DCD Back to Index page
 
Prolog 
Control Block Contents 
   DCD 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.


  DCD Prolog Top of page
  
 NAME       : STRUCPRA
 DSECT      : DCD
 DESCRIPTION: Dispatch Class Descriptor
 FUNCTION   : Describes a set of threads wherein only one
              may run at a time and wherein control loss
              among the members in the set is always
              voluntary
 
 
  DCD Control Block Content Top of page
  




 DCD DSECT
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Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      DCD            Dispatch Class Descriptor
0000    0 Dbl-Word     8 * (0)
0000    0 Address      4 DCD_NEXT       next DCD
0004    4 Address      4 DCD_PREV       previous DCD
0008    8 Address      4 DCD_RLTSD      TSD on run list
000C   12 Signed       4 *              Reserved
0010   16 Character  392 DCD_TSDLIST    TSDs in class
          00000198       DCD_SIZE       *-DCD
          kernel run-time anchor block (one per thread)
 
 
  DCD Storage Layout Top of page
  
 
*** DCD - Dispatch Class Descriptor
*
*     +---------------------------+---------------------------+
*   0 |         DCD_NEXT          |         DCD_PREV          |
*     +---------------------------+---------------------------+
*   8 |        DCD_RLTSD          |///////////////////////////|
*     +---------------------------+---------------------------+
*  10 |                                                       |
*     =                     DCD_TSDLIST                       =
*     |                                                       |
*     +-------------------------------------------------------+
* 198
*
*** DCD - Dispatch Class Descriptor
 
 
  DCD Cross Reference Top of page
  
 
Symbol         Dspl Value
-------------- ---- -----
DCD_NEXT       0000
DCD_PREV       0004
DCD_RLTSD      0008
DCD_SIZE       0010 00000198
DCD_TSDLIST    0010
 
This information is based on z/VM 6.4.0.
Last updated on 24 Aug 2016 at 09:22:01 EDT.
Copyright IBM Corporation, 1990, 2016