Experimental Physics and
Industrial Control System

Dirk Zimoch <[email protected]> · Fri, 2 Mar 2018 10:37:23 +0100

On 02.03.2018 01:19, Andrew Johnson wrote:

dbll (list links)
New: List all database links to given records or fields.

"database links_to_  given records or fields", so it's finding DB links
that point to a particular record or field? Are you using the BKNLK list
field that Michael added to dbCommon in 3.16? This information can be
obtained from the DB LockSet Report command (dblsr with level=2) in all
versions of Base, although it's fairly verbose, e.g:

epics> dblsr signal 2
Lock Set 5 5 members 5 refs epicsMutexId 0x156e2b0
signal:averaged
	INP	 INLINK NPP NMS signal
signal
	FLNK	FWDLINK NPP NMS signal:averaged
	INPB	 INLINK NPP NMS signal:step
	INPC	 INLINK NPP NMS signal:amplitude
	INPD	 INLINK NPP NMS signal:noise
signal:step
signal:amplitude
signal:noise

As I have implemented it in 3.14, I do not use 3.16 features.

I go through the list of all records (as usual) and check each link

against the argument pattern.

The 3.16. feature may help here but when using a pattern for the record

name you still need to go through all records.

Output of an IOC with iocStats:
epics> dbll
MYIOC:FD_CNT.FLNK ==> MYIOC:FD_FREE
MYIOC:FD_FREE.INPA ==> MYIOC:FD_CNT NPP MS
MYIOC:FD_FREE.INPB ==> MYIOC:FD_MAX NPP MS
MYIOC:SCANMON_SEVR.INPA ==> MYIOC:01HZ_UPD_TIME.SEVR NPP MS
MYIOC:SCANMON_SEVR.INPB ==> MYIOC:02HZ_UPD_TIME.SEVR NPP MS
MYIOC:SCANMON_SEVR.INPC ==> MYIOC:05HZ_UPD_TIME.SEVR NPP MS
MYIOC:SCANMON_SEVR.INPD ==> MYIOC:1HZ_UPD_TIME.SEVR NPP MS
MYIOC:SCANMON_SEVR.INPE ==> MYIOC:2HZ_UPD_TIME.SEVR NPP MS
MYIOC:SCANMON_SEVR.INPF ==> MYIOC:5HZ_UPD_TIME.SEVR NPP MS
MYIOC:SCANMON_SEVR.INPG ==> MYIOC:10HZ_UPD_TIME.SEVR NPP MS
MYIOC:CALCSTATUS.INPA ==> MYIOC:SUSP_TASK_CNT.SEVR CP MS
MYIOC:CALCSTATUS.INPB ==> MYIOC:SYS_CPU_LOAD.SEVR CP MS
MYIOC:CALCSTATUS.INPC ==> MYIOC:IOC_CPU_LOAD.SEVR CP MS
MYIOC:CALCSTATUS.INPD ==> MYIOC:MEM_FREE.SEVR CP MS
MYIOC:CALCSTATUS.INPE ==> MYIOC:FD_FREE.SEVR CP MS
MYIOC:CALCSTATUS.INPH ==> MYIOC:CALINK_BROKEN.SEVR CP MS
MYIOC:CALCSTATUS.OUT ==> MYIOC:STATUS PP MS
MYIOC:HEARTBEAT.INPA ==> MYIOC:HEARTBEAT NPP NMS
MYIOC:START_CNT.INPA ==> MYIOC:START_CNT NPP NMS
MYIOC:01HZ_UPD_TIME.INPA ==> MYIOC:01HZ_MODE NPP NMS
MYIOC:02HZ_UPD_TIME.INPA ==> MYIOC:02HZ_MODE NPP NMS
MYIOC:05HZ_UPD_TIME.INPA ==> MYIOC:05HZ_MODE NPP NMS
MYIOC:10HZ_UPD_TIME.INPA ==> MYIOC:10HZ_MODE NPP NMS
MYIOC:1HZ_UPD_TIME.INPA ==> MYIOC:1HZ_MODE NPP NMS
MYIOC:2HZ_UPD_TIME.INPA ==> MYIOC:2HZ_MODE NPP NMS
MYIOC:5HZ_UPD_TIME.INPA ==> MYIOC:5HZ_MODE NPP NMS

