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

#### TRGBK

Prolog

Control Block Contents
TRGBK DSECT

Storage Layout

Cross Reference (Contains links to field and bit definitions)

#### TRGBK Prolog

     NAME       : HCPTRGBK
     DESCRIPTION: ISFC CP Application target control block
     DSECT      : TRGBK
     FUNCTION   : Each TRGBK holds information about one path to a partner.
     LOCATED BY : ACTBK, CARBK
     CREATED BY : CP application mailbox on an OPEN function.
     DELETED BY : CP application mailbox on a CLOSE function.
     SERIALIZED : The ACTBK lock.
     NOTES      :
                  A TRGBK contains information about one path to a partner
                  application. It is used by the CP application mailbox to
                  find a path to a partner application on another node.
                  The ACTBK has the anchor to the TRGBK chain.

#### TRGBK Control Block Content

#### TRGBK DSECT

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      TRGBK          ISFC CP Application target
                                            control block
    0000    0 Character    8 TRGNODET       Target node id
    0008    8 Character    8 TRGAPPLT       Target application
    0010   16 Bitstring    8 TRGPNDOQ       Pending open queue
    0018   24 Signed       4 TRGNEXT        Next TRGBK in chain
    001C   28 Signed       4 TRGPTHBK       Pointer to PTHBK
    0020   32 Signed       4 TRGLOSER       PTHBK for OPEN 'loser'
    0024   36 Bitstring    1 TRGFLAGS       Flag byte:
              1... ....      TRGBUSY        X'80' - Path is busy
              .1.. ....      TRGPNDOP       X'40' - OPEN is pending on path
    0025   37 Bitstring    1 * (3)          Reserved
    0028   40 Dbl-Word     8 *              Reserved
              00000006       TRGSIZE        (*-TRGBK+7)/8 Size, in
                                            doublewords, of TRGBK

#### TRGBK Storage Layout

    *** TRGBK - ISFC CP Application target control block
    *
    *     +-------------------------------------------------------+
    *   0 |                       TRGNODET                        |
    *     +-------------------------------------------------------+
    *   8 |                       TRGAPPLT                        |
    *     +-------------------------------------------------------+
    *  10 |                       TRGPNDOQ                        |
    *     +---------------------------+---------------------------+
    *  18 |         TRGNEXT           |         TRGPTHBK          |
    *     +---------------------------+------+--------------------+
    *  20 |         TRGLOSER          |:FLAGS|////////////////////|
    *     +---------------------------+------+--------------------+
    *  28 |///////////////////////////////////////////////////////|
    *     +-------------------------------------------------------+
    *  30
    *
    *** TRGBK - ISFC CP Application target control block

#### TRGBK Cross Reference

    Symbol         Dspl Value
    -------------- ---- -----
    TRGAPPLT       0008
    TRGBUSY        0024 80
    TRGFLAGS       0024
    TRGLOSER       0020
    TRGNEXT        0018
    TRGNODET       0000
    TRGPNDOP       0024 40
    TRGPNDOQ       0010
    TRGPTHBK       001C
    TRGSIZE        0028 00000006

This information is based on z/VM V5R2.0. Last updated on 12 Apr 2006 at 17:34:42 EDT.
Copyright IBM Corporation, 1990, 2005