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Programming Interface Information:
This information is NOT
intended to be
used as Programming Interfaces of VM/ESA. It is to be used for diagnosis only. |
DCD
Cross Reference (Contains links to field and bit definitions)
DCD Prolog
NAME : STRUCPRA DSECT : DCD STATUS : VM/ESA Version 1, Release 2.0 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
DCD DSECT
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 0 DCD_TSDLIST TSDs in class 00000198 DCD_SIZE *-DCD kernel run-time anchor block (one per thread)
DCD Storage Layout
*** DCD - Dispatch Class Descriptor * * +---------------------------+---------------------------+ * 0 | DCD_NEXT | DCD_PREV | * +---------------------------+---------------------------+ * 8 | DCD_RLTSD |///////////////////////////| * +---------------------------+---------------------------+ * *** DCD - Dispatch Class Descriptor
DCD Cross Reference
(contains links to field and bit definitions)Symbol Dspl Value -------------- ---- -----DCD_NEXT 0000
DCD_PREV 0004
DCD_RLTSD 0008
DCD_SIZE 0010 00000198
DCD_TSDLIST 0010
Last updated on 19 Aug 1999 at 15:30:02 EDT.
Copyright IBM Corporation, 1990, 1999