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Programming Interface Information:
This information is NOT
intended to be
used as Programming Interfaces of VM/ESA. It is to be used for diagnosis only. |
MSABK
Cross Reference (Contains links to field and bit definitions)
MSABK Prolog
NAME : HCPMSABK
DESCRIPTION: Map of Slot Allocation
DSECT : MSABK
FUNCTION : Slot bit map for page or spool EXTBK
LOCATED BY : EXTSTRCT
CREATED BY : - HCPPGU when extent is selected for
allocation.
- HCPPGT when reallocating spool slots
during IPL.
- HCPPGC when extent selected to use as
Dump space.
DELETED BY : HCPRDD when a CP-owned device is detached
from the system.
REFERENCES :
HCPEXTBK - Extent block
SERIALIZED : Page or Spool allocation lock
NOTES : none
NOTES - MS BK represents a maximum of 8000 slots.
MSABK Control Block Content
MSABK DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure MSABK Map of Slot Allocation 0000 0 Bitstring 1000 MSASLOTS Slot bit map...Each bit represents a slot in the EXTBK. If bit = 1, slot is in use. If bit = 0, slot is not in use. 0000007D MSASIZE (*-MSABK+7)/8 00001F40 MSAMAXSL 8000 Max number of slots per MSABK * end ASM version
MSABK Storage Layout
*** MSABK - Map of Slot Allocation * * +-------------------------------------------------------+ * 0 | | * = MSASLOTS = * | | * +-------------------------------------------------------+ * 3E8 * *** MSABK - Map of Slot Allocation
MSABK Cross Reference
(contains links to field and bit definitions)Symbol Dspl Value -------------- ---- -----MSAMAXSL 0000 00001F40
MSASIZE 0000 0000007D
MSASLOTS 0000
Last updated on 3 Aug 1999 at 12:15:13 EDT.
Copyright IBM Corporation, 1990, 1999