FSDBK Back to Index page
 
Prolog 
Control Block Contents 
   FSDBK 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.


  FSDBK Prolog Top of page
  
 NAME       : HCPFSDBK
 DESCRIPTION: Free Storage Data Block
 DSECT      : FSDBK
 FUNCTION   : Maps the fixed free storage data area, includes
              the VMDBK formal spin lock.
 CREATED BY : not 'created'. Maps the entry point
              HCPRSMFL defined in the RSM data module.
 DELETED BY : Never deleted
 RELOCATION CONSIDERATIONS : None
 
 
  FSDBK Control Block Content Top of page
  




 FSDBK DSECT
Top of page


Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      FSDBK          Free Storage Data Block
             Free Storage Formal Spin Lock Data Area
      FSDVMLK covers  - Sysperm Free Storage List (HCPRSMSV/SB)
                      - VMDBK free storage
                      - Guestperm free storage List (HCPRSMFR/FB)
                      - VMDBK count of DWs in use (VMDVMDWU)
                      - Counts related to sysperm/guestperm
                        free storage (e.g. RSAFVMUD/RSAFVMUB,
                        RSAVMXUD/RSAVMXUB, RSASYSUD/RSASYSUB,
                        etc.)
0000    0 Dbl-Word     8 FSDVMLK (6)    Free Storage Formal Spin Lock
 
 
  FSDBK Storage Layout Top of page
  
          
*** FSDBK - Free Storage Data Block
*
*     +-------------------------------------------------------+
*   0 |                                                       |
*     =                       FSDVMLK                         =
*     |                                                       |
*     +-------------------------------------------------------+
*  30
*
*** FSDBK - Free Storage Data Block
 
 
  FSDBK Cross Reference Top of page
  
 
Symbol         Dspl Value
-------------- ---- -----
FSDVMLK        0000
 
This information is based on z/VM 7.3.0 Last updated on 22 Jun 2022 at 15:50:47 EDT.
Copyright IBM Corporation, 1990, 2022