Delete_UR_Interest (ATRDINT, ATR4DINT)

ATRDINT is for AMODE(31) callers.
ATR4DINT is for AMODE(64) callers and allows parameters in 64 bit addressable storage.

A resource manager calls the Delete_UR_Interest service to delete an interest in a unit of recovery (UR). Note that RRS normally deletes the interest when the UR is complete.

In response to the Delete_UR_Interest call, RRS issues a return code.

The call deletes only one interest in the UR; if there are other interests, they continue to exist. For example, multiple resource managers might have expressed interest in the UR, or your resource manager might have issued the Express_UR_Interest call multiple times for this UR.

If the expression of interest to be deleted is the last expression of interest in a UR that is in local transaction mode, and the transaction was implicitly started (no Begin_Transaction was issued to demarcate the beginning of the local transaction), then the unit of recovery is completed and returned to in-reset state. When the transaction is completed, any post sync PETs that were set for this UR are released.

Environment

The requirements for the caller are:

Minimum authorization:

PKM allowing key 0-7, or supervisor state

Dispatchable unit mode:

Task or SRB

Cross memory mode:

Any PASN, any HASN, any SASN

AMODE:

31 bit (ATRDINT)
64 bit (ATR4DINT)

ASC mode:

Primary or AR

Interrupt status:

Enabled for I/O and external interrupts

Locks:

No locks held

Control parameters:

Control parameters must be in the primary address space and addressable by the caller.

Linkage:

Standard MVS™ linkage conventions

Programming requirements

Either link edit your object code with the linkable stub routine ATRRCSS (31 bit) or ATRR4CSS (64 bit) from SYS1.CSSLIB, or LOAD and CALL the callable service. The high level language (HLL) definitions for the callable service are:

HLL definition	Description
ATRRASM	390 Assembler declarations
ATRRC	C/390 declarations

Restrictions

The UR state must be in-flight. After the call, any subsequent reference to the UR interest token causes a logic error.

The resource manager associated with the UR interest token specified in the call must be in run state, which means it has registered, set its exit routines with RRS, and completed restart.

Input register information

Before issuing the call, the caller does not have to place any information into any register unless using it in register notation for the parameters, or using it as a base register.

Output register information

When control returns to the caller, the GPRs contain:

Register: Contents
0-1: Used as work registers by the system
2-13: Unchanged
14: Used as a work register by the system
15: Return code

When control returns to the caller, the ARs contain:

Register: Contents
0-1: Used as work registers by the system
2-13: Unchanged
14-15: Used as work registers by the system

Some callers depend on register contents remaining the same before and after issuing a call. If the system changes the contents of registers on which the caller depends, the caller must save them before calling the service, and restore them after the system returns control.

Performance implications

None.

Syntax

Write the call as shown in the syntax diagram. You must code the parameters in the CALL statement as shown.

CALL ATRDINT

(return_code
,ur_interest_token)

CALL ATR4DINT

(return_code
,ur_interest_token)

Parameters

The parameters are explained as follows:

return_code

Returned parameter

Type: Integer
Character Set: N/A
Length: 4 bytes

Contains the return code from the Delete_UR_Interest service.

,ur_interest_token

Supplied parameter

Type: Character string
Character Set: No restriction
Length: 16 bytes

Specifies the UR interest token that uniquely represents an instance of the resource manager's interest in the particular UR. Your resource manager received the token from the Express_UR_Interest service or the Retain_Interest service.

ABEND codes

The call might result in an abend X'5C4' with a reason code of either X'00010000' or X'00010001'. See z/OS MVS System Codes for the explanations and actions.

Return codes

When the service returns control to the resource manager, GPR 15 and return_code contain a hexadecimal return code.

Return Code in: Hexadecimal Equate Symbol	Meaning and action
0 ATR_OK	Meaning: Successful completion. Action: None.
103 ATR_INTERRUPT_STATUS_INV	Meaning: Program error. The resource manager is disabled; the interrupt status must be enabled for I/O and external interrupts. The system rejects the service call. Action: Check the resource manager for a probable coding error. Correct the resource manager and rerun it.
105 ATR_LOCKS_HELD	Meaning: Program error. The resource manager is holding one or more locks; no locks must be held. The system rejects the service call. Action: Check the resource manager for a probable coding error. Correct the resource manager and rerun it.
107 ATR_UNSUPPORTED_RELEASE	Meaning: Environmental error. The system release does not support this service. The system rejects the service call. Action: Remove the resource manager from the system, and install it on a system that supports RRS. Then rerun the resource manager.
370 ATR_URI_TOKEN_INV	Meaning: Program error. The UR interest token specified in the call is not for one of the currently valid interests. The system rejects the service call. Action: Check the resource manager for a probable coding error. Correct the resource manager and rerun it.
701 ATR_RM_STATE_ERROR	Meaning: Program error. The resource manager associated with the UR interest token specified in the call is not in a valid state to issue the service call. The resource manager must be in run state. The system rejects the service call. Action: Check the resource manager for a probable coding error. Correct the resource manager and rerun it.
702 ATR_RM_EXITS_UNSET	Meaning: Program error. RRS has unset the RRS exit routines for the resource manager. The system rejects the service call. Action: The resource manager must reset its RRS exits and begin restart processing with RRS.
731 ATR_UR_STATE_ERROR	Meaning: Program error. The UR is not in a valid state for the service call. The UR state must be in-flight. The system rejects the service call. Action: Check the resource manager for a probable coding error. Correct the resource manager and rerun it.
F00 ATR_NOT_AVAILABLE	Meaning: RRS is not available. Action: The system rejects the service request. Retry the request later. Before retrying the request, the resource manager must reset its RRS exit routine information and begin restart processing with RRS.
F06 ATR_WAS_NOT_AVAILABLE	Meaning: RRS was available to the resource manager, but went down and came back up again. A commit or backout operation may or may not have been in progress for the context under which the Delete_UR_Interest was done at the time of the RRS failure. A new unit of recovery can not be created until the current unit of recovery is completed. Action: The system rejects the service request. Restart your resource manager, making sure to reset the resource manager's exit routines with RRS. The resource manager must inform the application that one of the following actions must be taken to complete the current unit of recovery: If a commit or backout request was not active at the time of the RRS failure, a commit or backout must be requested before a new unit of recovery can begin. If a commit or backout request was active at the time of the RRS failure, the context must be ended, via the CTXENDC service, before a new unit of recovery can begin.
FFF ATR_UNEXPECTED_ERROR	Meaning: System error. The service that was called encountered an unexpected error. The system rejects the service call. Action: Search problem reporting databases for a fix for the problem. If no fix exists, contact the IBM® Support Center.

Example

In the pseudocode example, the resource manager issues a call to delete its interest in a UR.

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URI_TOKEN = MY_URI_TOKEN
CALL ATRDINT(RC,URI_TOKEN)
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