TDHBK Back to Index page
 
Prolog 
Control Block Contents 
   TDHBK 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.


  TDHBK Prolog Top of page
  
 NAME       : HCPTDHBK
 DESCRIPTION: TRACE SERVICE TOOL DIAGNOSE READ HEADER BLOCK
 DSECT      : TDHBK
 FUNCTION   : CONTAINS HEADER INFORMATION FOR DATA RELATED TO
              PROCESSING A DIAG X'E0'.
 LOCATED BY : VMDTDHBK
 CREATED BY : HCPTSD when processing a Diagnose x'E0' open request.
 DELETED BY : HCPTSD when processing a Diagnose x'E0' close request.
              HCPTSGDF 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
 
 
  TDHBK Control Block Content Top of page
  




 TDHBK DSECT
Top of page


Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      TDHBK          TRACE SERVICE TOOL DIAGNOSE READ HEADER BLOCK
0000    0 Character   24 TDHLCK         TDR chain lock
0018   24 Address      4 TDHTDRBK       TDR chain anchor
001C   28 Bitstring    1 TDH$END (0)    Defines end of control blk
 
 
  TDHBK Storage Layout Top of page
  
 
*** TDHBK - TRACE SERVICE TOOL DIAGNOSE READ HEADER BLOCK
*
*     +-------------------------------------------------------+
*   0 |                                                       |
*     =                        TDHLCK                         =
*     |                                                       |
*     +---------------------------+---------------------------+
*  18 |         TDHTDRBK          |
*     +---------------------------+
*
*** TDHBK - TRACE SERVICE TOOL DIAGNOSE READ HEADER BLOCK
 
 
  TDHBK Cross Reference Top of page
  
 
Symbol         Dspl Value
-------------- ---- -----
TDH$END        001C
TDHLCK         0000
TDHTDRBK       0018
 
This information is based on z/VM 6.4.0 Last updated on 24 Aug 2016 at 09:44:29 EDT.
Copyright IBM Corporation, 1990, 2016