[En-Nut-Discussion] Watchdog/Idle thread issues again

[Ulrich Hertlein]

Hi people,

I'm struggling with fundamental idle thread/watchdog issues again and 
hopefully someone can shed some light on the problem.

My application uses two threads:
- an idle thread that checks and decrements a counter and issues a reset 
when the counter reaches zero.
- a worker thread that polls I/O pins and sends out UDP packets. The 
worker thread periodically resets the counter.

I thought this would save me from hangups but obviously it doesn't it 
the OS hangs and the idle thread never is scheduled.

What's the way out here? I can't just use the hardware watchdog since 
its max. timeout is ~2s which is not enough for the network stack.

The application runs fine for a few hours (~16 hours last time) and then 
hangs. Memory usage is stable.

Thanks in advance,
/ulrich

-- 
Ulrich Hertlein | Software Development

ART+COM AG
Kleiststr. 23-26 | 10787 Berlin | Germany

phone: +49.30.21001-433
fax: +49.30.21001-555
http://www.artcom.de