RE: Sequence monitor not getting callback

["Zelazny, Michael Stanley" <zelazny@slac.stanford.edu>]

If it helps, this IOC has 2 stuck sequences:

#1 of 1:
Channel name: "R35"
  Unexpanded (assigned) name: "{pv}"
  Variable name: "VAL"
    address = 145117704 = 0x8a65208
    type = int
    count = 1
  Value = 0
  Monitor flag = 1
    Monitored
  Assigned
  Connected
  Get not completed or no get issued
  Put not completed or no put issued
  Status = 0
  Severity = 0
  Message =
  Time stamp = <undefined>
Next? (+/- skip count)

sioc-sys0-ss00>
[detached]
Connection to lcls-dev2 closed.
lcls-zelazny bash:/nfs/slac/g/lcls/epics/ioc/data/sioc-sys0-ss00>caget R35
R35                            70
lcls-zelazny bash:/nfs/slac/g/lcls/epics/ioc/data/sioc-sys0-ss00>      

________________________________________
From: tech-talk-bounces@aps.anl.gov [tech-talk-bounces@aps.anl.gov] On Behalf Of Zelazny, Michael Stanley [zelazny@slac.stanford.edu]
Sent: Monday, September 26, 2011 5:22 PM
To: tech-talk@aps.anl.gov; Shankar, Murali; Zhou, Jingchen; Williams Jr., Ernest L.
Subject: RE: Sequence monitor not getting callback

Murali,

Here is the error.  Please debug and fix if you can.

Thanks,

Mike

#1 of 1:
Channel name: "J60"
  Unexpanded (assigned) name: "{pv}"
  Variable name: "VAL"
    address = 2716111720 = 0xa1e49368
    type = int
    count = 1
  Value = 0
  Monitor flag = 1
    Monitored
  Assigned
  Connected
  Get not completed or no get issued
  Put not completed or no put issued
  Status = 0
  Severity = 0
  Message =
  Time stamp = <undefined>
Next? (+/- skip count)

sioc-sys0-ss00>
[detached]
Connection to lcls-dev2 closed.
lcls-zelazny bash:/nfs/slac/g/lcls/epics/ioc/data/sioc-sys0-ss00>caget J60
J60                            17
lcls-zelazny bash:/nfs/slac/g/lcls/epics/ioc/data/sioc-sys0-ss00>
________________________________________
From: tech-talk-bounces@aps.anl.gov [tech-talk-bounces@aps.anl.gov] On Behalf Of Zelazny, Michael Stanley [zelazny@slac.stanford.edu]
Sent: Monday, September 26, 2011 3:02 PM
To: tech-talk@aps.anl.gov; Shankar, Murali; Zhou, Jingchen; Williams Jr., Ernest L.
Subject: RE: Sequence monitor not getting callback

Ben, Murali,

Any idea what the "numMonitoredChans 1 firstMonitorCount 0 assignCount 1 firstConnectCount 1" message is trying to tell me?

[snip]
# Set ioc console prompt
epicsEnvSet("IOCSH_PS1","sioc-sys0-ss00>")
# Post Startup Complete, the IRMIS crawler appreciates your cooperation.
sioc-sys0-ss00>numMonitoredChans 1 firstMonitorCount 0 assignCount 1 firstConnectCount 1

sioc-sys0-ss00>seqcar
Total programs=2600, channels=2600, connected=2600, disconnected=0
sioc-sys0-ss00>numMonitoredChans 1 firstMonitorCount 0 assignCount 1 firstConnectCount 1
numMonitoredChans 1 firstMonitorCount 0 assignCount 1 firstConnectCount 1

sioc-sys0-ss00>
sioc-sys0-ss00>
sioc-sys0-ss00>
sioc-sys0-ss00>
[snip]

Background:

I'm trying to reproduce the "sequence not getting its monitor callback" problem.

I have 2600 sequences running:

lcls-zelazny bash:~/epics/ioc/SeqSupport/SeqSupportApp/src>cat SeqChecker.st
program SeqChecker

%%#include <string.h>      /* sprintf prototype */
%%#include <errlog.h>      /* errlogPrintf */

option +c;  /* All connections must be made before execution begins */
option +d;  /* Turn on runtime debug messages */
option +r;  /* All declarations private to this sequence */
option -a;  /* All pvGets must be synchronous */

int VAL;
assign VAL to "{pv}";
monitor VAL;

ss SeqCheckerss {

  state checking {

    when (0 == VAL) {

      errlogPrintf("%s failed to get its monitor.\n");
      epicsThreadSleep(60);

      } state checking

    }

}
lcls-zelazny bash:~/epics/ioc/SeqSupport/SeqSupportApp/src>

The pv's are:

lcls-zelazny bash:~/epics/ioc/SeqSupport/SeqSupportApp/Db>cat SeqSupport.vdb
#! Generated by VisualDCT v2.6
#! DBDSTART
#! DBD("../../dbd/SeqSupport.dbd")
#! DBDEND



record(calc, "${pv}") {
  field(SCAN, "10 second")
  field(PINI, "YES")
  field(VAL, "1")
  field(CALC, "A + 1")
  field(INPA, "${pv}")
}

#! Further lines contain data used by VisualDCT
#! View(2000,2115,1.0)
#! Record("${pv}",2300,2254,0,1,"${pv}")
#! Field("${pv}.VAL",16777215,0,"${pv}.VAL")
#! Field("${pv}.INPA",16777215,0,"${pv}.INPA")
#! Link("${pv}.INPA","${pv}.VAL")
lcls-zelazny bash:~/epics/ioc/SeqSupport/SeqSupportApp/Db>