Programming Interface Information: The Monitor Records are intended Programming Interfaces that allow the customer to write programs to obtain services of z/VM.

#### MRUSERDC

Prolog
Control Block Contents
Storage Layout
Cross Reference

#### MRUSERDC Prolog

####

####

     DSECT NAME - USERDC
     FUNCTION - Map a Monitor record.
     LOCATED BY -
            Through the Monitor Control Area
     REFERENCED CONTROL BLOCKS -
            MRRECHDR    Monitor Record Header
     NAME - MRUSERDC
     DESCRIPTIVE NAME - Monitor Event Record
                        Domain 4 - User Domain
                        Record 7 - DEFINE CPU n AS
     DESCRIPTION - Records a virtual CPU that has been defined
                   by the DEFINE CPU n AS command.

    MRUSERDC Control Block Contents

    Offsets
    Dec Hex  Type       Len  Name (Dim)          Description

      0   0  Structure   32  USERDC              Start of monitor record
      0   0  Character    0  USERDC_MRHDR        record header
      0   0  Character   20  MRHDR
      0   0  Unsigned     2  MRHDRLEN            record length in bytes
      2   2  Unsigned     2  MRHDRZER            field of zeros
      4   4  Unsigned     1  MRHDRDM             domain identifier
      5   5  Unsigned     1  *
      6   6  Unsigned     2  MRHDRRC             record identifier
      8   8  Character    8  MRHDRTOD            Time at which this record was
                                                 built. In time-of-day (TOD) clock
                                                 format. See IBM System 370 XA
                                                 Principle of Operation for
                                                 explanation of format.
     16  10  Character    4  *
     20  14  Character    0  MRHDR_END           End of header
     20  14  Character    8  USERDC_VMDUSER      User identification
     28  1C  Unsigned     2  USERDC_VMDCPUAD     Old Processor address
     30  1E  Unsigned     2  USERDC_NEWCPUAD     New Processor address
     32  20  Character    0  USERDC_END

    MRUSERDC Cross Reference

                          Hex           Hex
    Name                 Offset Length Value

    MRHDR                   0     20
    MRHDR_END              14      0
    MRHDRDM                 4      1
    MRHDRLEN                0      2
    MRHDRRC                 6      2
    MRHDRTOD                8      8
    MRHDRZER                2      2
    USERDC                  0     32
    USERDC_END             20      0
    USERDC_MRHDR            0      0
    USERDC_NEWCPUAD        1E      2
    USERDC_VMDCPUAD        1C      2
    USERDC_VMDUSER         14      8

    This information is
    based on z/VM V4R3.0.

    Last updated on 1 May 2002 at 16:20:33.

    Copyright IBM Corporation, 1990, 2002