X-Git-Url: http://git.chise.org/gitweb/?a=blobdiff_plain;f=lisp%2Fgnus-async.el;h=e6616588cd64731f8ab97b0ff6d86b3054c6641a;hb=c178f27b6230f5e518f24595811080a64690e059;hp=e880fa413115681d2df1db32fa51bcb91abe4b6b;hpb=8f5529f342b4285cd167494a3f9c470c614b85ce;p=elisp%2Fgnus.git- diff --git a/lisp/gnus-async.el b/lisp/gnus-async.el index e880fa4..e661658 100644 --- a/lisp/gnus-async.el +++ b/lisp/gnus-async.el @@ -1,5 +1,5 @@ ;;; gnus-async.el --- asynchronous support for Gnus -;; Copyright (C) 1996,97,98 Free Software Foundation, Inc. +;; Copyright (C) 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc. ;; Author: Lars Magne Ingebrigtsen ;; Keywords: news @@ -35,7 +35,7 @@ "Support for asynchronous operations." :group 'gnus) -(defcustom gnus-asynchronous t +(defcustom gnus-asynchronous nil "*If nil, inhibit all Gnus asynchronicity. If non-nil, let the other asynch variables be heeded." :group 'gnus-asynchronous @@ -80,6 +80,7 @@ It should return non-nil if the article is to be prefetched." (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) @@ -108,8 +109,8 @@ It should return non-nil if the article is to be prefetched." ,@forms) (gnus-async-release-semaphore 'gnus-async-article-semaphore))) -(put 'gnus-asynch-with-semaphore 'lisp-indent-function 0) -(put 'gnus-asynch-with-semaphore 'edebug-form-spec '(body)) +(put 'gnus-async-with-semaphore 'lisp-indent-function 0) +(put 'gnus-async-with-semaphore 'edebug-form-spec '(body)) ;;; ;;; Article prefetch @@ -146,49 +147,54 @@ It should return non-nil if the article is to be prefetched." ;; 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. @@ -222,16 +228,16 @@ It should return non-nil if the article is to be prefetched." (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) @@ -241,18 +247,9 @@ It should return non-nil if the article is to be prefetched." (defun gnus-async-request-fetched-article (group article buffer) "See whether we have ARTICLE from GROUP and put it in BUFFER." (when (numberp article) - (when (and gnus-async-current-prefetch-group - (string= group gnus-async-current-prefetch-group) + (when (and (equal group gnus-async-current-prefetch-group) (eq article gnus-async-current-prefetch-article)) - (save-excursion - (gnus-async-set-buffer) - (gnus-message 5 "Waiting for async article...") - (let ((proc (nntp-find-connection (current-buffer))) - (nntp-server-buffer (current-buffer)) - (nntp-have-messaged nil)) - (while (eq article (car gnus-async-fetch-list)) - (nntp-accept-process-output proc))) - (gnus-message 5 "Waiting for async article...done"))) + (gnus-async-wait-for-article article)) (let ((entry (gnus-async-prefetched-article-entry group article))) (when entry (save-excursion @@ -263,6 +260,36 @@ It should return non-nil if the article is to be prefetched." (gnus-async-delete-prefetched-entry entry)) t))))) +(defun gnus-async-wait-for-article (article) + "Wait until ARTICLE is no longer the currently-being-fetched article." + (save-excursion + (gnus-async-set-buffer) + (let ((proc (nntp-find-connection (current-buffer))) + (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 ""))))) + (defun gnus-async-delete-prefetched-entry (entry) "Delete ENTRY from buffer and alist." (ignore-errors @@ -270,8 +297,8 @@ It should return non-nil if the article is to be prefetched." (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."