Experimental Physics and
Industrial Control System

Matthew Pearson <[email protected]> · Tue, 17 Jun 2008 13:46:03 +0100

Hi Andrew / Tech-Talk,

I've just seen the following printout in my vxWorks IOC shell (EPICS
3.14.8.2):

0x1e0abd20 (timerQueue): Unhandled C++ exception resulted in call to
terminate
epicsThread: Unexpected C++ exception "epicsEvent::invalidSemaphore()"
with type "Q210epicsEvent16invalidSemaphore" in thread "timerQueue" at
FRI JUN 13 2008 16:51:01.488894248
0x1e03e550 (timerQueue): Unhandled C++ exception resulted in call to
terminate
epicsThread: Unexpected C++ exception "epicsEvent::invalidSemaphore()"
with type "Q210epicsEvent16invalidSemaphore" in thread "timerQueue" at
FRI JUN 13 2008 16:56:38.279153464
interrupt: Main interrupt with no cause
interrupt: Main interrupt with no cause

It looks like an Q210epicsEvent16invalidSemaphore exception is thrown
from an epicsThread. But this seems to be unexpected, and unexpected()
is called, which seems to exit the IOC shell.

Nick Rees suspects that this was discussed a while ago, and may have
been dealt with in a later version than 3.14.8.2. Any ideas?

Regards,
Matthew Pearson

DLS Controls

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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System