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
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 V4R4.0.
Last updated on 22 Jul 2003 at 15:04:23.
Copyright IBM Corporation, 1990, 2003