Experimental Physics and
Industrial Control System

 

 

Thank you, Eusebio.



El 2023-10-23 21:18, Michael Davidsaver escribió:

On 10/23/23 06:42, Eusebio Naif Al-Soliman Fuentes via Tech-talk wrote:

Hello everybody.
I have a small question regarding the C++ API (https://urldefense.com/v3/__https://docs.epics-controls.org/projects/pvaccess-cpp/en/latest/doxygen/index.html__;!!D9dNQwwGXtA!T_nobMmMB8jptdn9HXHnZahRhn0KepK6GuLknfamzwj8Vm7jBGj-BFj_rYxlKTjFXD4Zqjzhgtcch4ji2ojtt8s$ ) <https://urldefense.com/v3/__https://docs.epics-controls.org/projects/pvaccess-cpp/en/latest/doxygen/index.html__;!!D9dNQwwGXtA!T_nobMmMB8jptdn9HXHnZahRhn0KepK6GuLknfamzwj8Vm7jBGj-BFj_rYxlKTjFXD4Zqjzhgtcch4ji2ojtt8s$ >
I want to do the equivalent operation to 'pvlist' in order to get all the IOCs in my network and also get all the variables declared in each IOC (pvlist <GUID>). Is there any method implemented in the C++ API to do that? Which one?

pvAccessCPP does not expose an API which could be used to build "pvlist".

PVXS does expose pvxs::client::Context::discover() which is used to build
the "pvxlist" executable.

https://urldefense.com/v3/__https://github.com/mdavidsaver/pvxs/blob/master/tools/list.cpp__;!!D9dNQwwGXtA!T_nobMmMB8jptdn9HXHnZahRhn0KepK6GuLknfamzwj8Vm7jBGj-BFj_rYxlKTjFXD4Zqjzhgtcch4ji1hQovv0$

https://urldefense.com/v3/__https://mdavidsaver.github.io/pvxs/client.html*_CPPv4N4pvxs6client7Context8discoverERRNSt8functionIFvRK10DiscoveredEEE__;Iw!!D9dNQwwGXtA!T_nobMmMB8jptdn9HXHnZahRhn0KepK6GuLknfamzwj8Vm7jBGj-BFj_rYxlKTjFXD4Zqjzhgtcch4jinhh_VR4$

I must give a word of warning.  Frequent pinging of all servers, and
querying of all PV names, can generate considerable load.

Please be careful that you don't DDoS your own network!

Thanks in advance.
-- Saludos/Best regards

*University of Granada *

Eusebio Naif Al-Soliman Fuentes
*MSc. Data Science and Computer Engineering*__

eunaif at correo.ugr.es