Re: [ts-7000] Watchdog or Linux reboot?

[Larry <>]

I designed something similar to what you're suggesting and am pleased with it.
I ended up with a few other low priority things that needed to be done that werer convenient
to put into this thread as well.
What you could do is to open a socket between the main code and the watchdog thread.
Have the watchdog send a message periodically and if there is no response, say, 3 times in a row,
reset.
Also something that worked well, is I checked the task list for all essential tasks, and same thing,
allowed something to be missing only 3 times in a row.
And finally, I used it to monitor some log files that if too large would threaten the system,
and set a low and high water mark on length.
If any of the logs grows past high water mark, trim (FIFO style) back to the low water mark.


e_fenimore wrote:

Not sure if this is the best place for this question: but...here goes:

To guarantee that a program is always running, seems like a software watchdog is the best
idea. However, the watchdog shipped with the TS-7260 needs to be fed every 8 seconds.
Segmenting my program into 8 second blocks seems messy. So, I propose an alternate
approach:

I'll use a separate thread (or even independent app) to periodically check in on the main app.
If the main app doesn't check in within, say, 30 minutes, a reset can be forced. I could use
the watchdog in that separate thread so that if it died, too, it would cause a reset. This
seems like a good approach. Just wondering if anyone has anything better, or some insight
into watchdog use?

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