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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. |
HSHAV
Cross Reference (Contains links to field and bit definitions)
HSHAV Prolog
NAME : HCPHSHAV
DESCRIPTION: Minidisk Cache Collision Node Available
List Block
DSECT : HSHAV
FUNCTION : Contains collision nodes used to manage hash
table collisions in the full track cache
hash table.
LOCATED BY : TCMAVLST (first CNODE).
TCMAVPAG anchors pages linked by HSHAVNPG
CREATED BY : HCPFTHIN (first block) and HCPFTHRD (subsequent)
DELETED BY : HCPFTHFL (flush cache)
COMMENTS : This block is used to manage hash table
available collision nodes. It keeps a pointer
to the next block containing collision nodes,
and a pointer to the first collision node in
the page that is available for use. Collision
nodes that are available are linked together in
a singly linked list.
HSHAV Control Block Content
HSHAV DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure HSHAV Minidisk Cache Collision Node Available 0000 0 Signed 4 HSHAVNPG Pointer to the next HSHAV page containing collision nodes. 0004 4 Signed 4 * Reserved for IBM use 0008 8 Character 16 HSHAVNOD (254) Collision nodes 000000FE HSHAVNTS 254 Count of entries 000001FD HSHAVLEN (*-HSHAV+7)/8 Size in double words
HSHAV Storage Layout
*** HSHAV - Minidisk Cache Collision Node Available * * +---------------------------+---------------------------+ * 0 | HSHAVNPG |///////////////////////////| * +---------------------------+---------------------------+ * 8 | | * = HSHAVNOD = * | | * +-------------------------------------------------------+ * FE8 * *** HSHAV - Minidisk Cache Collision Node Available
HSHAV Cross Reference
(contains links to field and bit definitions)Symbol Dspl Value -------------- ---- -----HSHAVLEN 0008 000001FD
HSHAVNOD 0008
HSHAVNPG 0000
HSHAVNTS 0008 000000FE
Last updated on 3 Aug 1999 at 12:04:47 EDT.
Copyright IBM Corporation, 1990, 1999