On 05/22/2017 10:48 AM, Ralph Lange wrote:
> Depending on what the release plans for QSRV are (@Michael?),
> You actually might want to add this as an issue to pvaSrv.
I was just about to ask Kay if he would be willing to test QSRV,
> Thanks a lot,
> ~Ralph
>
> ps. We need more unit tests.
>
>
>
> On Mon, May 22, 2017 at 11:29 PM, Kasemir, Kay <[email protected]
> <mailto:[email protected]>> wrote:
>
> Hi:
>
>
> This came up during the V4 introduction at the recent EPICS meeting.
>
> I first thought it's a bug in CS-Studio, but instead it's a
> limitation in pvaSrv.
>
>
> Assume an IOC with pvaSrv added to it, take any calc or ai record:
>
>
> pvget that_record
>
> -> fine
>
>
> pvget that_record.INP (or INPA for a calc record)
>
> -> fine
>
>
> pvget -m that_record
>
> -> fine
>
>
> pvget -m that_record.INP (or INPA for a calc record)
>
> -> Don't get a value, instead message(can not monitor a link field,
> error)
> monitorConnect(Status [type=ERROR, message=create dbPvMonitor failed])
>
>
> Checking the 4.6.0 release of V4, pvaSrv/src/dbPv/[3.14,
> 3.15]/dbPvMonitor.cpp both check for link fields and refuse to
> monitor them with this error message.
>
>
> Fundamentally, 'camonitor' can monitor link fields, and there are
> some use cases for doing this:
>
> Displays (EDM, CSS, ..) sometimes need to put 'INP' links on the
> display so that users can change the input.
>
> The CSS EPCIS PV Tree tool monitors input links to show the link
> hierarchy.
>
>
>
> Is monitoring link fields supported in QSRV?
>
>
> Thanks,
>
> Kay
>
>
>
>
>
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