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Programming Interface Information:
This information is NOT intended to be used as Programming Interfaces of z/VM. |
FSDBK
Control Block Contents
FSDBK DSECT
Cross Reference (Contains links to field and bit definitions)
FSDBK Prolog
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
FSDBK DSECT
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
*** FSDBK - Free Storage Data Block
*
* +-------------------------------------------------------+
* 0 | |
* = FSDVMLK =
* | |
* +-------------------------------------------------------+
* 30
*
*** FSDBK - Free Storage Data Block
FSDBK Cross Reference
Symbol Dspl Value -------------- ---- ----- FSDVMLK 0000
Copyright IBM Corporation, 1990, 2011