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 7.3.0 Last updated on 22 Jun 2022 at 15:56:53 EDT.
Copyright IBM Corporation, 1990, 2022