SYMLH Back to Index page
 
Prolog 
Control Block Contents 
   SYMLH 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.


  SYMLH Prolog Top of page
 
 NAME       : HCPSYMLH
 DESCRIPTION: Symbol LOCATE Header Block
 DSECT      : SYMLH
 FUNCTION   : The Symbol LOCATE Header Block locates and controls the
              SYMPT blocks and their SYMTB entries, which are used
              by the LOCATE command, and other locate facilities in
              CP, to locate and identify CP external labels.
 LOCATED BY : SYSLOCAT in SYSCM.
 CREATED BY : HCPCFDIN during system initialization.
 DELETED BY : None
 REFERENCES : None
 SERIALIZED : Additions or changes to the SYMPT entries and to the
              SYMTB entries require exclusive control of the
              SYMLHLCK lock.
              Searches of the SYMPT entries and of the SYMTB entries
              require shared control of the SYMLHLCK lock.
 RELOCATION CONSIDERATIONS : None
 
 
  SYMLH Control Block Content Top of page
 

 SYMLH DSECT Top of page
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure SYMLH Symbol LOCATE Header Block 0000 0 Dbl-Word 8 SYMLHLCK (3) Lock word. 0018 24 Address 4 SYMLHPT1 Address of first SYMPT 001C 28 Character 1 SYMLHEND (0) The end
 
 
  SYMLH Storage Layout Top of page
 
          
*** SYMLH - Symbol LOCATE Header Block
*
*     +-------------------------------------------------------+
*   0 |                                                       |
*     =                       SYMLHLCK                        =
*     |                                                       |
*     +---------------------------+---------------------------+
*  18 |         SYMLHPT1          |
*     +---------------------------+
*
*** SYMLH - Symbol LOCATE Header Block
 
 
  SYMLH Cross Reference Top of page
 
 
Symbol         Dspl Value
-------------- ---- -----
SYMLHEND       001C
SYMLHLCK       0000
SYMLHPT1       0018
 
This information is based on z/VM 7.3.0 Last updated on 22 Jun 2022 at 15:56:44 EDT.
Copyright IBM Corporation, 1990, 2022