; do this, which leads to slightly slower article
;; buffer display.
(gnus-async-prefetch-article group next summary)
- (run-with-idle-timer
- 0.1 nil 'gnus-async-prefetch-article group next summary)))))))
+ (when gnus-async-timer
+ (ignore-errors
+ (nnheader-cancel-timer 'gnus-async-timer)))
+ (setq gnus-async-timer
+ (run-with-idle-timer
+ 0.1 nil 'gnus-async-prefetch-article
+ group next summary))))))))
(defun gnus-async-prefetch-article (group article summary &optional next)
"Possibly prefetch several articles starting with ARTICLE."
(if (not (gnus-buffer-live-p summary))
(gnus-async-with-semaphore
- (setq gnus-async-fetch-list nil))
+ (setq gnus-async-fetch-list nil))
(when (and gnus-asynchronous
(gnus-alive-p))
(when next
(gnus-async-with-semaphore
- (pop gnus-async-fetch-list)))
+ (pop gnus-async-fetch-list)))
(let ((do-fetch next)
- (do-message t)) ;(eq major-mode 'gnus-summary-mode)))
+ (do-message t)) ;(eq major-mode 'gnus-summary-mode)))
(when (and (gnus-group-asynchronous-p group)
(gnus-buffer-live-p summary)
(or (not next)
gnus-async-fetch-list))
(gnus-async-with-semaphore
- (unless next
- (setq do-fetch (not gnus-async-fetch-list))
- ;; Nix out any outstanding requests.
- (setq gnus-async-fetch-list nil)
- ;; Fill in the new list.
- (let ((n gnus-use-article-prefetch)
- (data (gnus-data-find-list article))
- d)
- (while (and (setq d (pop data))
- (if (numberp n)
- (natnump (decf n))
- n))
- (unless (or (gnus-async-prefetched-article-entry
- group (setq article (gnus-data-number d)))
- (not (natnump article))
- (not (funcall gnus-async-prefetch-article-p d)))
- ;; Not already fetched -- so we add it to the list.
- (push article gnus-async-fetch-list)))
- (setq gnus-async-fetch-list
- (nreverse gnus-async-fetch-list))))
-
- (when do-fetch
- (setq article (car gnus-async-fetch-list))))
+ (unless next
+ (setq do-fetch (not gnus-async-fetch-list))
+ ;; Nix out any outstanding requests.
+ (setq gnus-async-fetch-list nil)
+ ;; Fill in the new list.
+ (let ((n gnus-use-article-prefetch)
+ (data (gnus-data-find-list article))
+ d)
+ (while (and (setq d (pop data))
+ (if (numberp n)
+ (natnump (decf n))
+ n))
+ (unless (or (gnus-async-prefetched-article-entry
+ group (setq article (gnus-data-number d)))
+ (not (natnump article))
+ (not (funcall gnus-async-prefetch-article-p d)))
+ ;; Not already fetched -- so we add it to the list.
+ (push article gnus-async-fetch-list)))
+ (setq gnus-async-fetch-list
+ (nreverse gnus-async-fetch-list))))
+
+ (when do-fetch
+ (setq article (car gnus-async-fetch-list))))
(when (and do-fetch article)
;; We want to fetch some more articles.
(when arg
(gnus-async-set-buffer)
(gnus-async-with-semaphore
- (setq
- gnus-async-article-alist
- (cons (list (intern (format "%s-%d" group article)
- gnus-async-hashtb)
- mark (set-marker (make-marker) (point-max))
- group article)
- gnus-async-article-alist))))
+ (setq
+ gnus-async-article-alist
+ (cons (list (intern (format "%s-%d" group article)
+ gnus-async-hashtb)
+ mark (set-marker (make-marker) (point-max))
+ group article)
+ gnus-async-article-alist))))
(if (not (gnus-buffer-live-p summary))
(gnus-async-with-semaphore
- (setq gnus-async-fetch-list nil))
+ (setq gnus-async-fetch-list nil))
(gnus-async-prefetch-article group next summary t))))
(defun gnus-async-unread-p (data)
(nntp-server-buffer (current-buffer))
(nntp-have-messaged nil)
(tries 0))
- (condition-case nil
- ;; FIXME: we could stop waiting after some
- ;; timeout, but this is the wrong place to do it.
- ;; rather than checking time-spent-waiting, we
- ;; should check time-since-last-output, which
- ;; needs to be done in nntp.el.
- (while (eq article gnus-async-current-prefetch-article)
- (incf tries)
- (when (nntp-accept-process-output proc 1)
- (setq tries 0))
- (when (and (not nntp-have-messaged) (eq 3 tries))
- (gnus-message 5 "Waiting for async article...")
- (setq nntp-have-messaged t)))
- (quit
- ;; if the user interrupted on a slow/hung connection,
- ;; do something friendly.
- (when (< 3 tries)
- (setq gnus-async-current-prefetch-article nil))
- (signal 'quit nil)))
- (when nntp-have-messaged
- (gnus-message 5 "")))))
+ (when proc
+ (condition-case nil
+ ;; FIXME: we could stop waiting after some
+ ;; timeout, but this is the wrong place to do it.
+ ;; rather than checking time-spent-waiting, we
+ ;; should check time-since-last-output, which
+ ;; needs to be done in nntp.el.
+ (while (eq article gnus-async-current-prefetch-article)
+ (incf tries)
+ (when (nntp-accept-process-output proc)
+ (setq tries 0))
+ (when (and (not nntp-have-messaged)
+ (= tries 3))
+ (gnus-message 5 "Waiting for async article...")
+ (setq nntp-have-messaged t)))
+ (quit
+ ;; if the user interrupted on a slow/hung connection,
+ ;; do something friendly.
+ (when (> tries 3)
+ (setq gnus-async-current-prefetch-article nil))
+ (signal 'quit nil)))
+ (when nntp-have-messaged
+ (gnus-message 5 ""))))))
(defun gnus-async-delete-prefetched-entry (entry)
"Delete ENTRY from buffer and alist."
(set-marker (cadr entry) nil)
(set-marker (caddr entry) nil))
(gnus-async-with-semaphore
- (setq gnus-async-article-alist
- (delq entry gnus-async-article-alist))))
+ (setq gnus-async-article-alist
+ (delq entry gnus-async-article-alist))))
(defun gnus-async-prefetch-remove-group (group)
"Remove all articles belonging to GROUP from the prefetch buffer."
(when (and (gnus-group-asynchronous-p group)
(memq 'exit gnus-prefetched-article-deletion-strategy))
- (let ((alist gnus-async-article-alist))
- (save-excursion
- (gnus-async-set-buffer)
- (while alist
- (when (equal group (nth 3 (car alist)))
- (gnus-async-delete-prefetched-entry (car alist)))
- (pop alist))))))
+ (save-excursion
+ (gnus-async-set-buffer)
+ (dolist (entry gnus-async-article-alist)
+ (when (equal group (nth 3 entry))
+ (gnus-async-delete-prefetched-entry entry))))))
(defun gnus-async-prefetched-article-entry (group article)
"Return the entry for ARTICLE in GROUP iff it has been prefetched."
(provide 'gnus-async)
+;;; arch-tag: fee61de5-3ea2-4de6-8578-2f90ce89391d
;;; gnus-async.el ends here
projects / elisp / gnus.git- / blobdiff