VUDBK

Prolog  

Control Block Contents  
   VUDBK DSECT

Storage Layout  

Cross Reference (Contains links to field and bit definitions)  

VUDBK Prolog

 NAME       : HCPVUDBK
 DESCRIPTION: Vestigial User Data Block
 DSECT      : VUDBK
 FUNCTION   : To contain Vestigial User Data (historical data for
              resources owned by the user which have since been
              destroyed).
 LOCATED BY : VMDVUDBK Field of a base VMDBK
 CREATED BY : VUDBKs are dynamically created by HCPASMDS or
              HCPASNRS when destroying an address space.
 DELETED BY : VUDBKs are deleted during log-off processing.
 SERIALIZED : Access to this control block is obtained by acquiring
              the owning user's VUDBK spin lock.

VUDBK Control Block Content

VUDBK DSECT

Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      VUDBK          Vestigial User Data Block
0000    0 Address      4 VUDOWNER       Pointer to (base) VMDBK of owning
                                        virtual configuration.
0004    4 Signed       4 *              Reserved for IBM use.
     Cumulative historical counts, accumulated while destroyed address
     spaces were private.
0008    8 Signed       4 VUDCPPST       Count of private address space
                                        pages stolen.
000C   12 Signed       4 VUDCPPGR       Count of private address space
                                        pages read from DASD.
0010   16 Signed       4 VUDCPPGW       Count of private address space
                                        pages written to DASD.
0014   20 Signed       4 VUDCPXRD       Count of private address space
                                        pages read from XSTORE.
0018   24 Signed       4 VUDCPXWT       Count of private address space
                                        pages written to XSTORE.
001C   28 Signed       4 VUDCPMIG       Count of private address space
                                        pages migrated by CP from XSTORE
                                        to DASD.
     Cumulative historical counts, accumulated while destroyed address
     spaces were shared.
0020   32 Signed       4 VUDCSPST       Count of shared address space
                                        pages stolen.
0024   36 Signed       4 VUDCSPGR       Count of shared address space
                                        pages read from DASD.
0028   40 Signed       4 VUDCSPGW       Count of shared address space
                                        pages written to DASD.
002C   44 Signed       4 VUDCSXRD       Count of shared address space
                                        pages read from XSTORE.
0030   48 Signed       4 VUDCSXWT       Count of shared address space
                                        pages written to XSTORE.
0034   52 Signed       4 VUDCSMIG       Count of shared address space
                                        pages migrated by CP from XSTORE
                                        to DASD.
          00000038       VUDLEN         *-VUDBK Length of VUDBK in bytes
          00000007       VUDSIZE        (*-VUDBK+7)/8 Size of VUDBK in
                                        doublewords

VUDBK Storage Layout

          
*** VUDBK - Vestigial User Data Block
*
*     +---------------------------+---------------------------+
*   0 |         VUDOWNER          |///////////////////////////|
*     +---------------------------+---------------------------+
*   8 |         VUDCPPST          |         VUDCPPGR          |
*     +---------------------------+---------------------------+
*  10 |         VUDCPPGW          |         VUDCPXRD          |
*     +---------------------------+---------------------------+
*  18 |         VUDCPXWT          |         VUDCPMIG          |
*     +---------------------------+---------------------------+
*  20 |         VUDCSPST          |         VUDCSPGR          |
*     +---------------------------+---------------------------+
*  28 |         VUDCSPGW          |         VUDCSXRD          |
*     +---------------------------+---------------------------+
*  30 |         VUDCSXWT          |         VUDCSMIG          |
*     +---------------------------+---------------------------+
*  38
*
*** VUDBK - Vestigial User Data Block

VUDBK Cross Reference

Symbol         Dspl Value
-------------- ---- -----
VUDCPMIG       001C
VUDCPPGR       000C
VUDCPPGW       0010
VUDCPPST       0008
VUDCPXRD       0014
VUDCPXWT       0018
VUDCSMIG       0034
VUDCSPGR       0024
VUDCSPGW       0028
VUDCSPST       0020
VUDCSXRD       002C
VUDCSXWT       0030
VUDLEN         0034 00000038
VUDOWNER       0000
VUDSIZE        0034 00000007