WMR - XRF Message record

      CONTROL BLOCK NAME = DFHWMRPS
      DESCRIPTIVE NAME = CICS TS (XRF) Message Record
           Licensed Materials - Property of IBM
            Restricted Materials of IBM 
           5655-Y04
           (C) Copyright IBM Corp. 1985 
      FUNCTION =
           Defines the format of an XRF Message Management message
           record.
           Message records do not exist as independent control blocks
           in their own right. The definition here is of the message
           record component of other structures. Such components
           exist as records within the XRF status VSAM dataset, as
           the data part of in-core message blocks (WMME) created by
           the XRF reader process, and as the message part of the
           report data in a status CI (WSAR).
           Message records contain the data which are transmitted
           between ACTIVE and BACKUP systems by means of the PUTMSG,
           GETMSG, PUTREQ and PUTRSP message manager requests.
      LIFETIME =
           Same as containing structure.
      STORAGE CLASS =
           Same as containing structure.
      LOCATION =
           Same as containing structure.
      INNER CONTROL BLOCKS =
           WMRCR Format of control record which is the first in
                    each message dataset CI.
           WMRCIDF Defines the format of a VSAM CIDF
           WMRRDF Defines the format of a VSAM RDF
      NOTES :
       DEPENDENCIES = S/370
       RESTRICTIONS =
             None
       MODULE TYPE = Control block definition
     ------------------------------------------------------------------
      EXTERNAL REFERENCES =
        DATA AREAS =
            None
        CONTROL BLOCKS =
            None
        GLOBAL VARIABLES (Macro pass) =
            None
     ------------------------------------------------------------------
       Message Data Record

Table 1.
Offset Hex	Type	Len	Name (Dim)	Description
(0)	STRUCTURE	16	DFHWMRPS
(0)	UNSIGNED	1	WMRTYPE	Record type
(1)	BIT(8)	1	WMRRFLGS	Reserved
(2)	HALFWORD	2	WMRDATLN	Message data length i.e. number of bytes in record following WMREND
(4)	FULLWORD	4	WMRSEQNO	Message sequence number
(8)	CHARACTER	8	WMRIVN	Instance and version/queue
(8)	FULLWORD	4	WMRINSTN	Applicable instance number
(C)	FULLWORD	4	WMRVERSN	Version number
(C)	CHARACTER	4	WMRQNAME	Queue name
(10)	CHARACTER	0	WMREND	Start of message data

       Message Control Record

Table 2.
Offset Hex	Type	Len	Name (Dim)	Description
(0)	STRUCTURE	8	WMRCR
(0)	BIT(8)	1	*	Record type - WMRTCNO
(1)	CHARACTER	3	*	Reserved
(4)	FULLWORD	4	WMRCRCNO	Message cycle number
(8)	CHARACTER	0	WMRCREND

       VSAM CIDF Format

Table 3.
Offset Hex	Type	Len	Name (Dim)	Description
(0)	STRUCTURE	4	WMRCIDF
(0)	HALFWORD	2	WMRCIDFO	Offset of start of unused space in this CI.
(2)	HALFWORD	2	WMRCIDFL	Length of unused space in this CI.

       VSAM RDF Format

Table 4.
Offset Hex	Type	Len	Name (Dim)	Description
(0)	STRUCTURE	3	WMRRDF	Cancel data passed to KCP at WAIT.
(0)	BIT(8)	1	WMRRDFF	Flags - always zero in the subset used by XRF message manager.
(1)	HALFWORD	2	WMRRDFL	Length of record which corresponds to this RDF.

Constants

Table 5.
Len	Type	Value	Name	Description
Message Dataset Record Types (WMRTYPE)
1	DECIMAL	0	WMRTDATA	Message record
1	DECIMAL	1	WMRTCNO	Control record