LRFBK - 64-bit CP - V4R4.0

Programming Interface Information: This information is NOT intended to be used as Programming Interfaces of z/VM.

#### LRFBK

Prolog

Control Block Contents
LRFBK DSECT

Storage Layout

Cross Reference (Contains links to field and bit definitions)

#### LRFBK Prolog

     NAME       : HCPLRFBK
     DESCRIPTION: LOCKED RELEASED FRAME BLOCK
     DSECT      : LRFBK
     FUNCTION   : POINTS TO A FRAME THAT THE RELEASE FUNCTION
                  FOUND TO BE LOCKED.
     LOCATED BY : RSALRFQ   ANCHOR OF A QUEUE OF LRFBKS, IF ANY EXIST
                  LRFNEXT   POINTER THAT CHAINS LRFBKS TOGETHER
     CREATED BY : HCPRLU    CREATED WHEN A LOCKED AND RELEASED FRAME
                  IS NOT UNLOCKED WITHIN A REASONABLE TIME.
     DELETED BY : HCPRPB    DELETED WHEN THE FRAME IS FOUND UNLOCKED.
     SERIALIZED : RSALRFLK - SPIN LOCK

#### LRFBK Control Block Content

#### LRFBK DSECT

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      LRFBK          LOCKED RELEASED FRAME BLOCK
    0000    0 Signed       4 LRFFRAME       ADDRESS OF THE FRAME
    0004    4 Signed       4 LRFFRMTE       ADDRESS OF THE FRAME'S FRMTE
    0008    8 Signed       4 LRFNEXT        POINTER TO THE NEXT LRFBK. THIS
                                            FIELD IS 0 IF THERE ARE NO MORE
                                            LRFBKS.
    000C   12 Signed       4 *              RESERVED FOR IBM USE
              00000002       LRFSIZE        (*-LRFBK+7)/8 LRFBK SIZE IN
                                            DOUBLEWORDS

#### LRFBK Storage Layout

    *** LRFBK - LOCKED RELEASED FRAME BLOCK
    *
    *     +---------------------------+---------------------------+
    *   0 |         LRFFRAME          |         LRFFRMTE          |
    *     +---------------------------+---------------------------+
    *   8 |         LRFNEXT           |///////////////////////////|
    *     +---------------------------+---------------------------+
    *  10
    *
    *** LRFBK - LOCKED RELEASED FRAME BLOCK

#### LRFBK Cross Reference

    Symbol         Dspl Value
    -------------- ---- -----
    LRFFRAME       0000
    LRFFRMTE       0004
    LRFNEXT        0008
    LRFSIZE        000C 00000002

This information is based on z/VM V4R4.0. Last updated on 30 Jul 2003 at 12:56:23 EDT.
Copyright IBM Corporation, 1990, 2003