Programming Interface Information:
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AFFBK
Control Block Contents
AFFBK DSECT
Cross Reference (Contains links to field and bit definitions)
AFFBK Prolog
Name : HCPAFFBK Description: AFFinity management control BlocK DSECT : AFFBK Function : The AFFBK maps the storage in HCPRCC starting at label HCPRCCAF, extending for the length of this block. When the AFFBK is copied via the 'COPY' psuedo-op into any module other than HCPRCC, it will generate a DSECT. When copied in HCPRCC, however, it will generate code to actually define the fields. The AFFBK is used by the processor feature affinity management routines as an area to do bookkeeping and recording. Located by : HCPRCCAF is the address of the start of the block. Created by : The block is DCed in module HCPRCC. Deleted by : Never deleted Serialized : Alterations and references to the AFFBK are serialized by the Scheduler Lock.
AFFBK Control Block Content
AFFBK DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure AFFBK AFFinity management control BlocK workarea. 0000 0 Signed 4 AFFPFTR (31) Processor features A data area containing a fullword for each processor (indexed by PFXINDEX, or VMDHPLDV/2**5) describing the features available on each processor. 0000 0 Address 4 * Initialize for Master 007C 124 Address 4 AFFLFEAT Loadable features This is a mask of feature bits containing a one in the position of each feature which is "loadable". A feature which is loadable cannot be shared by VMDBKs without some work involved to accomplish the switch. This is a static mask. 00000080 AFFLEN *-AFFBK Length in bytes of the AFFBK 00000010 AFFSIZE (AFFLEN+7)/8 Size in doublewords of the AFFBK
AFFBK Storage Layout
*** AFFBK - AFFinity management control BlocK * * +-------------------------------------------------------+ * 0 | | * = AFFPFTR = * | +---------------------------+ * 78 | | AFFLFEAT | * +---------------------------+---------------------------+ * 80 * *** AFFBK - AFFinity management control BlocK *** Overlay for AFFPFTR in AFFBK * * +---------------------------+ * 0 |///////////////////////////| 4 * +---------------------------+ * *** Overlay for AFFPFTR in AFFBK
AFFBK Cross Reference
Symbol Dspl Value -------------- ---- ----- AFFLEN 007C 00000080 AFFLFEAT 007C AFFPFTR 0000 AFFSIZE 007C 00000010
Last updated on 5 Jun 2001 at 12:52:45 EDT.
Copyright IBM Corporation, 1990, 2001