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.

DFRMP

Prolog  

Control Block Contents  

DFRMP DSECT

Storage Layout  

Cross Reference (Contains links to field and bit definitions)  

DFRMP Prolog

 NAME       : HCPDFRMP
 DESCRIPTION: DDEV Frame Map
 DSECT      : DFRMP
 FUNCTION   : Maps storage frames used to temporarily store
              DDEVs associated with a particular user's
              directory entry
 LOCATED BY : DVMDIDAS
 CREATED BY : HCPUDR
 DELETED BY : HCPLGB
 SERIALIZED : A share of the directory lock is held when copying all of
              the DDEVs associated with a user's directory entry into
              DFRMP storage.

 

DFRMP Control Block Content


DFRMP DSECT

Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure DFRMP DDEV Frame Map 0000 0 Address 4 DFRNEXT Pointer to next temporary DDEV storage frame 0004 4 Signed 4 DFRDDVCT Count of DDEVs in this frame 0008 8 Signed 4 * (2) Reserved for IBM use 00000010 DFRHSIZE (*-DFRMP) Size of header in bytes **** THE VALUE OF DDEVSIZE FOR DATAMAP IS 7 00000048 DFRDDVSL (4096-DFRHSIZE)/(DDEVSIZE*8) The number of DDEV slots to a frame. 0010 16 Bitstring 1 DFRDDEV (0) Start of actual DDEV storage

 

DFRMP Storage Layout

*** DFRMP - DDEV Frame Map
*
*     +---------------------------+---------------------------+
*   0 |         DFRNEXT           |         DFRDDVCT          |
*     +---------------------------+---------------------------+
*   8 |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
*  10 |                                                       |
*     =                       DFRDDEV                         =
*     |                                                       |
*     +-------------------------------------------------------+
*
*** DFRMP - DDEV Frame Map

 

DFRMP Cross Reference

(contains links to field and bit definitions)
Symbol         Dspl Value
-------------- ---- -----

DFRDDEV 0010

DFRDDVCT 0004

DFRDDVSL 0008 00000048

DFRHSIZE 0008 00000010

DFRNEXT 0000


This information is based on VM/ESA 2.4.0.
Last updated on 3 Aug 1999 at 11:51:04 EDT.
Copyright IBM Corporation, 1990, 1999