Experimental Physics and
Industrial Control System

Michael Davidsaver via Tech-talk <tech-talk at aps.anl.gov> · Mon, 13 Apr 2020 19:46:23 -0700

I'd like to announce the existence of the PVXS module to those who
don't lurk on core-talk.  This is a new C++ implementation of a
PVAccess protocol client and server.

Documentation is available:

https://mdavidsaver.github.io/pvxs/

An example server and client

https://mdavidsaver.github.io/pvxs/example.html

I'd like to thank ORNL, and Kay Kasemir specifically, for supporting
this work.

To be clear, and to answer the obvious question first, PVXS is
a functionally equivalent rewrite of the pvDataCPP and
pvAccessCPP modules.  It is not a wrapper.

My aim is to build upon a decade of experience with pvDataCPP/
pvAccessCPP, and a decade of improvements to the C++ language,
to provide a more stable and usable library.

This code has been developed over the past 6 months, and is
I think feature complete for an initial release.  However, it has
not seen much testing by people other than myself. So I have
difficulty in presenting this as a final, set in stone, API.

Therefore, this announcement is the start of what I'm calling this
a "public beta" period.  During this time, which I hope will
be less than 6 months, breaking API changes are acceptable.

Does this mean that there will be breaking API changes?

Maybe.  I anticipate refinements more than major changes,
but I won't rule anything out.

I'm happy to work with anyone who tries to use PVXS during this
period to help mitigate any pain which might arise from future
changes.  (If I know what you're doing I'll try not to break it)

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System