bug#45729: [PATCH] system_process_attributes for OpenBSD

[Omar Polo]

Tags: patch

Hello,

The attached patch implements system_process_attributes for OpenBSD.
With this I am able to use proced \o/

There are five stats that I don't know how to collect (cminflt, cmajflt,
cstime, ctime and thcount).  Everything else seem consistent with
top(1).

I avoided to dynamically allocate the args string and instead reused the
existing storage; this is similar to the freebsd code, but if it seems
ugly I can replace that with a calloc+strlcat like in the previous patch
sent to emacs-devel@.

Note: I don't know how sysctl behaves on other systems, but at least on
OpenBSD it's not possible to get the argv for every process.  In my
environment only for a couple of process the KERN_PROC_ARGV sysctl
fails.  So, it's possible to see some entries with `?' as `args' in
proced, but you can verify that it's "expected" by running "ps $PID" and
see that you get "(executable-name)" under the COMMAND column.  (top(1)
seems to just hide them)

Should the patch include an entry in etc/NEWS?

Thanks,

Omar Polo

In GNU Emacs 28.0.50 (build 4, x86_64-unknown-openbsd6.8, X toolkit, cairo 
version 1.16.0, Xaw scroll bars)
 of 2021-01-05 built on venera
Repository revision: ce0c9c349363b5dbea56f7e32c838a93c729263d
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12010000
System Description: OpenBSD venera 6.8 GENERIC.MP#223 amd64

Configured using:
 'configure --prefix=/home/op/opt/emacs --with-x-toolkit=lucid'

system_process_attribute-2.diff
Description: Text Data