REQBK

Prolog  

Control Block Contents  
   REQBK DSECT

Storage Layout  

Cross Reference (Contains links to field and bit definitions)  

REQBK Prolog

 NAME       : HCPREQBK
 DESCRIPTION: Request block
 DSECT      : REQBK
 FUNCTION   : This DSECT maps each entry in a list of
              unique requests.
 LOCATED BY : Dependent on the function using this
              generic control block.
 CREATED BY : Dependent on the function using this
              generic control block.
 DELETED BY : Dependent on the function using this
              generic control block.
 SERIALIZED : Request block chain lock defined by the
              function.
 COMMENTS   : This control block is defined to be a
              generic control block for functions that
              need to manage requests. For example, it
              can be used to match a request and its
              asynchronous response.
              This block should be used in conjunction
              with the HCPREQST macro, which manages a
              queue of REQBKs.

REQBK Control Block Content

REQBK DSECT

Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      REQBK          Request block
0000    0 Address      4 REQNEXT        Address of the next REQBK in the
                                        list.
0004    4 Signed       4 REQREQID       Request ID - a unique token
                                        representing this request.
0008    8 Character   48 REQUDATA       User-defined data for this
                                        request.
     Length of the block
          00000007       REQSIZE        (*-REQBK+7)/8 REQBK size in
                                        doublewords
          00000038       REQBSIZE       *-REQBK REQBK size in bytes

REQBK Storage Layout

          
*** REQBK - Request block
*
*     +---------------------------+---------------------------+
*   0 |         REQNEXT           |         REQREQID          |
*     +---------------------------+---------------------------+
*   8 |                                                       |
*     =                       REQUDATA                        =
*     |                                                       |
*     +-------------------------------------------------------+
*  38
*
*** REQBK - Request block

REQBK Cross Reference

Symbol         Dspl Value
-------------- ---- -----
REQBSIZE       0008 00000038
REQNEXT        0000
REQREQID       0004
REQSIZE        0008 00000007
REQUDATA       0008