Programming Interface Information: This information is NOT intended to be
used as Programming Interfaces of z/VM.

RQHDR

Prolog
Control Block Contents
RQHDR DSECT
Storage Layout
Cross Reference

RQHDR Prolog

 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
 

RQHDR Control Block Content

RQHDR DSECT

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

          
*** RQHDR - SAVBK Return Queue Header Block
*
*     +---------------------------+---------------------------+
*   0 |         RQHCOUNT          |         RQHQUEUE          |
*     +---------------------------+---------------------------+
*   8
*
*** RQHDR - SAVBK Return Queue Header Block
 

RQHDR Cross Reference

Symbol         Dspl Value
-------------- ---- -----
RQHCOUNT       0000
RQHLEN         0004 00000008
RQHQUEUE       0004
RQHSIZE        0004 00000001
This information is based on z/VM V3R1.0.
Last updated on 30 Mar 2001 at 08:36:46 EDT.
Copyright IBM Corporation, 1990, 2001