Experimental Physics and
Industrial Control System

 

 

 

 

 

-----Original Message-----
From: Michael Davidsaver <mdavidsaver at gmail.com>
Sent: Wednesday, February 28, 2024 4:22 PM
To: Mark Rivers <rivers at cars.uchicago.edu>
Cc: tech-talk at aps.anl.gov
Subject: Re: pvAccess assert error

 

On 2/28/24 10:49, Mark Rivers wrote:

> Hi Michael,

>

> I sent a message to both tech-talk and core-talk at 4:31 PM CST yesterday.

>

> This is the tech-talk message:

> https://epics.anl.gov/tech-talk/2024/msg00292.php

>

> This is the core-talk message:

> https://epics.anl.gov/core-talk/2024/msg00042.php

 

Ah, this is an issue with MSVC debug builds which Freddie Akeroyd already found and fixed.

 

This fix is included in pvAccessCPP 7.1.7, which is bundled in epics-base 7.0.8.

 

 

> However, I did not actually then receive the message from tech-talk.  And it seems like maybe you did not either?  It seems like tech-talk archived it but did not send it?

>

> Mark

>

>

> -----Original Message-----

> From: Michael Davidsaver <mdavidsaver at gmail.com>

> Sent: Wednesday, February 28, 2024 12:31 PM

> To: Mark Rivers <rivers at cars.uchicago.edu>

> Subject: Re: pvAccess assert error

>

> Hi Mark,

>

> Am I being dense today?  I only see a screen capture attached to your original mail.

>

>

> On 2/28/24 10:25, Mark Rivers wrote:

>> Hi Michael,

>> 

>> Thanks for the reply.  I sent the full stack trace yesterday.

>> 

>> Mark

>> 

>> 

>> -----Original Message-----

>> From: Michael Davidsaver <mdavidsaver at gmail.com>

>> Sent: Wednesday, February 28, 2024 12:20 PM

>> To: Mark Rivers <rivers at cars.uchicago.edu>

>> Cc: tech-talk at aps.anl.gov

>> Subject: Re: pvAccess assert error

>> 

>> On 2/26/24 16:37, Mark Rivers via Tech-talk wrote:

>>> Folks,

>>> 

>>> I am running a new areaDetector camera.  It generates frames that are 4096x3072 pixels, 8-bit.  I can collect data from the camera at 150 frames/s using a BitFlow CoaXSpress card with no problems.  This is on a Windows PC.

>>> 

>>> However, when I try to use pvAccess to read the data from the NDPluginPva plugin I get an assert error in pvAccess in my Windows application.  The error message is in the attachment.

>>> 

>>> This happens when I use the ImageJ pvAccess plugin, and also when I use the following Linux command on another machine:

>>> 

>>> $ pvmonitor 13BF1:Pva1:Image > /dev/null

>>> 

>>> Any idea what the problem could be?  This is base 7.0.7.

>> 

>> At a guess, maybe another size()==0 situations as with:

>> 

>> https://github.com/epics-base/pvDataCPP/issues/50

>> 

>> If so, a full stack trace should point at the offending code.

>> 

>