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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. |
MRSSIXLK
PrologControl Block Contents
Cross Reference
MRSSIXLK Prolog
DSECT NAME - SSIXLK
FUNCTION - Map a Monitor record.
LOCATED BY -
Through the Monitor Control Area
REFERENCED CONTROL BLOCKS -
MRRECHDR Monitor Record Header
NAME - MRSSIXLK
DESCRIPTIVE NAME - Monitor Sample Record
Domain 11- SSI Domain
Record 6 - XDISK Serialization Sample
DESCRIPTION - Indicates usage information for XDISK cross-system
serialization routines.
NOTES -
1. An SSIXLK record is generated for each XKLBK that exists.
MRSSIXLK Control Block Contents
Offsets
Dec Hex Type Len Name (Dim) Description
0 0 Structure 92 SSIXLK Start of monitor record
0 0 Character 0 SSIXLK_MRHDR Record header. See
MRRECHDR.
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 1 SSIXLK_XLKTYPE Lock Type - see XLKTYPE for
type definitions
21 15 Character 1 * Reserved for future IBM use
22 16 Unsigned 2 SSIXLK_RDEVDEV For locks of type XLKMDCHN,
this value = RDEV number.
Otherwise, this is blank.
24 18 Unsigned 4 SSIXLK_XLKXLGET Count of exclusive acquires
that did not require comm.
28 1C Unsigned 4 SSIXLK_XLKXXGET Count of exclusive acquires
that required cross-SSI comm.
32 20 Unsigned 4 SSIXLK_XLKXDFRS Count of acquires that
deferred before starting SSI
negotiation
36 24 Unsigned 4 SSIXLK_XLKXAMSG Count of messages sent in
order to achieve exclusive
acquires
40 28 Unsigned 4 SSIXLK_XLKXARPL Count of messages received
in response to exclusive
acquires
44 2C Unsigned 4 SSIXLK_XLKCLENS Count of cleanups performed
on this lock
48 30 Character 4 * Reserved for IBM use
52 34 Character 8 SSIXLK_XLKXAWTM TOD time spent deferred
waiting to communicate for
excl. acq.
60 3C Character 8 SSIXLK_XLKXARTM TOD time spent deferred
waiting for responses to
excl. acq.
68 44 Character 8 SSIXLK_XLKXRWTM TOD time spent deferred
waiting to communicate for
excl. rel.
76 4C Character 8 SSIXLK_XLKXRRTM TOD time spent deferred
waiting for responses to
excl. rel.
84 54 Character 8 SSIXLK_XLKXHELD TOD time spent holding the
lock exclusively across the
SSI on behalf of this system
92 5C Character 0 SSIXLK_END
MRSSIXLK 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
SSIXLK 0 92
SSIXLK_END 5C 0
SSIXLK_MRHDR 0 0
SSIXLK_RDEVDEV 16 2
SSIXLK_XLKCLENS 2C 4
SSIXLK_XLKTYPE 14 1
SSIXLK_XLKXAMSG 24 4
SSIXLK_XLKXARPL 28 4
SSIXLK_XLKXARTM 3C 8
SSIXLK_XLKXAWTM 34 8
SSIXLK_XLKXDFRS 20 4
SSIXLK_XLKXHELD 54 8
SSIXLK_XLKXLGET 18 4
SSIXLK_XLKXRRTM 4C 8
SSIXLK_XLKXRWTM 44 8
SSIXLK_XLKXXGET 1C 4
This information is
based on z/VM V6R2.0.
Last updated on 23 Nov 2011 at 15:33:04.
Copyright IBM Corporation, 1990, 2011