Re: Pointer corruption on Windows

[Mark Rivers via Tech-talk <tech-talk@aps.anl.gov>]

Hi Mark,


asyn 4-25 is almost 5 years old. Could you try updating to a more recent version?


Mark



________________________________
From: tech-talk-bounces@aps.anl.gov <tech-talk-bounces@aps.anl.gov> on behalf of Koennecke Mark (PSI) via Tech-talk <tech-talk@aps.anl.gov>
Sent: Wednesday, July 31, 2019 2:41 AM
To: tech-talk@aps.anl.gov
Subject: Pointer corruption on Windows

Hi,

I am trying to write a motor record driver for the PXI7344 motor controller from
National Instruments and I am experiencing a weird pointer corruption problem.
First the environment:

- Windows 10, PSI computer security wants that
- MS Visual Studio 2010, I have to interface with the NI FlexMotion library which is EOL and from
  this time
- base-3-14-12
- asyn4-25
- motorR6-9

I am using the asynMotorController. What I see in my debugger is that everything is fine with my
pointer until epicsEventSignal(pollEventId_) is called in asynMotorController::wakeupPoller().
After that call my this pointer is corrupted and everything goes downhill from then. I tried to
override wakeupPoller() to an empty method in order to get more information but then
I get the pointer corruption on the call to  epicsEventWaitWithTimeout(pollEventId_, timeout) in
asynMotorController::asynMotorPoller()

Any ideas what could be wrong here?

Best Regards,

     Mark Koennecke