The global coupling facility manager information section represents
data that is global to all CF processing done by the Coupling Facility
Manager. The following appears under this header:
- CF Manager Control Table Anchor
- Represents the address to the IWMCFCT (CFCT - Coupling Facility
Control Table) table.
- Task Control Flags or No Task Control Flags Set
- Header line indicating that Task Control Flags exist or do not
exist. If Task Control Flags is displayed then
any of the following information may be displayed:
- Local Mode
- Indicates local mode designation from the IXCQUERY LOCAL(xxxx)
invocation
- Connection Made
- Indicates that the Coupling Facility Manager has made a successful
connection to a structure at least once. Once set it remains on for
IPL duration.
- VCP Allowed To Abend
- There are some situations that require IWMC3VCP to take an abend.
An example would be IWMC3VCP finding a bad CFRB. (You should never
encounter a bad CFRB unless there is an internal problem.)
When
this indicator is set module IWMC3VCP is allowed to abend. Prior to
IWMC3VCP taking the abend the indicator is reset and IWMC3VCP does
not take those abends again. Doing this prevents IWMC3VCP from going
into a recursive abend condition.
- CST Allowed To Abend
- There are some situations that require IWMC3CST to take an abend.
An example would be issuing IXLCONN and getting a bad parameter return
code. (You should never encounter a bad parameter return code unless
there is an internal problem.)
When this indicator is set module
IWMC3CST is allowed to abend. Prior to IWMC3CST taking the abend the
indicator is reset and IWMC3CST does not take those abends again.
- DST Allowed To Abend
- There are some situations that require IWMC3DST to take an abend.
An example would be issuing IXLDISC and getting a bad parameter return
code. (You should never encounter a bad parameter return code unless
there is an internal problem.)
When this indicator is set module
IWMC3DST is allowed to abend. Prior to IWMC3DST taking the abend the
indicator is reset and IWMC3DST does not take those abends again.
- Update Processor Flags or No Update Processor Flags Set
- Header line indicating that Update Processor Flags exist or
do not exist. If Update Processor Flags is
displayed then any of the following information may be displayed:
- Update Processor Timer Set
- When set, indicates that a timer has been created to allow the
update processor (IWMC3UDP) to get control again.
- Timer Information
- Header line indicating that the following information represents
CF timer information:
- Timer Interval For Update Processor
- The timer interval for the update processor (IWMC3UDP) in hundreds
of a second.
- Counts
- Header line indicating that the following information represents
CF processor counts.
- System Processor Restart Counter
- Count represents the number of times the Coupling Facility Manager
has restarted while the system processing function was still in control
or zero.
Normally the Coupling Facility Manager should not fail
while doing anything. If this is the case then zero should exist
normally.
If a count exists then the Coupling Facility Manager
was handling some system recovery in IWMC3SYS. In any case a non-zero
count indicates failure while handling system recovery.
- Event Processor Restart Counter
- Count represents the number of times the Coupling Facility Manager
has restarted while the event processing function was still in control
or zero.
Normally the Coupling Facility Manager should not fail
while doing anything. If this is the case then zero should exist
normally.
If a count exists then the Coupling Facility Manager
was handling some event (from XES) in IWMC3EVP. In any case a non-zero
count indicates failure while handling an event.
- Anchors
- This section represents anchors used by the Coupling Facility
Manager:
- Structure Definition Anchor
- Represents the address to the IWMCFSD (CFSD - Coupling Facility
Structures Definition) table.
- Event Processor Anchors
- Header line indicating that the following information represents
event processor (IWMC3EVP) anchors:
- Head Of External CFRB Queue
- Pointer to the head of the external CFRB queue. This is where
CF functions outside of the Coupling Facility Manager task put work
for the event processor (IWMC3EVP).
- First CFRB On Internal Work Queue
- Pointer to the first CFRB on an internal work queue used by
module IWMC3EVP.
- Last CFRB On Internal Work Queue
- Pointer to the last CFRB on an internal work queue used by module
IWMC3EVP.
- System Processor Anchors
- Header line indicating that the following information represents
system processor (IWMC3SYS) anchors:
- Head Of External CFRB Queue
- Pointer to the head of the external CFRB queue. This is where
CF functions outside of the Coupling Facility Manager task put work
for the system processor (IWMC3SYS).
- First CFRB On Internal Work Queue
- Pointer to the first CFRB on an internal work queue used by
module IWMC3SYS.
- Last CFRB On Internal Work Queue
- Pointer to the last CFRB on an internal work queue used by module
IWMC3SYS.
- Multisystem Enclave Anchors
- Header line indicating that the following information represents
multisystem enclave anchors:
- Name Table
- Pointer to the multisystem enclave name table object.
- Cell Pool IDs
- Header line indicating that the following information represents
cell pool IDs for the Coupling Facility Manager:
- Dynamic Area Cell Pool ID
- Represents the dynamic area cell pool used by the Coupling Facility
Manager. For example, module IWMC3EXP (handles IWMEXPT) uses this
cell pool to get a dynamic area for the module.
- Miscellaneous
- Header line indicating that the following information represents
miscellaneous that in the CFCT:
- Last Export Sequence Number
- Represents the last sequence number assigned to a multisystem
enclave exported by this system.
- Latches
- Header line indicating that the following information represents
CF latch data:
- Global Latch Set Token
- Represents the CF global latch set token.
- Entry Latch Set Token
- Represents the CF entry latch set token.