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Remote process attributes
From: |
Michael Albinus |
Subject: |
Remote process attributes |
Date: |
Mon, 04 Apr 2022 12:59:22 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) |
Hi,
Triggered by the recent changes in proced.el, I've played a little bit
in order to see whether proced could also show remote processes. After
all, it is really simple:
- list-system-processes and process-attributes shall return process
information of the remote host when default-directory is remote. That
is easy to achive by Tramp, calling ps on that remote host.
- proced would show a remote process list, if default-directory is remote.
That would work for the majority of remote default-directory kind. If
the related Tramp connection does not support remote processes, or there
is no proper argument list for ps, list-system-processes returns nil, no
problem.
This is an incompatible change for list-system-processes and
process-attributes. But the current behavior could be preserved by
calling sonething like
(let ((default-directory temporary-file-directory))
(list-system-processes))
There are not so many places list-system-processes and process-attributes
are used in core Emacs, GNU ELPA and NonGNU ELPA. All of them could be
adapted accordingly.
A problem could be to find the proper arguments for ps. I've used a
default setting for GNU/Linux, other systems could apply
connection-local variables for that. My proof-of-concept implementation
offers such settings for the Tramp adb method as well as for remote
(Free)BSD systems and ps implementations based on Busybox. That are the
test cases I could run locally.
Comments?
Best regards, Michael.
- Remote process attributes,
Michael Albinus <=