PLOQ entry for PLO queue manager event (IUTPLOQM macro)

This trace record is written when the IUTPLOQM macro is run. It is primarily used to identify the addition or removal of elements to or from a queue header.

Byte (hex)

Contents

00–03

Record ID: C"PLOQ"

04

ID is the primary address space ID (ASID). This field is 0 if the ASID is greater than X'FF'.

05

0

06

IUTPLOQM return code

Add_Chain return codes:

Code Value

Meaning

X'00'

Add_Chain successful and Synch_Byte mask operation was performed (if specified).

X'04'

Add_Chain successful but Synch_Byte mask operation was not performed (LE|GE failed).

Remove_Element return codes:

Code Value

Meaning

X'00'

Remove_Element successful and Synch_Byte mask operation was performed (if specified.)

X'04'

Remove_Element successful but Synch_Byte mask operation was not performed (LE|GE failed).

X'08'

Remove_Element unsuccessful but Synch_Byte mask operation was performed (if specified).

X'0C'

Remove_Element unsuccessful and Synch_Byte mask operation was not performed (LE|GE failed).

Synch_Byte return codes:

Code Value

Meaning

X'00'

Synch_Byte mask operation was performed.

X'04'

Synch_Byte mask operation was not performed (LE|GE failed).

07

Function:

• C"A" for Add_Chain
• C"R" for Remove_Element
• C"S" for Synch_byte_only

08–0B

Element address:

• For Add_Chain, address of first element in chain
• For Remove_Element, address of element removed
• For Synch_byte_only, 0

0C

Contents of synch byte before PLO

0D

Contents of synch byte after PLO

0E–0F

Contents of count field after PLO

10–13

Address of caller (within IUTPLOQM expansion)

14–17

Address of first element on queue after the PLO

18–1B

Address of last element on queue after the PLO

1C–1F

PLO Queue manager Header address (IUTPLOQH)