Experimental Physics and
Industrial Control System

Mark Rivers via Core-talk <core-talk at aps.anl.gov> · Wed, 13 Mar 2024 16:11:57 +0000

Hi Michael,

Thanks for pointing out that startPVAServer is no longer required.  When I remove that line from commonPlugins.cmd in ADCore things work fine.  The PVA server still runs, and I no longer have the problem with IOC exit hanging on windows-x64 and windows-x64-debug.

It is interesting that having the unneeded startPVAServer does not cause problems on Linux or windows-x64-static, only on dynamic windows builds.

Thanks,
Mark

-----Original Message-----
From: Michael Davidsaver <mdavidsaver at gmail.com> 
Sent: Wednesday, March 13, 2024 10:52 AM
To: Mark Rivers <rivers at cars.uchicago.edu>
Cc: core-talk at aps.anl.gov
Subject: Re: startPVAServer prevents windows-x64 IOC from exiting

On 3/13/24 06:19, Mark Rivers wrote:
> I just found something interesting.  If I comment out the startPVAServer line it does not hang (which I already knew), but there is now a new atExit handler called first, @pva_server_cleanup.

That is interesting.  You should not need startPVAServer.
The PVA server starts automatically during iocInit(), and has done so for some years.

Running startPVAServer again should be ok though.  Only
printing:

> PVA server already running

However, I guess you have found a logic error.  Perhaps with the ordering?  You might try reversing the order of these two statements.

> startPVAServer
> iocInit()

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System