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

#### MRRECHDR

Prolog
Control Block Contents
Storage Layout
Cross Reference

#### MRRECHDR Prolog

####

####

     DSECT NAME - MRHDR
     FUNCTION - Define the common record header format or be used
                in all the Monitor Records.
     LOCATED BY -
           Used within each Monitor Record   (MRxxxzzz)
     REFERENCED CONTROL BLOCKS -
            None
     NAME - MRRECHDR
     DESCRIPTIVE NAME - Monitor Record Header
     DESCRIPTION -  Common data that prefaces all data in all
                    monitor records.

    MRRECHDR Control Block Contents

    Offsets
    Dec Hex  Type       Len  Name (Dim)          Description

      0   0  Structure   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  *                   reserved for IBM use
      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  *                   reserved for IBM use
     20  14  Character    0  MRHDR_END           End of header

    MRRECHDR 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

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

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

    Copyright IBM Corporation, 1990, 2002