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 6.4.0 Last updated on 24 Aug 2016 at 09:25:08 EDT.
Copyright IBM Corporation, 1990, 2016