RQHDR Back to Index page
 
Prolog 
Control Block Contents 
   RQHDR 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.


  RQHDR Prolog Top of page
  
 NAME       : HCPRQHDR
 DESCRIPTION: SAVBK Return Queue Header Block
 DSECT      : RQHDR
 FUNCTION   : provide queue anchor for SAVBK's returned by
              SAVBK management functions
 LOCATED BY : SAVECPRQ in SAVBK
              PFXCPRQA in PFXPG
              SSACPRQ  in SSABK
              RCCSRCQ  in RCCBK
 CREATED BY : not created, part of SSABK and HCPRCC
 DELETED BY : not deleted
 SERIALIZED : compare double and swap logic
 RELOCATION CONSIDERATIONS : None
 
 
  RQHDR Control Block Content Top of page
  




 RQHDR DSECT
Top of page


Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      RQHDR          SAVBK Return Queue Header Block
0000    0 Signed       4 RQHCOUNT       Count of SAVBK's on queue
0004    4 Address      4 RQHQUEUE       Queue of SAVBK's
          00000001       RQHSIZE        (*-RQHDR+7)/8 Size of RQHDR in
                                        dwords
          00000008       RQHLEN         (*-RQHDR) Length of RQHDR
 
 
  RQHDR Storage Layout Top of page
  
          
*** RQHDR - SAVBK Return Queue Header Block
*
*     +---------------------------+---------------------------+
*   0 |         RQHCOUNT          |         RQHQUEUE          |
*     +---------------------------+---------------------------+
*   8
*
*** RQHDR - SAVBK Return Queue Header Block
 
 
  RQHDR Cross Reference Top of page
  
 
Symbol         Dspl Value
-------------- ---- -----
RQHCOUNT       0000
RQHLEN         0004 00000008
RQHQUEUE       0004
RQHSIZE        0004 00000001
 
This information is based on z/VM 7.3.0 Last updated on 22 Jun 2022 at 15:54:28 EDT.
Copyright IBM Corporation, 1990, 2022