Call IEA4RLS service to remove a task that has been paused, or to keep a task from being paused. Although a pause element can be used multiple times to pause a task, a pause element token can be used to successfully pause and release a task only once. Each time a pause element is used, the system generates a new PET to identify the pause element. The system returns the new updated PET on calls to the pause and transfer services.
The requirements for the caller are:
| Environmental factor | Requirement |
|---|---|
| Minimum authorization: | Problem state and any PSW key. |
| Dispatchable unit mode: |
|
| Cross memory mode: |
|
| AMODE: | 64-bit |
| ASC mode: | Primary mode. |
| Interrupt status: | Enabled or disabled for I/O and external interrupts. |
| Locks: | May hold the CPU, local or CMS lock. |
| Control parameters: | Must be in the primary address space and addressable by the caller. |
Either link the calling program's object code with the linkable stub routine (IEA4CSS from SYS1.CSSLIB), or load the calling program and then call the service. The high-level language (HLL) definitions for the callable service are:
| HLL Definition | Description |
|---|---|
| IEAASM | 390 Assembler declarations |
| IEAC | C/390 and C++/390 declarations |
When the calling program specifies auth_level=IEA_UNAUTHORIZED, the caller must be in task mode and can only release another task in its home address space. All pause element tokens (PETs) used when auth_level=IEA_UNAUTHORIZED must have been obtained using an authorization level of IEA_UNAUTHORIZED.
Some callers depend on register contents remaining the same before and after issuing a service. If the system changes the contents of registers on which the caller depends, the caller must save them before issuing the service, and restore them after the system returns control.
None.
| Syntax | Description |
|---|---|
| SYSSTATE AMODE64=YES | |
| CALL IEA4RLS | |
The parameters are explained as follows:
Contains the return from the Release service.
Indicates the maximum authorization level that the specified pause element was allocated with. The calling program can use constants IEA_UNAUTHORIZED and IEA_AUTHORIZED, defined by IEAASM and IEAC. The following levels are supported:
| Variable | Value (HEX) | Meaning |
|---|---|---|
| IEA_UNAUTHORIZED | 0 | The pause element being released must have been allocated with auth_level=IEA_UNAUTHORIZED. |
| IEA_AUTHORIZED | 1 | The pause element being released must have been allocated with auth_level=IEA_AUTHORIZED. |
Contains the pause element token that identifies the pause element used to pause the task. If the PET identifies a pause element that has not been paused, the task is paused. However, the value specified in target_du_release_code is returned to the caller of pause.
Contains the release code returned to the caller of pause or transfer service that used or will use the same PET to pause a task. If your program is not using this code for communication, set this field to zero.
None.
When the service returns control to the resource manager, GPR 15 and the return_code parameter contain a hexadecimal return code.
Return code in: |
Meaning and Action |
|---|---|
| 00 (00) IEA_SUCCESS |
Meaning: Successful completion. Action: None. |
| 04 (04) IEA_PE_TOKEN_BAD |
Meaning: The specified pause element token
is not valid. The system rejects the service call. Action: Check the calling program for a probable coding error. Correct the program and rerun it. |
| 08 (08) IEA_PE_TOKEN_STALE |
Meaning: The specified pause element token
is stale; that is, it was valid but has been used on the Pause or
Transfer service. This service requires the updated PET be returned
on Pause or Transfer. Action: Check the calling program for a probable coding error. Correct the program and rerun it. |
| 16 (10) IEA_SLEEP_DISRUPTED |
Meaning: RTM has ended the task; no release
is necessary. Action: None. |
| 20 (14) IEA_SPACE_TERMINATING |
Meaning: The address space that contains
the task is terminating; no release is necessary. Action: None. |
| 24 (18) IEA_LOCK_HELD |
Meaning: Program error. The caller is
holding one or more locks; no locks must be held. The system rejects
the service call. Action: Check the calling program for a probable coding error. Correct the program and rerun it. |
| 32 (20) IEA_PE_BAD_STATE |
Meaning: Program error. The pause element
associated with the pause element token specified is not valid or
has already been prereleased. Action: Check the calling program for a probable coding error. Correct the program and rerun it. |
| 36 (24) IEA_UNSUPPORTED_MVS_RELEASE |
Meaning: Environmental error. The system
release does not support this service. The system rejects the service
call. Action: Run the program on a system that supports the service. |
| 40 (28) IEA_INVALID_AUTHCODE |
Meaning: Program error. The auth_level
value specified in the call is not valid. The system rejects the
service call. Action: Check the calling program for a probable coding error. Correct the program and rerun it. |
| 44 (2C) IEA_INVALID_MODE |
Meaning: Program error. The calling program
is not in primary ASC mode, which this service requires. The system
rejects the service call. Action: Check the calling program for a probable coding error. Correct the program and rerun it. |
| 60 (3C) IEA_AUTH_TOKEN |
Meaning: Program error. The caller specified
auth_level=UNAUTHORIZED, but the pause element token was allocated
with auth_level=AUTHORIZED. The system rejects the service call. Action: Program error. The specified pause element token is not valid. The system rejects the service call. |
| 64 (40) IEA_PE_NOT_HOME |
Meaning: Program error. The caller specified
auth_level=UNAUTHORIZED, but the pause element token was for a pause
element allocated to another address. Action: Check the calling program for a probable coding error. Correct the program and rerun it. |
| 4095 (FFF) IEA_UNEXPECTED_ERROR |
Meaning: This service routine encountered
an unexpected error. The system rejects this service request. Action: Contact IBM® support. |