Experimental Physics and
Industrial Control System

Dear, sir

I have a question about procServ starting an IOC.

When I run the IOC through ../../bin/linux-arm/SHINE st.cmd

all pvs run normally and output the correct results.

Then, I automatically start the IOC via procServ.

Each time the processor is turned on, the PVs is 0 for all outputs.

These pv variables are in ai or longin form and are output via setDoubleParam or setIntegerParam.

in SHINE.db:

record(ai, "$(P)$(R)BPM_X")                        
{                                                           
   field(DTYP, "asynFloat64")
   field(INP,  "@asyn($(PORT),$(ADDR),$(TIMEOUT))BPM_X")
   field(SCAN, "I/O Intr")                        
}

in SHINE.cpp

setDoubleParam(P_BPM_X,        (signed)bpm_x/1000.00);

callParamCallbacks();

or waveforms

record(waveform, "$(P)$(R)CH1_RAW_WAVEFORM")
{
    field(DTYP, "asynFloat64ArrayIn")
    field(INP,  "@asyn($(PORT),$(ADDR),$(TIMEOUT))CH1_RAW_WAVEFORM")
    field(FTVL, "DOUBLE")
    field(NELM, "2048")
    field(SCAN, "I/O Intr")
}

doCallbacksFloat64Array(pData_CH1_waveform, imglen, P_CH1_Waveform, 0);

-----------------------------------------------------------------------

When I check the PVs，they show <undefined> 0 UDF INVALID

root@snk2-debian-project:~# telnet localhost 20001
Trying ::1...
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
@@@ Welcome to procServ (procServ Process Server 2.7.0)
@@@ Use ^X to kill the child, auto restart is ON, use ^T to toggle auto restart
@@@ procServ server PID: 356
@@@ Server startup directory: /home/EPICS/SHINE-IOC/iocBoot/iocSHINE
@@@ Child startup directory: /home/EPICS/SHINE-IOC/iocBoot/iocSHINE
@@@ Child "SHINE-IOC" started as: ./st.cmd
@@@ Child "SHINE-IOC" PID: 363
@@@ procServ server started at: Wed Jun  5 13:13:59 2024
@@@ Child "SHINE-IOC" started at: Wed Jun  5 13:13:59 2024
@@@ 0 user(s) and 0 logger(s) connected (plus you)
dbpr SHINE-BI:BPM_X
AMSG:               ASG :               DESC:               DISA: 0             
DISV: 1             NAME: SHINE-BI:BPM_X                    NAMSG:              
RVAL: 0             SEVR: INVALID       STAT: UDF           SVAL: 0             
TPRO: 0             VAL : 0

However,if I restart the IOC, they show up fine.

epics> ^C@@@ Current time: Wed Jun  5 13:18:57 2024
@@@ Child process is shutting down, a new one will be restarted shortly
@@@ ^R or ^X restarts the child, ^Q quits the server
@@@ @@@ @@@ @@@ @@@
@@@ Received a sigChild for process 363. The process was killed by signal 2
@@@ Restarting child "SHINE-IOC"
@@@    (as ./st.cmd)
@@@ The PID of new child "SHINE-IOC" is: 443
@@@ @@@ @@@ @@@ @@@
#!../../bin/linux-arm/SHINE
< envPaths
epicsEnvSet("IOC","iocSHINE")
epicsEnvSet("TOP","/home/EPICS/SHINE-IOC")
epicsEnvSet("EPICS_BASE","/home/EPICS/base-7.0.7")
epicsEnvSet("SUPPORT","/home/EPICS/support")
epicsEnvSet("ASYN","/home/EPICS/support/asyn4-38")
epicsEnvSet("AUTOSAVE","/home/EPICS/support/autosave-R5-10-2")
cd "/home/EPICS/SHINE-IOC"
## Register all support components
dbLoadDatabase "dbd/SHINE.dbd"
SHINE_registerRecordDeviceDriver pdbbase
## Load record instances
#dbLoadTemplate "db/user.substitutions"
#dbLoadRecords "db/SHINEVersion.db", "user=root"
#dbLoadRecords "db/dbSubExample.db", "user=root"
##### ZYM ###########
SHINEConfigure("testAPD", 1000)
#############mode_type = 2
################# mmap finished ##################
------------pre_value_ddr=30100000
################# value setting finished ##################
dbLoadRecords("db/SHINE.db","P=SHINE-BI:,R=,PORT=testAPD,ADDR=0,TIMEOUT=10000")
#dbLoadRecords("db/asynRecord.db","P=SHINE-BI:,R=,PORT=testAPD,ADDR=0,OMAX=,IMAX=")
######################
########## AUTOSAVE ##########
set_requestfile_path(".")
set_savefile_path("/home/EPICS/","autosave")
save_restoreSet_IncompleteSetsOk(1)
save_restoreSet_DatedBackupFiles(0)
set_pass0_restoreFile("shineioc.sav")
############################
cd "/home/EPICS/SHINE-IOC/iocBoot/iocSHINE"
iocInit
Starting iocInit
############################################################################
## EPICS R7.0.7
## Rev. 2023-04-11T16:40+0800
## Rev. Date build date/time:
############################################################################
reboot_restore: entry for file 'shineioc.sav'
reboot_restore: Found filename 'shineioc.sav' in restoreFileList.
*** restoring from '/home/EPICS/autosave/shineioc.sav' at initHookState 6 (before record/device init) ***
reboot_restore: done with file 'shineioc.sav'
iocRun: All initialization complete
create_monitor_set("shineioc.req",10,"P=SHINE-BI:")
------------value_ddr=7010000a
## Start any sequence programs
#seq sncExample, "user=root"
epics> shineioc.sav: 38 of 38 PV's connected
dbpr SHINE-BI:BPM_X
AMSG:               ASG :               DESC:               DISA: 0             
DISV: 1             NAME: SHINE-BI:BPM_X                    NAMSG:              
RVAL: 0             SEVR: NO_ALARM      STAT: NO_ALARM      SVAL: 0             
TPRO: 0             VAL : -3739.613

########################################

The autostart service is

----------------------------------------

[Unit]
Description=Start EPICS IOC for asyn port driver
After=network.target
[Service]
Type=forking
Restart=on-failure
RestartSec=5
ExecStart=/home/EPICS/runioc.sh
ExecReload=/bin/kill -s HUP $MAINPID
ExecStop=/bin/kill -s TERM $MAINPID
ExecStopPost=/usr/bin/sleep 5
TimeoutStopSec=5
User=root
[Install]
WantedBy=multi-user.target

-----------------------------------------

The runioc.sh is:

#!/bin/bash
export EPICS_CA_MAX_ARRAY_BYTES=50000000
cd /home/EPICS/SHINE-IOC/iocBoot/iocSHINE
procServ -n "SHINE-IOC" -I ^D^C 20001 ./st.cmd

------------------------------------------

Best regards,

Yimei Zhou

Replies:

RE: automatically start the IOC via procServ Mark Rivers via Tech-talk

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