|
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. |
CKPBK
Cross Reference (Contains links to field and bit definitions)
CKPBK Prolog
NAME : HCPCKPBK
DESCRIPTION: SYSTEM CHECK POINT CONTROL BLOCK
DSECT : CKPBK
FUNCTION : DOCUMENTS THE PROGRESS OF THE CHECKPOINT PROCESS BY
RECORDING THE STARTING AND ENDING TIMES OF EACH DATA
COLLECTION, THE DASD EXTENT OF THE COLLECTED DATA, AND
THE DASD LOCATION OF THAT DATA. THUS, THE CKPBK CHECKPOINTS
THE PROGRESS OF THE CHECKPOINT PROCESS WHILE MAINTAINING A
DIRECTORY OF THE DATA FILES CREATED DURING THAT PROCESS.
LOCATED BY : SYSCKPS - POINTER TO FIRST CHECKPOINT CYLINDER ON SYSRES
ON WHICH THE CKPBK IS THE FIRST RECORD
CREATED BY : HCPCKPSH - DURING SYSTEM SHUTDOWN OR ABNORMAL TERMINATION
HCPCKPRS - BEFORE SYSTEM INITIALIZATION
DELETED BY : NEVER DELETED; ALWAYS REFRESHED
CKPBK Control Block Content
CKPBK DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure CKPBK SYSTEM CHECK POINT CONTROL BLOCK CHECKPOINT ENTRY STATUS DESCRIPTORS 0000 0 Character 8 CKPBKID EYECATCHER FOR IDENTIFICATION 0008 8 Dbl-Word 8 CKPBKSUM (3) OVERALL CHECKPOINT STATUS 0020 32 Dbl-Word 8 CKPENAB (3) RDEV ENABLE STATUS 0038 56 Dbl-Word 8 CKPLOGM (3) LOG MESSAGES 0050 80 Dbl-Word 8 CKPHOLDQ (3) HOLD QUEUES 0068 104 Dbl-Word 8 CKPCPVL (3) CPVOL BLOCKS 0080 128 Dbl-Word 8 CKPRSPB (3) RSPBLOKS 0098 152 Dbl-Word 8 CKPSACCT (3) RESIDUAL ACCOUNTING RECORDS 00B0 176 Dbl-Word 8 CKPCACCT (3) GENERATED ACCOUNTING RECORDS 00C8 200 Dbl-Word 8 CKPDELQ (3) DELETE QUEUE MISCELLANEOUS CHECKPOINT DATA ITEMS 00E0 224 Signed 4 CKPVLMAX HIGHEST CPVOL USED AT SHUTDOWN 00E4 228 Signed 4 CKPDSPID SYSTEM ABEND DUMP SPOOL FILE ID 00E8 232 Signed 4 CKPNSPID NEXT AVAILABLE SYSTEM SPOOL FILE ID 00EC 236 Signed 4 CKPCKSEQ Clock Sequence number. Used by diagnose x'238'. POWEROFF Checkpoint Data Item 00F0 240 Signed 4 CKPPWROF Will contain C'POWR' if active or 'PMPT' if Prompt requested 00000000 CKPTIME1 0,8 START TIME 00000008 CKPTIME2 CKPTIME1+L'CKPTIME1,L'CKPTIME1 END TIME 00000010 CKPBLKS CKPTIME2+L'CKPTIME2,4 START BLOCK 00000014 CKPBLKN CKPBLKS+L'CKPBLKS,L'CKPBLKS BLOCK COUNT 00000018 CKPENTLN (((CKPBLKN+L'CKPBLKN)-CKPTIME1+7) /8)*8 0000001F CKPSIZE (*-CKPBK+7)/8 CKPBK SIZE IN DOUBLE-WORDS
CKPBK Storage Layout
*** CKPBK - SYSTEM CHECK POINT CONTROL BLOCK * * +-------------------------------------------------------+ * 0 | CKPBKID | * +-------------------------------------------------------+ * 8 | | * = CKPBKSUM = * | | * +-------------------------------------------------------+ * 20 | | * = CKPENAB = * | | * +-------------------------------------------------------+ * 38 | | * = CKPLOGM = * | | * +-------------------------------------------------------+ * 50 | | * = CKPHOLDQ = * | | * +-------------------------------------------------------+ * 68 | | * = CKPCPVL = * | | * +-------------------------------------------------------+ * 80 | | * = CKPRSPB = * | | * +-------------------------------------------------------+ * 98 | | * = CKPSACCT = * | | * +-------------------------------------------------------+ * B0 | | * = CKPCACCT = * | | * +-------------------------------------------------------+ * C8 | | * = CKPDELQ = * | | * +---------------------------+---------------------------+ * E0 | CKPVLMAX | CKPDSPID | * +---------------------------+---------------------------+ * E8 | CKPNSPID | CKPCKSEQ | * +---------------------------+---------------------------+ * F0 | CKPPWROF | F4 * +---------------------------+ * *** CKPBK - SYSTEM CHECK POINT CONTROL BLOCK
CKPBK Cross Reference
(contains links to field and bit definitions)Symbol Dspl Value -------------- ---- -----CKPBKID 0000
CKPBKSUM 0008
CKPBLKN 00F0 00000014
CKPBLKS 00F0 00000010
CKPCACCT 00B0
CKPCKSEQ 00EC
CKPCPVL 0068
CKPDELQ 00C8
CKPDSPID 00E4
CKPENAB 0020
CKPENTLN 00F0 00000018
CKPHOLDQ 0050
CKPLOGM 0038
CKPNSPID 00E8
CKPPWROF 00F0
CKPRSPB 0080
CKPSACCT 0098
CKPSIZE 00F0 0000001F
CKPTIME1 00F0 00000000
CKPTIME2 00F0 00000008
CKPVLMAX 00E0
Last updated on 3 Aug 1999 at 11:45:39 EDT.
Copyright IBM Corporation, 1990, 1999