IBM: STHLF

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.

STHLF

Prolog

Control Block Contents

STHLF DSECT

Storage Layout

Cross Reference (Contains links to field and bit definitions)

STHLF Prolog

 NAME       : HCPSTHLF
 DESCRIPTION: SUBSYSTEM TABLE HEADER BLOCK
 DSECT      : STHLF
 FUNCTION   : HCPSTHLF DESCRIBES THE SUBSYSTEM TABLE HEADER AREA
              USED BY HCPLFP TO STORE ALL INFORMATION RELATED TO
              A SIMULATED CFLF SUBSYSTEM. THERE IS ONE STH PER
              SUBSYSTEM.
 LOCATED BY : None
              CFGSTH/CFGSSID IN HCPCFGLF
 CREATED BY : None
              HCPLFCST
 DELETED BY : None
              HCPLFCST, HCPLFCRL
 SERIALIZED : CFLF CONFIGURATION LOCK.

STHLF Control Block Content


STHLF DSECT
Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      STHLF          SUBSYSTEM TABLE HEADER BLOCK
0000    0 Bitstring    1 STHFLG         HEADER FLAGS
0001    1 Bitstring    1 *              RESERVED FOR IBM USE
0002    2 Bitstring    2 STHSSID        SUBSYSTEM ID
0004    4 Address      4 STHCFG         ADDRESS OF CONFIGURATION BLOCK
          00000400       STHLOCKS       1024 DEFAULT SUBSYSTEM LOCK SPACE
     THE MAXIMUM AND CURRENT LOCK COUNTS FOR ALL PARTITIONS IS MAINTAINED SO
     THAT THE OUT OF/QUEUED FOR RESOURCES CONDITION CAN BE EASILY SIMULATED.
0008    8 Bitstring    2 STHMXLK        MAXIMUM LOCK SPACE FOR SUBSYSTEM
000A   10 Bitstring    2 STHCRLK        CURRENTLY AVAILABLE LOCK SPACE
000C   12 Bitstring    2 STHVDEV        BASE DEVICE ADDRESS FOR SUBSYSTEM
000E   14 Bitstring    2 *              RESERVED FOR IBM USE
          00000008       STHPTNM        8 NUMBER OF PARTITIONS LIMIT
          00000020       STHUSERS       32 NUMBER OF USERS LIMIT
0010   16 Bitstring    0 STHPTBL        PARTITION TABLE
     THE MAXIMUM AND CURRENT LOCK COUNTS FOR EACH PARTITION MUST ALSO BE
     MAINTAINED SINCE A PARTITION CAN BE ESTABLISHED WITH LESS THAN THE
     TOTAL ALLOCATED LOCKS.
0010   16 Bitstring    2 STHMXLKP       MAXIMUM LOCKS FOR PARTITION
0012   18 Bitstring    2 STHCRLKP       IN-USE LOCKS FOR PARTITION
          00000004       STHPTLN        *-STHMXLKP LENGTH OF A PARTITION
                                        TABLE ENTRY
          00000040       STHCNNM        (4*16) MAXIMUM # CONNECTS ALLOWED
0030   48 Bitstring    0 STHCNTB        CONNECT TABLE
          00000CB0       STHSIZE        *-STHLF SIZE IN BYTES
          00000196       STHSIZ8        (*-STHLF+7)/8 SIZE IN DOUBLEWORDS

STHLF Storage Layout

*** STHLF - SUBSYSTEM TABLE HEADER BLOCK
*
*     +------+------+-------------+---------------------------+
*   0 |STHFLG|//////|  STHSSID    |          STHCFG           |
*     +------+------+-------------+-------------+-------------+
*   8 |  STHMXLK    |  STHCRLK    |  STHVDEV    |/////////////|
*     +-------------+-------------+-------------+-------------+
*  10 |                                                       |
*     =                       STHPTBL                         =
*     |                                                       |
*     +-------------------------------------------------------+
*  30 |                                                       |
*     =                       STHCNTB                         =
*     |                                                       |
*     +-------------------------------------------------------+
*  50 |///////////////////////////////////////////////////////|
*     =///////////////////////////////////////////////////////=
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
*
*** STHLF - SUBSYSTEM TABLE HEADER BLOCK
*** Overlay for STHPTBL in STHLF
*
*     +-------------+-------------+
*  10 |  STHMXLKP   |  STHCRLKP   | 14
*     +-------------+-------------+
*
*** Overlay for STHPTBL in STHLF