+2010-10-02 Michael Albinus <michael.albinus@gmx.de>
+
+ * files.el (remote-file-name-inhibit-cache): New defcustom.
+
+ * time.el (display-time-file-nonempty-p): Use
+ `remote-file-name-inhibit-cache'.
+
+ * net/tramp.el (tramp-completion-reread-directory-timeout): Fix
+ docstring.
+
+ * net/tramp-cache.el (tramp-cache-inhibit-cache): Remove.
+ (tramp-get-file-property): Replace `tramp-cache-inhibit-cache' by
+ `remote-file-name-inhibit-cache'. Check also for an integer
+ value. Add/increase counter when `tramp-verbose' >= 10.
+ (tramp-set-file-property): Add/increase counter when
+ `tramp-verbose' >= 10.
+
+ * net/tramp-cmds.el (tramp-cleanup-all-connections)
+ (tramp-cleanup-all-buffers): Set tramp-autoload cookie.
+ (tramp-bug): Set tramp-autoload cookie. Report all interned
+ tramp-* variables. Report also `remote-file-name-inhibit-cache'.
+ (tramp-reporter-dump-variable): Fix docstring. Mask non-7bit
+ characters only in strings.
+
+ * net/tramp-compat.el (remote-file-name-inhibit-cache): Define due
+ to backward compatibility.
+
+ * net/tramp-sh.el (tramp-handle-verify-visited-file-modtime)
+ (tramp-handle-file-name-all-completions)
+ (tramp-handle-vc-registered): Use
+ `remote-file-name-inhibit-cache'.
+ (tramp-open-connection-setup-interactive-shell): Call
+ `tramp-cleanup-connection' directly.
+
2010-10-02 Glenn Morris <rgm@gnu.org>
* emacs-lisp/checkdoc.el (checkdoc-minor-keymap): Remove obsolete alias.
(funcall handler 'file-remote-p file identification connected)
nil)))
+(defcustom remote-file-name-inhibit-cache 10
+ "Whether to use the remote file-name cache for read access.
+
+When `nil', always use the cached values.
+When `t', never use them.
+A number means use them for that amount of seconds since they were
+cached.
+
+File attributes of remote files are cached for better performance.
+If they are changed out of Emacs' control, the cached values
+become invalid, and must be invalidated.
+
+In case a remote file is checked regularly, it might be
+reasonable to let-bind this variable to a value less then the
+time period between two checks.
+Example:
+
+ \(defun display-time-file-nonempty-p \(file)
+ \(let \(\(remote-file-name-inhibit-cache \(- display-time-interval 5)))
+ \(and \(file-exists-p file)
+ \(< 0 \(nth 7 \(file-attributes \(file-chase-links file)))))))"
+ :group 'files
+ :version "24.1"
+ :type `(choice
+ (const :tag "Do not inhibit file name cache" nil)
+ (const :tag "Do not use file name cache" t)
+ (integer :tag "Do not use file name cache"
+ :format "Do not use file name cache older then %v seconds"
+ :value 10)))
+
(defun file-local-copy (file)
"Copy the file FILE into a temporary file on this machine.
Returns the name of the local copy, or nil, if FILE is directly
(defvar tramp-cache-data (make-hash-table :test 'equal)
"Hash table for remote files properties.")
-(defvar tramp-cache-inhibit-cache nil
- "Inhibit cache read access, when `t'.
-`nil' means to accept cache entries unconditionally. If the
-value is a timestamp (as returned by `current-time'), cache
-entries are not used when they have been written before this
-time.")
-
(defcustom tramp-persistency-file-name
(cond
;; GNU Emacs.
(value (when (hash-table-p hash) (gethash property hash))))
(if
;; We take the value only if there is any, and
- ;; `tramp-cache-inhibit-cache' indicates that it is still
+ ;; `remote-file-name-inhibit-cache' indicates that it is still
;; valid. Otherwise, DEFAULT is set.
