Experimental Physics and
Industrial Control System

Emmanuel Mayssat <[email protected]> · Tue, 08 Mar 2005 11:50:10 -0800

Hello,
I am pushing the limit of iocsh...
As all of you already know the iocsh script goes like this:
load_databse_definition
register_device_driver
Instanciate(record1)
Instanciate(record2)
iocInit
As I described a month ago ( see if-then-else for iocsh thread ), we are
using templates for record instanciations.

Also we have programs that generate stcmd files automatically. ( user
select subsystem of attached hardware and stcmd is generated
automatically to work only with this hardware -- great for troubleshooting)
1/ In this context, in the above stmcd file record1 doesn't know if
record2 is instanciated. But if record2 exist then record1.FLNK should
point to it.
So, immediately in the block/template instanciate(record2), I insert
dbpf("record1.FLNK","record2").
I run the stcmd file, it freeze with the message:
dbLoadRecords("/home/epics/devel/lyncean/db/DELTA.db","deviceName=iocir:DELTA:14:1,referenceRecordName=SBC1:APhsAO,targetRecordName=SBC1:BPhsAO,engineeringUnits=V");
dbpf("SBC1:APhsAO.FLNK","iocir:DELTA:14:1:AO")
A call to "assert (dbLockIsInitialized)" failed in ../dbLock.c line 168.
EPICS Release EPICS R3.14.6 $R3-14-6$ $2004/05/28 19:27:47$.
Current time Tue Mar 08 2005 11:18:24.183692000.
Please E-mail this message to the author or to [email protected]
Calling epicsThreadSuspendSelf()
... Great :-( !.....
When I put the dbpf after the iocInit and it works.

But in term of "engineering beauty", I really want to put the dbpf in
the instanciate(record2) template ( i.e. before iocInit call ). Also if
I put it in instanciate(record1) and record2 doesn't exist, you get
error messages.
How would you suggest I do this?
2/ I thought about creating records in a running database. That is run
dbLoadRecord commands after iocInit. But it doesn't seem to work as I
expected. Can we do this with iocsh? i.e. create and delete records in a
running database?
--
Emmanuel

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System