STHLF Back to Index page
 
Prolog 
Control Block Contents 
   STHLF DSECT
Storage Layout 
Cross Reference (Contains links to field and bit definitions)
Programming Interface Information:
This information is NOT intended to be
used as Programming Interfaces of z/VM.


  STHLF Prolog Top of page
  
 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.
 RELOCATION CONSIDERATIONS : None
 
 
  STHLF Control Block Content Top of page
  




 STHLF DSECT
Top of page


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   32 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 1536 STHCNTB        CONNECT TABLE
          00000630       STHSIZE        *-STHLF SIZE IN BYTES
          000000C6       STHSIZ8        (*-STHLF+7)/8 SIZE IN DOUBLEWORDS
 
 
  STHLF Storage Layout Top of page
  
          
*** STHLF - SUBSYSTEM TABLE HEADER BLOCK
*
*     +------+------+-------------+---------------------------+
*   0 |STHFLG|//////|  STHSSID    |          STHCFG           |
*     +------+------+-------------+-------------+-------------+
*   8 |  STHMXLK    |  STHCRLK    |  STHVDEV    |/////////////|
*     +-------------+-------------+-------------+-------------+
*  10 |                                                       |
*     =                       STHPTBL                         =
*     |                                                       |
*     +-------------------------------------------------------+
*  30 |                                                       |
*     =                       STHCNTB                         =
*     |                                                       |
*     +-------------------------------------------------------+
* 630
*
*** STHLF - SUBSYSTEM TABLE HEADER BLOCK
          
*** Overlay for STHPTBL in STHLF
*
*     +-------------+-------------+
*  10 |  STHMXLKP   |  STHCRLKP   | 14
*     +-------------+-------------+
*
*** Overlay for STHPTBL in STHLF
 
 
  STHLF Cross Reference Top of page
  
 
Symbol         Dspl Value
-------------- ---- -----
STHCFG         0004
STHCNNM        0012 00000040
STHCNTB        0030
STHCRLK        000A
STHCRLKP       0012
STHFLG         0000
STHLOCKS       0004 00000400
STHMXLK        0008
STHMXLKP       0010
STHPTBL        0010
STHPTLN        0012 00000004
STHPTNM        000E 00000008
STHSIZE        0030 00000630
STHSIZ8        0030 000000C6
STHSSID        0002
STHUSERS       000E 00000020
STHVDEV        000C
 
This information is based on z/VM 7.3.0 Last updated on 22 Jun 2022 at 15:56:34 EDT.
Copyright IBM Corporation, 1990, 2022