Programming Interface Information:
This information is NOT intended to be
used as Programming Interfaces of z/VM. |
RCCBK
Control Block Contents
RCCBK DSECT
Cross Reference (Contains links to field and bit definitions)
RCCBK Prolog
NAME : HCPRCCBK DESCRIPTION: RCPU DATA AREA MAPPING DSECT : RCCBK FUNCTION : This control block maps the RCPU data area and defines constants used by the RCPU subsystem. LOCATED IN - HCPRCCCM - RPCU common data area CREATED BY : System initialization DELETED BY : System termination SERIALIZED :
RCCBK Control Block Content
RCCBK DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure RCCBK RCPU DATA AREA MAPPING SAVBK management zappable constants and queues 0000 0 Dbl-Word 8 RCCURCQ SAVBK reclaim queue (unsorted) 0008 8 Address 4 RCCSRCQ SAVBK reclaim queue (sorted) 000C 12 Address 4 RCCSFQ SAVE frame queue 0010 16 Signed 4 RCCRCNUM Number of SAVBKs being reclaimed 0014 20 Signed 4 RCCSVNUM Number of SAVBKs allocated 0018 24 Dbl-Word 8 RCCSFQL (3) SAVE frame queue lock 0030 48 Signed 8 RCCICFAB Incomplete frame reclaim time limit 0038 56 Signed 8 RCCLNINT HCPSAMFS sampling period, 10 sec. 0040 64 Signed 4 RCCNOINT Number of intervals to average .... 1... RCCMXAVS 8 Scaling factor for below &VX1NASG 0044 68 Signed 4 RCCMAXAV Maximum percentage of buffers available 0048 72 Signed 4 RCCMINSV Minimum number of saveareas per processor 004C 76 Address 1 RCCSTFLG Free storage availability flags 1... .... RCCSAVL X'80' Free storage available for SAVBKs 004D 77 Bitstring 1 * (3) Reserved for future IBM use MP Defer Data Area Checkpoint determination intervals 0050 80 Signed 8 RCCMPDLY 1/10 second, until adjusted by HCPISR to be a function of the minor timeslice. 0058 88 Dbl-Word 8 * Reserved for IBM use 0060 96 Address 1 RCCMPDAC MP Defer Active Test & Set flag 0061 97 Bitstring 3 * Reserved "CP Loss of Control" deferred work queues 0064 100 Address 4 RCCMPCQ0 Work for which 0 or more MP checkpoints have occurred 0068 104 Address 4 RCCMPCQ1 Work for which 1 or more MP checkpoints have occurred "Loss of Control" deferred work queues 006C 108 Address 4 RCCMPSQ0 Work for which 0 or more MP checkpoints have occurred 0070 112 Address 4 RCCMPSQ1 Work for which 1 or more MP checkpoints have occurred
RCCBK Storage Layout
*** RCCBK - RCPU DATA AREA MAPPING * * +-------------------------------------------------------+ * 0 | RCCURCQ | * +---------------------------+---------------------------+ * 8 | RCCSRCQ | RCCSFQ | * +---------------------------+---------------------------+ * 10 | RCCRCNUM | RCCSVNUM | * +---------------------------+---------------------------+ * 18 | | * = RCCSFQL = * | | * +-------------------------------------------------------+ * 30 | RCCICFAB | * +-------------------------------------------------------+ * 38 | RCCLNINT | * +---------------------------+---------------------------+ * 40 | RCCNOINT | RCCMAXAV | * +---------------------------+------+--------------------+ * 48 | RCCMINSV |:STFLG|////////////////////| * +---------------------------+------+--------------------+ * 50 | RCCMPDLY | * +-------------------------------------------------------+ * 58 |///////////////////////////////////////////////////////| * +------+--------------------+---------------------------+ * 60 |:MPDAC|////////////////////| RCCMPCQ0 | * +------+--------------------+---------------------------+ * 68 | RCCMPCQ1 | RCCMPSQ0 | * +---------------------------+---------------------------+ * 70 | RCCMPSQ1 | 74 * +---------------------------+ * *** RCCBK - RCPU DATA AREA MAPPING
RCCBK Cross Reference
Symbol Dspl Value -------------- ---- ----- RCCICFAB 0030 RCCLNINT 0038 RCCMAXAV 0044 RCCMINSV 0048 RCCMPCQ0 0064 RCCMPCQ1 0068 RCCMPDAC 0060 RCCMPDLY 0050 RCCMPSQ0 006C RCCMPSQ1 0070 RCCMXAVS 0040 08 RCCNOINT 0040 RCCRCNUM 0010 RCCSAVL 004C 80 RCCSFQ 000C RCCSFQL 0018 RCCSRCQ 0008 RCCSTFLG 004C RCCSVNUM 0014 RCCURCQ 0000
Last updated on 5 Jun 2001 at 16:20:27 EDT.
Copyright IBM Corporation, 1990, 2001