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newsContinuing improving pup_event
I reported on this a couple of days ago:
http://bkhome.org/news/201802/revisiting-pupevent-first-changes.html
The woof-CE developers are also overhauling pup_event. I noticed that
they have removed the IPC mechanism, and the one-second probing for
optical media.
When X starts, /usr/local/pup_event/pup_event_frontend_d is started
(from /root/.xinitrc) as a background process. In Puppy and Quirky/Easy,
this "daemon" calls /usr/local/pup_event/frontend_timeout every second,
that script, every fourth second, probes if an optical media inserted.
/usr/local/pup_event/pup_event_frontend_d reads hotplug events, known
as "uevents", from the kernel, and this includes optical media
insert/remove. However, the kernel hotplugging detection does not work
for optical on some old PCs. Hence the backup probing in
/usr/local/pup_event/frontend_timeout
However, the frequent optical drive probes impact performance, and
the woof-CE developers decided to remove that from
/usr/local/pup_event/frontend_timeout. Me too, it is now gone.
In fact, I now only have /usr/local/pup_event/frontend_timeout60,
that runs every 60 seconds. It now works by the pup_event IPC mechanism.
I have expanded usage of this IPC, which was my original intention.
/usr/local/pup_event/pup_event_frontend_d is a "server", that posts
IPC messages about hotplug events, network up/down (and what interface),
and 1, 4 and 60 second timeouts.
pup_event IPC is described in your puppy/Quirky/Easy, at /usr/local/pup_event/pup_event_ipc-README.htm
BaCon
Some of my utilities are written in BaCon, but the last few years I
have been plagued with problems, the utilities not working properly.
I have been working with Peter over the last few days, trying to
narrow-down the problems. It mostly comes down to "string handling
improvements" that were introduced in BaCon 3.0.3+.
Discussion here:
http://basic-converter.proboards.com/thread/992/string-manipulation-causes-segmentation-fault
http://basic-converter.proboards.com/thread/988/implicit-declaration-poll-function
http://basic-converter.proboards.com/thread/989/string-variable-inside-usec
http://basic-converter.proboards.com/thread/990/concat-error
I have been rewriting pup_event_frontend_d and pup_event_ipc, works well now.