COUBK | Back to Index page

| Prolog Control Block Contents COUBK DSECT Storage Layout Cross Reference (Contains links to field and bit definitions) |
Programming Interface Information: This information is NOT intended to be used as Programming Interfaces of z/VM.

COUBK Prolog | Top of page

     NAME       : HCPCOUBK
     DESCRIPTION: CPU-Counter-Set Controls
     DSECT      : COUBK
     FUNCTION   : Mapping of the CPU-Counter-Set Controls which is used
                  to Activate and Deactivate CPU-Measurement Facility
                  counter sets.
     LOCATED BY : This control block is not allocated, but overlays existing
                  storage (such as SAVEWRK).
     CREATED BY : This control block is not allocated, so it does not get
                  created.
     DELETED BY : This control block is not allocated, so it does not get
                  deleted.
     REFERENCES : none
     SERIALIZED : N/A
     RELOCATION CONSIDERATIONS : None
     COMPATIBILITY AND MIGRATION CONCERNS : The format of this control block is defined in "The
                  Set-Program-Parameter and CPU-Measurement Facilities"
                  book and should not be modified.

COUBK Control Block Content | Top of page

     COUBK DSECT
    Top of page

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      COUBK          CPU-Counter-Set Controls
    0000    0 Signed       4 *              Reserved for IBM use
    0004    4 Bitstring    2 COUENAC        Enable Controls (see QCIAC in
                                            HCPQCIBK COPY for definition of
                                            bits)
    0006    6 Bitstring    2 COUACTC        Activation Controls (see QCIAC in
                                            HCPQCIBK COPY for definition of
                                            bits)
              00000001       COUSIZE        (*-COUBK+7)/8 size in double
                                            words
              00000008       COUBSIZE       COUSIZE*8 size in bytes

COUBK Storage Layout | Top of page

    *** COUBK - CPU-Counter-Set Controls
    *
    *     +---------------------------+-------------+-------------+
    *   0 |///////////////////////////|  COUENAC    |  COUACTC    |
    *     +---------------------------+-------------+-------------+
    *   8
    *
    *** COUBK - CPU-Counter-Set Controls

COUBK Cross Reference | Top of page

    Symbol         Dspl Value
    -------------- ---- -----
    COUACTC        0006
    COUBSIZE       0006 00000008
    COUENAC        0004
    COUSIZE        0006 00000001

This information is based on z/VM 7.2.0 Last updated on 24 Jun 2020 at 09:27:25 EDT.
Copyright IBM Corporation, 1990, 2020