(and (consp value)
- (or (null tramp-cache-inhibit-cache)
- (and (consp tramp-cache-inhibit-cache)
+ (or (null remote-file-name-inhibit-cache)
+ (and (integerp remote-file-name-inhibit-cache)
+ (<=
+ (tramp-time-diff (current-time) (car value))
+ remote-file-name-inhibit-cache))
+ (and (consp remote-file-name-inhibit-cache)
(tramp-time-less-p
- tramp-cache-inhibit-cache (car value)))))
+ remote-file-name-inhibit-cache (car value)))))
(setq value (cdr value))
(setq value default))
- (if (consp tramp-cache-inhibit-cache)
- (tramp-message vec 1 "%s %s %s" file property value))
(tramp-message vec 8 "%s %s %s" file property value)
+ (when (>= tramp-verbose 10)
+ (let* ((var (intern (concat "tramp-cache-get-count-" property)))
+ (val (or (ignore-errors (symbol-value var)) 0)))
+ (set var (1+ val))))
value))
;;;###tramp-autoload
;; We put the timestamp there.
(puthash property (cons (current-time) value) hash)
(tramp-message vec 8 "%s %s %s" file property value)
+ (when (>= tramp-verbose 10)
+ (let* ((var (intern (concat "tramp-cache-set-count-" property)))
+ (val (or (ignore-errors (symbol-value var)) 0)))
+ (set var (1+ val))))
value))
;;;###tramp-autoload
(tramp-get-connection-property vec "process-buffer" nil)))
(when (bufferp buf) (kill-buffer buf)))))
+;;;###tramp-autoload
(defun tramp-cleanup-all-connections ()
"Flush all Tramp internal objects.
This includes password cache, file cache, connection cache, buffers."
(dolist (name (tramp-list-tramp-buffers))
(when (bufferp (get-buffer name)) (kill-buffer name))))
+;;;###tramp-autoload
(defun tramp-cleanup-all-buffers ()
"Kill all remote buffers."
(interactive)
(autoload 'reporter-submit-bug-report "reporter")
+;;;###tramp-autoload
(defun tramp-bug ()
"Submit a bug report to the Tramp developers."
(interactive)
(reporter-submit-bug-report
tramp-bug-report-address ; to-address
(format "tramp (%s)" tramp-version) ; package name and version
- (delq nil
- `(;; Current state
- tramp-current-method
- tramp-current-user
- tramp-current-host
-
- ;; System defaults
- tramp-auto-save-directory ; vars to dump
- tramp-default-method
- tramp-default-method-alist
- tramp-default-host
- tramp-default-proxies-alist
- tramp-default-user
- tramp-default-user-alist
- tramp-rsh-end-of-line
- tramp-default-password-end-of-line
- tramp-login-prompt-regexp
- ;; Mask non-7bit characters
- (tramp-password-prompt-regexp . tramp-reporter-dump-variable)
- tramp-wrong-passwd-regexp
- tramp-yesno-prompt-regexp
- tramp-yn-prompt-regexp
- tramp-terminal-prompt-regexp
- tramp-temp-name-prefix
- tramp-file-name-structure
- tramp-file-name-regexp
- tramp-methods
- tramp-end-of-output
- tramp-local-coding-commands
- tramp-remote-coding-commands
- tramp-actions-before-shell
- tramp-actions-copy-out-of-band
- tramp-terminal-type
- ;; Mask non-7bit characters
- (tramp-shell-prompt-pattern . tramp-reporter-dump-variable)
- ,(when (boundp 'tramp-backup-directory-alist)
- 'tramp-backup-directory-alist)
- ,(when (boundp 'tramp-bkup-backup-directory-info)
- 'tramp-bkup-backup-directory-info)
- ;; Dump cache.
- (tramp-cache-data . tramp-reporter-dump-variable)
-
- ;; Non-tramp variables of interest
- ;; Mask non-7bit characters
- (shell-prompt-pattern . tramp-reporter-dump-variable)
- backup-by-copying
- backup-by-copying-when-linked
- backup-by-copying-when-mismatch
- ,(when (boundp 'backup-by-copying-when-privileged-mismatch)
- 'backup-by-copying-when-privileged-mismatch)
- ,(when (boundp 'password-cache)
- 'password-cache)
- ,(when (boundp 'password-cache-expiry)
- 'password-cache-expiry)
- ,(when (boundp 'backup-directory-alist)
- 'backup-directory-alist)
- ,(when (boundp 'bkup-backup-directory-info)
- 'bkup-backup-directory-info)
- file-name-handler-alist))
+ (sort
+ (delq nil (mapcar
+ (lambda (x)
+ (and x (boundp x) (cons x 'tramp-reporter-dump-variable)))
+ (append
+ (mapcar 'intern (all-completions "tramp-" obarray 'boundp))
+ ;; Non-tramp variables of interest.
