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.

RCCBK

Prolog  

Control Block Contents  

RCCBK DSECT

Storage Layout  

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 00000008 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

(contains links to field and bit definitions)
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 00000008

RCCNOINT 0040

RCCRCNUM 0010

RCCSAVL 004C 80

RCCSFQ 000C

RCCSFQL 0018

RCCSRCQ 0008

RCCSTFLG 004C

RCCSVNUM 0014

RCCURCQ 0000


This information is based on VM/ESA 2.4.0.
Last updated on 3 Aug 1999 at 12:27:04 EDT.
Copyright IBM Corporation, 1990, 1999