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Date: Fri, 28 Nov 2008 15:42:45 +0100
From: "Petr Cervenka" <grugh@domain.hid>
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Subject: [Xenomai-help] Hang at glibc time() function call
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To: xenomai-help <xenomai@xenomai.org>

Hello,
we have a problems with hanging of our real-time application. In fact, the computer stops to respond totally.
I succeeded to find the exact hang position in couple of our tasks (but not all of them) by setting of some digital outputs of HW device:
1) The most real-time task with the highest priority is still running as it should be (100us period).
2) Some of the tasks are in "sleep" state. They are waiting on some event or timeout.
3) One low priority task seems to be blocked at glibc time() function call.

But I would like to know if it is the source of the problem or only a consequent.
I will try to replace the time() function call with rt_timer_read(), but couldn't be the problem elsewhere?

Configuration:
Athlon XP 4600+
linux-2.6.26.3
xenomai-2.4.5 + patch for proper queue deletion

Thanks for any advice.
Petr Cervenka