WSA - XRF CAVM surveillance status

    CONTROL BLOCK NAME = DFHWSADS
    NAME OF MATCHING PLS CONTROL BLOCK = DFHWSAPS
    DESCRIPTIVE NAME = CICS TS (XRF) - CAVM Surveillance Status
                                           Control Blocks
           Licensed Materials - Property of IBM
            Restricted Materials of IBM 
           5655-Y04
           (C) Copyright IBM Corp. 1985, 1990 
    FUNCTION =
           The various CAVM Surveillance Status Control Blocks exist
           to permit the 4 independent CAVM surveillance processes
           (2 status writers and 2 status readers) to communicate with
           other CAVM processes and with each other.
           Each XRF system contains a single set of these Surveillance
           Status Control Blocks.
    LIFETIME =
           The Surveillance Status Control Block, Public Status Area
           Descriptors and Public Status Areas in a given XRF system
           are all created at the same time during CAVM SIGNON by
           DFHWSSN2.
           The actual Status CIs are created by DFHWSSN3 as records
           filled with binary zeroes when it formats a new CAVM Control
           or Message Data Set. They are never destroyed except by
           deletion of the data set.
    STORAGE CLASS =
           Non-CICS storage. In MVS subpool 0 above the 16M line.
           The Status CIs themselves reside on DASD in the CAVM Control
           or Message Data Sets or in I/O buffers in MVS subpool 0
           above the 16M line.
    LOCATION =
           Field WCGSA in the CAVM Global Control Block (DFHWCGDS)
           contains a pointer to the Surveillance Status Control
           Block (DFHWSADS), which itself includes an array of Public
           Status Area Descriptors (WSADs) starting at WSAGWSAD.
    INNER CONTROL BLOCKS =
         See FUNCTION and LOCATION.
    NOTES :
       DEPENDENCIES = S/370
       RESTRICTIONS =
             Status Record must not become too large to fit in a 4K CI.
       MODULE TYPE = Control block definition
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    EXTERNAL REFERENCES =
            None.
        DATA AREAS =
            None.
        CONTROL BLOCKS =
            None.
        GLOBAL VARIABLES (Macro pass) =
            None.
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