RE: Problems with asyn read calls at driver exit

[Mark Rivers <rivers@cars.uchicago.edu>]

One way that this is commonly done is to have your epicsAtExit handler set a flag epicsExiting=true.  Then at the top of your I/O functions you just return immediately if epicsExiting==true.

Mark

________________________________________
From: tech-talk-bounces@aps.anl.gov [tech-talk-bounces@aps.anl.gov] on behalf of Sergio Esquembri [sesquembri@i2a2.upm.es]
Sent: Thursday, May 28, 2015 8:39 AM
To: tech-talk@aps.anl.gov
Subject: Problems with asyn read calls at driver exit

Hi,

I'm developing an EPICS driver using asynDriver and I'm having problems
with the finalization of the driver. The function that frees all the
resources allocated and closes the session with the hardware driver is
registered with epicsAtExit. The problem here is that some PVs have
timed scans and the driver is receiving calls to the registered read
methods after the ioc exit call.

What is the best way to avoid read calls when closing the driver?
Should I unregister manually my driver from the asyn interfaces?

Any help or hint about this will be appreciated.

Thanks,
Sergio.

--
-----------------------------
Sergio Esquembri
Technical University of Madrid
Instrumentation and Applied Acoustic Research Group
Crta Valencia Km-7
Madrid 28031
Phone(R&D Lab): 913364696 Ext: 29400
email: sesquembri@i2a2.upm.es
-----------------------------
Disclaimer:
This e-mail message may contain confidential information and/or legally
privileged and is intended only for the use of the addressed person. Any
disclosure, copying, distribution or the taking of any action in reliance
on the contents of this e-mail by any other person is strictly prohibited.
If you believe that it has been sent to you in error, please reply to the
sender that you have received the message in error, then delete this
message from your system. Thank you for your cooperation.