Filtering with record pattern:
epics> dbll *CPU_LOAD
MYIOC:CALCSTATUS.INPB ==> MYIOC:SYS_CPU_LOAD.SEVR CP MS
MYIOC:CALCSTATUS.INPC ==> MYIOC:IOC_CPU_LOAD.SEVR CP MS

Filtering with field pattern:
epics> dbll *.SEVR
MYIOC:SCANMON_SEVR.INPA ==> MYIOC:01HZ_UPD_TIME.SEVR NPP MS
MYIOC:SCANMON_SEVR.INPB ==> MYIOC:02HZ_UPD_TIME.SEVR NPP MS
MYIOC:SCANMON_SEVR.INPC ==> MYIOC:05HZ_UPD_TIME.SEVR NPP MS
MYIOC:SCANMON_SEVR.INPD ==> MYIOC:1HZ_UPD_TIME.SEVR NPP MS
MYIOC:SCANMON_SEVR.INPE ==> MYIOC:2HZ_UPD_TIME.SEVR NPP MS
MYIOC:SCANMON_SEVR.INPF ==> MYIOC:5HZ_UPD_TIME.SEVR NPP MS
MYIOC:SCANMON_SEVR.INPG ==> MYIOC:10HZ_UPD_TIME.SEVR NPP MS
MYIOC:CALCSTATUS.INPA ==> MYIOC:SUSP_TASK_CNT.SEVR CP MS
MYIOC:CALCSTATUS.INPB ==> MYIOC:SYS_CPU_LOAD.SEVR CP MS
MYIOC:CALCSTATUS.INPC ==> MYIOC:IOC_CPU_LOAD.SEVR CP MS
MYIOC:CALCSTATUS.INPD ==> MYIOC:MEM_FREE.SEVR CP MS
MYIOC:CALCSTATUS.INPE ==> MYIOC:FD_FREE.SEVR CP MS
MYIOC:CALCSTATUS.INPH ==> MYIOC:CALINK_BROKEN.SEVR CP MS

*.VAL looks for links without field name as well:
epics> dbll *.VAL
MYIOC:FD_CNT.FLNK ==> MYIOC:FD_FREE
MYIOC:FD_FREE.INPA ==> MYIOC:FD_CNT NPP MS
MYIOC:FD_FREE.INPB ==> MYIOC:FD_MAX NPP MS
MYIOC:CALCSTATUS.OUT ==> MYIOC:STATUS PP MS
MYIOC:HEARTBEAT.INPA ==> MYIOC:HEARTBEAT NPP NMS
MYIOC:START_CNT.INPA ==> MYIOC:START_CNT NPP NMS
MYIOC:01HZ_UPD_TIME.INPA ==> MYIOC:01HZ_MODE NPP NMS
MYIOC:02HZ_UPD_TIME.INPA ==> MYIOC:02HZ_MODE NPP NMS
MYIOC:05HZ_UPD_TIME.INPA ==> MYIOC:05HZ_MODE NPP NMS
MYIOC:10HZ_UPD_TIME.INPA ==> MYIOC:10HZ_MODE NPP NMS
MYIOC:1HZ_UPD_TIME.INPA ==> MYIOC:1HZ_MODE NPP NMS
MYIOC:2HZ_UPD_TIME.INPA ==> MYIOC:2HZ_MODE NPP NMS
MYIOC:5HZ_UPD_TIME.INPA ==> MYIOC:5HZ_MODE NPP NMS
(OK, FLNK->VAL is a bit questionable, maybe I should change this)

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System