SDBBK Back to Index page
 
Prolog 
Control Block Contents 
   SDBBK DSECT
   SDBLSENT 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.


  SDBBK Prolog Top of page
 
 NAME       : HCPSDBBK
 DESCRIPTION: ISFC Send Data Buffer block
 DSECT      : SDBBK
 FUNCTION   : Maintain information about an ISFC send data
              buffer for bunched send support on APPC/VM.
 LOCATED BY : HCPCMS    points to the mailbox entries.
 CREATED BY : HCPCMS    part of the resident data.
 DELETED BY : Does not apply (data contained within a module).
 SERIALIZED : The ISFC global lock (HCPBDSGL).
 RELOCATION CONSIDERATIONS : None
 
 
  SDBBK Control Block Content Top of page
 

 SDBBK DSECT Top of page
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure SDBBK ISFC Send Data Buffer block SDBBK management. 0000 0 Signed 4 SDBMDEQ BUNCHED SENDDATA MDE QUEUE 0004 4 Signed 4 * (3) Reserved 00000010 SDBHDRSZ *-SDBBK LENGTH OF HEADER IN SDBBK 0010 16 Dbl-Word 8 * (0) ENSURE DOUBLE WORD ALIGNMENT 00000010 SDBBFLST * VARIABLE LENGTH BUFFER LIST OF ADDRESSES AND DATA LENGTHS
 SDBLSENT DSECT Top of page
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure SDBLSENT ISFC Send Data Buffer block SDBLSENT management. 0000 0 Signed 4 SDBLSADD REAL ADDRESS OF LIST ENTRY 0004 4 Signed 4 SDBLSLEN LENGTH OF LIST ENTRY 00000008 SDBLSIZE *-SDBLSENT SIZE OF ENTRY IN BUFFER LIST
 
 
  SDBBK Storage Layout Top of page
 
          
*** SDBBK - ISFC Send Data Buffer block
*
*     +---------------------------+---------------------------+
*   0 |         SDBMDEQ           |///////////////////////////|
*     +---------------------------+///////////////////////////|
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
*  10
*
*** SDBBK - ISFC Send Data Buffer block
          
*** SDBLSENT - ISFC Send Data Buffer block
*
*     +---------------------------+---------------------------+
*   0 |         SDBLSADD          |         SDBLSLEN          |
*     +---------------------------+---------------------------+
*   8
*
*** SDBLSENT - ISFC Send Data Buffer block
 
 
  SDBBK Cross Reference Top of page
 
 
Symbol         Dspl Value
-------------- ---- -----
SDBBFLST       0010 00000010
SDBHDRSZ       0004 00000010
SDBLSADD       0000
SDBLSIZE       0004 00000008
SDBLSLEN       0004
SDBMDEQ        0000
 
This information is based on z/VM 7.3.0 Last updated on 22 Jun 2022 at 15:54:50 EDT.
Copyright IBM Corporation, 1990, 2022