Control blocks

This topic lists some of the FEPI control blocks and their resident storage subpools, where applicable. For details of the subpools, see Storage manager domain (SM).

DFHSZSDS (Static area)
Used to anchor all FEPI storage
DFHSZDCM (Common area)
Used to anchor all FEPI Resource Manager storage (SZSPFCCM)
DFHSZDND (Node)
Represents a node (SZSPFCND)
DFHSZDPD (Pool)
Represents a pool (SZSPFCPD)
DFHSZDTD (Target)
Represents a target (SZSPFCTD)
DFHSZDPS (Propertyset)
Represents a property set (SZSPFCPS)
DFHSZDCD (Connection)
Represents a connection (a node-target pair) (SZSPFCCD)
DFHSZDCV (Conversation)
Represents a FEPI conversation (SZSPFCCV)
DFHSZDSR (Surrogate)
Used to associate nodes, pools, and targets with other control blocks--not to be confused with a CICS® surrogate terminal (SZSPFCSR)
DFHSZDQE (Queue element)
Used to schedule Resource Manager work (SZSPFCWE).

Some of the relations between FEPI control blocks are shown in Figure 55.

Figure 55. FEPI control block relationships
 This is a technical drawing showing some of the relationships between FEPI control blocks.
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