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Programming Interface Information:
The Monitor Records are intended Programming Interfaces that allow the customer to write programs to obtain services of z/VM. |
MRSCLIOP
PrologControl 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 V5R1.0.
Last updated on 13 Sep 2004 at 11:25:22.
Copyright IBM Corporation, 1990, 2004