TBFBK Back to Index page
 
Prolog 
Control Block Contents 
   TBFBK 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.


  TBFBK Prolog Top of page
  
 NAME       : HCPTBFBK
 DESCRIPTION: Trace service tool Buffer Format Block
 DSECT      : TBFBK
 FUNCTION   : Contains the format of the buffers used to
              save merged entries from the trace table
              onto tape
 CREATED BY : Not applicable
 DELETED BY : Not applicable
 RELOCATION CONSIDERATIONS : None
 NOTES      :
     USED BY - HCPTSI   : When building the buffers for
                          use by HCPTSMRG
               HCPTSMRG : When merging trace entries
               HCSTSF   : When reading the buffers from
                          tape
               HCSTSS   : Trace read system services
               HCSTSV   : Trace read tape processor
 
 
  TBFBK Control Block Content Top of page
  




 TBFBK DSECT
Top of page


Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      TBFBK          Trace service tool Buffer Format Block
0000    0 Dbl-Word     8 TBFTOD         Time of day clock
0008    8 Character   24 TBFVERST       Verification string
0020   32 Signed       4 TBFZONE        TIME ZONE DIFFERENTIAL (FROM
                                        SYSZONE)
0024   36 Bitstring   28 TBFDATA (145)  145 28-byte trace entries
          00000200       TBFSIZE        (*-TBFBK+7)/8 TBFBK size in
                                        doublewords
 
 
  TBFBK Storage Layout Top of page
  
          
*** TBFBK - Trace service tool Buffer Format Block
*
*     +-------------------------------------------------------+
*   0 |                        TBFTOD                         |
*     +-------------------------------------------------------+
*   8 |                                                       |
*     =                       TBFVERST                        =
*     |                                                       |
*     +---------------------------+---------------------------+
*  20 |         TBFZONE           |                           |
*     +---------------------------+                           |
*  28 |                                                       |
*     =                       TBFDATA                         =
*     |                                                       |
*     +-------------------------------------------------------+
*1000
*
*** TBFBK - Trace service tool Buffer Format Block
 
 
  TBFBK Cross Reference Top of page
  
 
Symbol         Dspl Value
-------------- ---- -----
TBFDATA        0024
TBFSIZE        0024 00000200
TBFTOD         0000
TBFVERST       0008
TBFZONE        0020
 
This information is based on z/VM 7.4.0 Last updated on 24 Jun 2024 at 11:34:36 EDT.
Copyright IBM Corporation, 1990, 2024