+ '(shell-prompt-pattern
+ backup-by-copying
+ backup-by-copying-when-linked
+ backup-by-copying-when-mismatch
+ backup-by-copying-when-privileged-mismatch
+ backup-directory-alist
+ bkup-backup-directory-info
+ password-cache
+ password-cache-expiry
+ remote-file-name-inhibit-cache
+ file-name-handler-alist))))
+ (lambda (x y) (string< (symbol-name (car x)) (symbol-name (car y)))))
'tramp-load-report-modules ; pre-hook
'tramp-append-tramp-buffers ; post-hook
"))))
(defun tramp-reporter-dump-variable (varsym mailbuf)
- "Pretty-print the value of the variable in symbol VARSYM.
-Used for non-7bit chars in strings."
+ "Pretty-print the value of the variable in symbol VARSYM."
(let* ((reporter-eval-buffer (symbol-value 'reporter-eval-buffer))
(val (with-current-buffer reporter-eval-buffer
(symbol-value varsym))))
(if (hash-table-p val)
;; Pretty print the cache.
(set varsym (read (format "(%s)" (tramp-cache-print val))))
- ;; There are characters to be masked.
+ ;; There are non-7bit characters to be masked.
(when (and (boundp 'mm-7bit-chars)
+ (stringp val)
(string-match
(concat "[^" (symbol-value 'mm-7bit-chars) "]") val))
(with-current-buffer reporter-eval-buffer
- (set varsym (format "(base64-decode-string \"%s\""
+ (set varsym (format "(base64-decode-string \"%s\")"
(base64-encode-string val))))))
;; Dump variable.
"\\(\")\\)" "\"$")) ;; \4 "
(replace-match "\\1\\2\\3\\4")
(beginning-of-line)
- (insert " ;; variable encoded due to non-printable characters\n"))
+ (insert " ;; Variable encoded due to non-printable characters.\n"))
(forward-line 1))
;; Reset VARSYM to old value.
(defun tramp-load-report-modules ()
"Load needed modules for reporting."
-
;; We load message.el and mml.el from Gnus.
(if (featurep 'xemacs)
(progn
(defun tramp-append-tramp-buffers ()
"Append Tramp buffers and buffer local variables into the bug report."
-
(goto-char (point-max))
;; Dump buffer local variables.
(defvar byte-compile-not-obsolete-vars nil))
(setq byte-compile-not-obsolete-vars '(directory-sep-char))
+ ;; `remote-file-name-inhibit-cache' has been introduced with Emacs 24.1.
+ ;; Besides `t', `nil', and integer, we use also timestamps (as
+ ;; returned by `current-time') internally.
+ (defvar remote-file-name-inhibit-cache nil)
+
;; For not existing functions, or functions with a changed argument
;; list, there are compiler warnings. We want to avoid them in
;; cases we know what we do.
(defun tramp-gvfs-dbus-event-error (event err)
"Called when a D-Bus error message arrives, see `dbus-event-error-hooks'."
(when tramp-gvfs-dbus-event-vector
- ;(tramp-cleanup-connection tramp-gvfs-dbus-event-vector)
(tramp-message tramp-gvfs-dbus-event-vector 10 "%S" event)
(tramp-error tramp-gvfs-dbus-event-vector 'file-error "%s" (cadr err))))
(not (tramp-file-name-handler 'file-remote-p f nil 'connected)))
t
(with-parsed-tramp-file-name f nil
- (tramp-flush-file-property v localname)
- (let* ((attr (file-attributes f))
+ (let* ((remote-file-name-inhibit-cache t)
+ (attr (file-attributes f))
(modtime (nth 5 attr))
(mt (visited-file-modtime)))
(mapcar
'list
(or
- ;; Try cache first
- (and
- ;; Ignore if expired
- (or (not (integerp tramp-completion-reread-directory-timeout))
- (<= (tramp-time-diff
- (current-time)
- (tramp-get-file-property
- v localname "last-completion" '(0 0 0)))
- tramp-completion-reread-directory-timeout))
-
- ;; Try cache entries for filename, filename with last
- ;; character removed, filename with last two characters
- ;; removed, ..., and finally the empty string - all
- ;; concatenated to the local directory name
-
- ;; This is inefficient for very long filenames, pity
- ;; `reduce' is not available...
