TDRBK | Back to Index page

| Prolog Control Block Contents TDRBK DSECT Storage Layout Cross Reference (Contains links to field and bit definitions) |
Programming Interface Information: This information is NOT intended to be used as Programming Interfaces of z/VM.

TDRBK Prolog | Top of page

     NAME       : HCPTDRBK
     DESCRIPTION: TRACE SERVICE TOOL DIAGNOSE READ
                  INFORMATION BLOCK
     DSECT      : TDRBK
     FUNCTION   : Contains data related for processing a Diag x'E0'
     LOCATED BY : VMDTDRBK
     CREATED BY : HCPTSD when processing a Diagnose x'E0' open request.
     DELETED BY : HCPTSD when processing a Diagnose x'E0' close request.
                  HCPTSDDF when user is logging off.
      MPLOYED BY - HCPTSD when processing a Diagnose X'E0' for
                  open, read or close requests.
     REFERENCES : None
     RELOCATION CONSIDERATIONS : None
     COMMENTS   : None

TDRBK Control Block Content | Top of page

     TDRBK DSECT
    Top of page

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      TDRBK          TRACE SERVICE TOOL DIAGNOSE READ
    0000    0 Address      4 TDRNEXTP       Pointer to next TDR block. If 0
                                            then end of chain has been
                                            reached.
    0004    4 Address      4 TDRBACKP       Pointer to previous TDR block.
    0008    8 Address      4 TDRSDFBK       Pointer to SDF block.
    000C   12 Bitstring    1 TDR$END (0)    Defines end of control block

TDRBK Storage Layout | Top of page

    *** TDRBK - TRACE SERVICE TOOL DIAGNOSE READ
    *
    *     +---------------------------+---------------------------+
    *   0 |         TDRNEXTP          |         TDRBACKP          |
    *     +---------------------------+---------------------------+
    *   8 |         TDRSDFBK          |
    *     +---------------------------+
    *
    *** TDRBK - TRACE SERVICE TOOL DIAGNOSE READ

TDRBK Cross Reference | Top of page

    Symbol         Dspl Value
    -------------- ---- -----
    TDR$END        000C
    TDRBACKP       0004
    TDRNEXTP       0000
    TDRSDFBK       0008

This information is based on z/VM 7.2.0 Last updated on 24 Jun 2020 at 09:31:15 EDT.
Copyright IBM Corporation, 1990, 2020