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. |
BLEBK
Cross Reference (Contains links to field and bit definitions)
BLEBK Prolog
NAME : HCPBLEBK DESCRIPTION: CP application interface table ctl block STATUS : VM/ESA Version 2, Release 3.0 DSECT : BLEBK FUNCTION : Maintain a table of shared control blocks, and service handles. LOCATED BY : Dependent on the function using this generic control block. CREATED BY : Dependent on the function using this generic control block. DELETED BY : Dependent on the function using this generic control block. SERIALIZED : BLELKWRD lock. This lock would only be destroyed if ISFC is not active. Serialization handled by the functions that manipulate the table. NOTES : The BLEHD table header can be allocated or pre-defined. If allocated, it must have been allocated prior to invoking any of the utilities that manipulate the BLEBK tables. The BLEFM and BLEBK tables are dynamically allocated by the BLEBK utilities. This is a general 2-step table for any type of control block. BLEHD +---------------+ | BLELKWRD | |---------------| | BLETPTR | | BLEFM table ----+ |---------------| | | BLEHI | | |---------------| | | | | | | | +---------------+ | | +---------+ | | | V | V +---------------+ | +----------+ | BLEFM | | | BLEBK ------> control | BLEBK table ------+ |----------| block @ |---------------| | BLEBK ----+ | BLEFM | |----------| | | BLEBK table ------+ | . | +-> control +---------------+ | | . | block @ | | . | | +----------+ +---------+ V +----------+ | BLEBK ------> control |----------| block @ | BLEBK ----+ |----------| | | . | +-> control | . | block @ | . | +----------+
BLEBK Control Block Content
BLEBK DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure BLEBK CP application interface table ctl block BLEBK Table entry 0000 0 Signed 4 BLETOK Token value 0004 4 Address 4 BLEPTR Target block address 00000001 BLESIZE (*-BLEBK+7)/8 Size, in doublewords, of BLEBK 00000008 BLEHNDTL 8 Number of bits in a handle used to hold the instance BLEHD table headerBLEHD DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure BLEHD CP application interface table ctl block Interface table lock controls. 0000 0 Dbl-Word 8 BLELKWRD (3) Table lock 0018 24 Bitstring 8 BLELKTRC Table lock trace values Table pointers 0020 32 Address 4 BLETPTR Table address 0024 36 Address 4 BLETEND Points past the end of the table 0028 40 Signed 4 BLEHI Highest valid token Binary tree controls 002C 44 Address 4 BLETREE BLEBK tree root 0030 48 Signed 2 BLECMP (3) Compare instruction used to locate a control block in binary tree 0036 54 Signed 2 BLEDTOFF Child pointer offset 0038 56 Signed 2 BLETKOFF Token offset (for REGBK type) Control block type. 003A 58 Signed 2 BLETYPE Type of control block in table 00000008 BLEHSIZE (*-BLEHD+7)/8 Size, in doublewords, of BLEHD BLEFM frame descriptor formatBLEFM DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure BLEFM CP application interface table ctl block BLEFM Table entry 0000 0 Address 4 BLEEPTR Table start address 0004 4 Address 4 BLEFRE Table free chain 0008 8 Address 4 BLEUNA First unassigned table address 000C 12 Address 4 BLETOP One byte past top of table 00000002 BLEFSIZE (*-BLEFM+7)/8 Size, in doublewords, of BLEFM 0000000C BLEFRMEL 12 Number of bits in a handle used to find the BLEFM
BLEBK Storage Layout
*** BLEBK - CP application interface table ctl block * * +---------------------------+---------------------------+ * 0 | BLETOK | BLEPTR | * +---------------------------+---------------------------+ * 8 * *** BLEBK - CP application interface table ctl block *** BLEHD - CP application interface table ctl block * * +-------------------------------------------------------+ * 0 | | * = BLELKWRD = * | | * +-------------------------------------------------------+ * 18 | BLELKTRC | * +---------------------------+---------------------------+ * 20 | BLETPTR | BLETEND | * +---------------------------+---------------------------+ * 28 | BLEHI | BLETREE | * +---------------------------+-------------+-------------+ * 30 | BLECMP | BLEDTOFF | * +-------------+-------------+-------------+-------------+ * 38 | BLETKOFF | BLETYPE | 3C * +-------------+-------------+ * *** BLEHD - CP application interface table ctl block *** BLEFM - CP application interface table ctl block * * +---------------------------+---------------------------+ * 0 | BLEEPTR | BLEFRE | * +---------------------------+---------------------------+ * 8 | BLEUNA | BLETOP | * +---------------------------+---------------------------+ * 10 * *** BLEFM - CP application interface table ctl block
BLEBK Cross Reference
(contains links to field and bit definitions)Symbol Dspl Value -------------- ---- -----BLECMP 0030
BLEDTOFF 0036
BLEEPTR 0000
BLEFRE 0004
BLEFRMEL 000C 0000000C
BLEFSIZE 000C 00000002
BLEHI 0028
BLEHNDTL 0004 00000008
BLEHSIZE 003A 00000008
BLELKTRC 0018
BLELKWRD 0000
BLEPTR 0004
BLESIZE 0004 00000001
BLETEND 0024
BLETKOFF 0038
BLETOK 0000
BLETOP 000C
BLETPTR 0020
BLETREE 002C
BLETYPE 003A
BLEUNA 0008
Last updated on 3 Aug 1999 at 11:42:12 EDT.
Copyright IBM Corporation, 1990, 1999