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

#### MRSCLIOP

Prolog
Control Block Contents
Storage Layout
Cross Reference

#### MRSCLIOP Prolog

####

####

     DSECT NAME - SCLIOP
     FUNCTION - Map a Monitor record.
     LOCATED BY -
               Through the Monitor Control Area
     REFERENCED CONTROL BLOCKS -
            MRRECHDR    Monitor Record Header
     NAME - MRSCLIOP
     DESCRIPTIVE NAME - Monitor Event Record
                        Domain 2 - Scheduler Domain
                        Record 11 - I/O Priority Change
     DESCRIPTION - Records I/O Priority change to a user.  A
                   user's I/O priority may change when a system
                   change occurs.  A system change occurs when
                   the system operator changes the I/O priority
                   status on the system console.  A user change
                   can also occur when a SET IOPRIORITY command
                   is issued specifying this user, or user logs
                   on and has a IOPRIORITY directory statement.
                   This record is generated only if the user
                   who is the target of the command is enabled
                   for scheduler domain (not to be confused
                   with the user that issued the command).

    MRSCLIOP Control Block Contents

    Offsets
    Dec Hex  Type       Len  Name (Dim)          Description

      0   0  Structure   36  SCLIOP              Start of monitor record
      0   0  Character    0  SCLIOP_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  SCLIOP_VMDUSER      Userid
     28  1C  Unsigned     4  SCLIOP_IPQUPR1      HCPIPQUP input R1
     28  1C  Unsigned     1  SCLIOP_NEWRQLO      If not a system change, this is
                                                 the user's requested LO range
                                                 value.
     29  1D  Unsigned     1  SCLIOP_NEWRQHI      If not a system change, this is
                                                 the user's requested HI range
                                                 value.
     30  1E  Character    1  *                   Reserved and available for IBM
                                                 use
     31  1F  Bitstring    1  SCLIOP_IPQX0        Type of change flag byte
              1... ....      SCLIOP_IPQXCP       System change. Received real
                                                 machine check.
              .1.. ....      SCLIOP_IPQXDIS      I/O Priority Queuing changed
                                                 from enabled to disabled state
              ..1. ....      SCLIOP_IPQXENB      I/O Priority Queuing changed
                                                 from disabled to enabled state
              ...1 ....      *
              .... 1...      SCLIOP_IPQXUSER     Not a system change.
              .... .1..      SCLIOP_IPQXREL      User wants RELATIVE range.
              .... ..1.      SCLIOP_IPQXABS      User wants ABSOLUTE range.
              .... ...1      *
     32  20  Unsigned     4  SCLIOP_SYSIOPQ      I/O Priority Queueing
                                                 Information
     32  20  Bitstring    1  SCLIOP_SYSIOPQH     I/O Priority Queueing Hardware
                                                 Flags
              1... ....      SCLIOP_SYSIOPQA     I/O Priority Queueing facility
                                                 active
              .1.. ....      *
              ..1. ....      *
              ...1 ....      *
              .... 1...      *
              .... .1..      *
              .... ..1.      *
              .... ...1      *
     33  21  Unsigned     1  SCLIOP_SYSIOPLO     I/O Priority system minimum
     34  22  Unsigned     1  SCLIOP_SYSIOPHI     I/O Priority system maximum
     35  23  Character    1  *                   Reserved for IBM Use
     36  24  Character    0  SCLIOP_END

    MRSCLIOP 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
    SCLIOP                  0     36
    SCLIOP_END             24      0
    SCLIOP_IPQUPR1         1C      4
    SCLIOP_IPQXABS         1F           02
    SCLIOP_IPQXCP          1F           80
    SCLIOP_IPQXDIS         1F           40
    SCLIOP_IPQXENB         1F           20
    SCLIOP_IPQXREL         1F           04
    SCLIOP_IPQXUSER        1F           08
    SCLIOP_IPQX0           1F      1
    SCLIOP_MRHDR            0      0
    SCLIOP_NEWRQHI         1D      1
    SCLIOP_NEWRQLO         1C      1
    SCLIOP_SYSIOPHI        22      1
    SCLIOP_SYSIOPLO        21      1
    SCLIOP_SYSIOPQ         20      4
    SCLIOP_SYSIOPQA        20           80
    SCLIOP_SYSIOPQH        20      1
    SCLIOP_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