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 Top of page
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 7.3.0 Last updated on 22 Jun 2022 at 16:01:56 EDT.
Copyright IBM Corporation, 1990, 2022