Experimental Physics and
Industrial Control System

Mark Rivers via Core-talk <[email protected]> · Fri, 10 Jan 2020 20:25:12 +0000

Michael wrote:

> I guess "thread" has type 'class epicsThread' which must at some point be destroyed.

Yes, it is type 'class epicsThread'.  

> Are you doing this explicitly w/ epicsThread::exitWait() or implicitly via ~epicsThread?

Martin wrote:
> I guess ~callbackThread() is not being called. Here is the code:

This is my destructor.
callbackThread::~callbackThread()
{
    shutdown.signal();
    thread.exitWait();
}

However, the callbackThread object is only destroyed when the asynPortDriver object itself is destroyed.  

These messages happen at iocInit, when I have just created the asynPortDriver object, not when it is being destroyed.

I don't actually ever delete the asynPortDriver object, so I never call the callbackThread destructor.

Martin, you actually wrote all of this code with the callbackThread object 9 months ago.  I have not seen these messages until base 7.0.3.1 and I only see them on vxWorks.

I had another issue with thread joining on vxWorks, which Andrew found was a bug in 7.0.3.1.  Could this also be a bug, either the same one or another one?

Thanks,
Mark

-----Original Message-----
From: Konrad, Martin <[email protected]> 
Sent: Friday, January 10, 2020 1:59 PM
To: Mark Rivers <[email protected]>
Cc: [email protected]
Subject: Re: epicsThread warnings

Hi Mark,> Am I doing something wrong?  If not why am I getting those
messages?I guess ~callbackThread() is not being called. Here is the code:

https://github.com/epics-modules/asyn/blob/master/asyn/asynPortDriver/asynPortDriver.cpp#L916-L920
https://github.com/epics-modules/asyn/blob/master/asyn/asynPortDriver/asynPortDriver.cpp#L3795

Did you forget to destroy your asynPortDriver object?

-Martin

-- 
Martin Konrad
Facility for Rare Isotope Beams
Michigan State University
640 South Shaw Lane
East Lansing, MI 48824-1321, USA
Tel. 517-908-7253
Email: [email protected]

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System