Re: PHAS and PINI

["Johnson, Andrew N. via Tech-talk" <tech-talk at aps.anl.gov>]

On 7/18/23 11:29 AM, Michael Davidsaver via Tech-talk wrote:

On 7/18/23 08:57, Mark Rivers via Tech-talk wrote:

Folks,

Does PHAS control the order in which records with PINI=YES are processing during iocInit, even is SCAN=Passive?

Yes.

https://github.com/epics-base/epics-base/blob/42604fc794b6f26b60db953a230b52c1118d3039/modules/database/src/ioc/misc/iocInit.c#L593-L594

The Release Notes for R3.14.11 (when that was added) said:

PINI Processing and PHAS values

The PINI field now has its own menu type with four more choices, RUN, RUNNING, PAUSE and PAUSED. The earlier NO and YES values for this field remain as before and cause the same processing as before. The new values cause records to be processed during the announcement of the new initHookAtIocRun, initHookAfterIocRunning, initHookAtIocPause and initHookAfterIocPaused states respectively.

Records with PINI=YES will be processed during the iocBuild stage of iocInit, follwed by records with PINI=RUN during the iocRun stage and records with PINI=RUNNING during the initHookAfterIocRunning stage. If an iocPause command is given, any records with PINI=PAUSE will be processed at the initHookAtIocPause stage followed by records with PINI=PAUSED will be processed at the initHookAfterIocPaused stage. A subsequent iocRun command causes the PINI=RUN and PINI=RUNNING records to be processed again.

The PHAS field now controls the order in which records are processed as a result of the PINI mechanism; within each stage, lower values of PHAS are scanned before higher ones.

I agree that the dbCommonRecord.html wording could be fixed (in dbCommon.dbd.pod), that page doesn't mention the choices for PINI other than YES either but if you follow the link in the table below to the menuPini.html file that describes them, and there it also mentions that PHAS is honored during PINI processing.

@Timo — a task for the Documentathon?

- Andrew

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