From: Michael Albinus <Michael.Albinus@alcatel-lucent.de>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: Julian Scheid <julians37@googlemail.com>, emacs-devel@gnu.org
Subject: process-file and Tramp's file cache (was: bug#1741: 23.0.60; vc fail to register file while logged as /su:: with tramp)
Date: Tue, 18 Aug 2009 12:16:22 +0200 [thread overview]
Message-ID: <nq8whhv349.fsf_-_@alcatel-lucent.de> (raw)
In-Reply-To: <jwveivvrww9.fsf-monnier+emacsbugreports@gnu.org> (Stefan Monnier's message of "Tue, 14 Apr 2009 13:06:02 -0400")
Stefan Monnier <monnier@iro.umontreal.ca> writes:
> BTW, to improve the behavior in case of things like "git status", it
> might be worthwhile to add some way to indicate that a particular use of
> process-file is (supposed to be) free of side-effects.
I would like to introduce a new variable `process-file-modification-list'.
It's default value shall be `t', which means that any file on the remote
host could have been modified by the corresponding `process-file' call.
`nil' means that no file is modified during `process-file'. A list of
strings (remote file names) are indication, that exactly those files are
modified, when `process-file' runs.
This would allow Tramp to optimize its file cache. Currently, it assumes
after every `process-file' call, that all cached values are invalid.
This results in unnecessary check operations on the remote side.
A typical use case in `vc-registered' would look like this:
(let (handler process-file-modification-list)
(cond ...
Opinions?
> Stefan
Best regards, Michael.
next prev parent reply other threads:[~2009-08-18 10:16 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200904150011.n3F0BT8Q005193@godzilla.ics.uci.edu>
2008-12-30 10:48 ` bug#1741: 23.0.60; vc fail to register file while logged as /su:: with tramp Thierry Volpiatto
2009-04-07 16:57 ` Dan Nicolaescu
2009-04-08 11:23 ` thierry.volpiatto
2009-04-08 16:24 ` Dan Nicolaescu
2009-04-08 17:53 ` Stefan Monnier
2009-04-09 13:51 ` Michael Albinus
2009-04-09 14:38 ` Stefan Monnier
2009-04-09 15:06 ` Michael Albinus
2009-04-09 18:23 ` Stefan Monnier
2009-04-12 18:15 ` Michael Albinus
2009-04-12 19:41 ` Stefan Monnier
2009-04-12 19:56 ` Michael Albinus
2009-04-12 22:51 ` Stefan Monnier
2009-04-13 9:30 ` Michael Albinus
2009-04-13 12:24 ` Stefan Monnier
2009-04-14 15:19 ` Michael Albinus
2009-04-14 17:06 ` Stefan Monnier
2009-04-15 20:55 ` Michael Albinus
2009-08-18 10:16 ` Michael Albinus [this message]
2009-08-18 14:32 ` process-file and Tramp's file cache Stefan Monnier
2009-08-18 14:54 ` Michael Albinus
2009-08-18 16:23 ` Stefan Monnier
2009-08-18 18:49 ` Michael Albinus
2009-08-18 19:19 ` Stefan Monnier
2009-08-19 7:44 ` Michael Albinus
2009-04-15 0:20 ` bug#1741: marked as done (23.0.60; vc fail to register file while logged as /su:: with tramp) Emacs bug Tracking System
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