- (car
- (apply
- 'append
- (mapcar
- (lambda (x)
- (let ((cache-hit
- (tramp-get-file-property
- v
- (concat localname (substring filename 0 x))
- "file-name-all-completions"
- nil)))
- (when cache-hit (list cache-hit))))
- (tramp-compat-number-sequence (length filename) 0 -1)))))
+ ;; Try cache entries for filename, filename with last
+ ;; character removed, filename with last two characters
+ ;; removed, ..., and finally the empty string - all
+ ;; concatenated to the local directory name.
+ (let ((remote-file-name-inhibit-cache
+ (or remote-file-name-inhibit-cache
+ tramp-completion-reread-directory-timeout)))
+
+ ;; This is inefficient for very long filenames, pity
+ ;; `reduce' is not available...
+ (car
+ (apply
+ 'append
+ (mapcar
+ (lambda (x)
+ (let ((cache-hit
+ (tramp-get-file-property
+ v
+ (concat localname (substring filename 0 x))
+ "file-name-all-completions"
+ nil)))
+ (when cache-hit (list cache-hit))))
+ (tramp-compat-number-sequence (length filename) 0 -1)))))
;; Cache expired or no matching cache entry found so we need
- ;; to perform a remote operation
+ ;; to perform a remote operation.
(let (result)
;; Get a list of directories and files, including reliably
;; tagging the directories with a trailing '/'. Because I
;; rock. --daniel@danann.net
;; Changed to perform `cd' in the same remote op and only
- ;; get entries starting with `filename'. Capture any `cd'
+ ;; get entries starting with `filename'. Capture any `cd'
;; error messages. Ensure any `cd' and `echo' aliases are
;; ignored.
(tramp-send-command
v (concat localname entry) "file-exists-p" t))
result)
- (tramp-set-file-property
- v localname "last-completion" (current-time))
-
;; Store result in the cache
(tramp-set-file-property
v (concat localname filename)
;; There could be new files, created by the vc backend. We
;; cannot reuse the old cache entries, therefore.
(let (tramp-vc-registered-file-names
- (tramp-cache-inhibit-cache (current-time))
+ (remote-file-name-inhibit-cache (current-time))
(file-name-handler-alist
`((,tramp-file-name-regexp . tramp-vc-file-name-handler))))
;; Keep the debug buffer.
(rename-buffer
(generate-new-buffer-name tramp-temp-buffer-name) 'unique)
- (tramp-compat-funcall 'tramp-cleanup-connection vec)
+ (tramp-cleanup-connection vec)
(if (= (point-min) (point-max))
(kill-buffer nil)
(rename-buffer (tramp-debug-buffer-name vec) 'unique))
make it visible during file name completion in the minibuffer,
Tramp flushes its cache and rereads the directory contents when
more than `tramp-completion-reread-directory-timeout' seconds
-have been gone since last remote command execution. A value of 0
-would require an immediate reread during filename completion, nil
+have been gone since last remote command execution. A value of `t'
+would require an immediate reread during filename completion, `nil'
means to use always cached values for the directory contents."
:group 'tramp
:type '(choice (const nil) integer))
(force-mode-line-update))
(defun display-time-file-nonempty-p (file)
- (and (file-exists-p file)
- (< 0 (nth 7 (file-attributes (file-chase-links file))))))
+ (let ((remote-file-name-inhibit-cache (- display-time-interval 5)))
+ (and (file-exists-p file)
+ (< 0 (nth 7 (file-attributes (file-chase-links file)))))))
;;;###autoload
(define-minor-mode display-time-mode
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