Parameters

The parameters are explained as follows:

name

An optional symbol, starting in column 1, that is the name on the IWM4SLI macro invocation. The name must conform to the rules for an ordinary assembler language symbol.

AE_SERVERMAX=ae_servermax

AE_SERVERMAX=0

An optional input parameter, which indicates the architectural limit for the total number of server instances which can run concurrently across the application environment for a given subsystem type and subsystem name.

This parameter represents a physical limit, such as the maximum number of available connections to a back-end subsystem. WLM will not start more than this number of server instances, even if goals cannot be met because of the limit. This value should be an integral multiple of the PARALLEL_EU value defined on the IWM4CON service. If AE_SERVERMAX is not an even multiple of PARALLEL_EU, WLM will round this value down to the next integral multiple.

The maximum limit and the number of service classes to execute work requests should be defined carefully. If the number of service classes exceeds the quotient of AE_SERVERMAX divided by PARALLEL_EU WLM cannot start enough server address spaces to execute the work requests for all service classes. The default is 0, indicating that no maximum limit has been specified

To code: Specify the RS-type address of a halfword field.

,AE_SERVERMIN=ae_servermin

,AE_SERVERMIN=0

An optional input parameter, which indicates the minimum number of servers which should be up and running at all times.

This parameter can be used to tell WLM that a certain amount of server tasks should always be kept available to select work. This value should be an integral multiple of the PARALLEL_EU value defined on IWM4CON service. If AE_SERVERMIN is not an even multiple of PARALLEL_EU, WLM will round this value down to the next integral multiple. The default is 0, which indicates that no limit has been specified.

To code: Specify the RS-type address of a halfword field.

,AE_SPREADMIN=NO

,AE_SPREADMIN=YES

When AE_SERVERMIN=ae_servermin is specified, an optional parameter, which indicates whether WLM will distribute the minimum number of servers as evenly as possible across the service classes being used to process the work requests. The default is AE_SPREADMIN=NO.

,AE_SPREADMIN=NO

The server tasks specified in AE_SERVERMIN will be distributed to service classes as needed in order to meet goals.

,AE_SPREADMIN=YES

The server tasks specified in AE_SERVERMIN will be distributed as evenly as possible to all service classes being used to execute work requests.

,MF=S

,MF=(L,list addr)

,MF=(L,list addr,attr)

,MF=(L,list addr,0D)

,MF=(E,list addr)

,MF=(E,list addr,COMPLETE)

An optional input parameter that specifies the macro form.

Use MF=S to specify the standard form of the macro, which builds an inline parameter list and generates the macro invocation to transfer control to the service. MF=S is the default.

Use MF=L to specify the list form of the macro. Use the list form together with the execute form of the macro for applications that require reentrant code. The list form defines an area of storage that the execute form uses to store the parameters. Only the PLISTVER parameter may be coded with the list form of the macro.

Use MF=E to specify the execute form of the macro. Use the execute form together with the list form of the macro for applications that require reentrant code. The execute form of the macro stores the parameters into the storage area defined by the list form, and generates the macro invocation to transfer control to the service.

,list addr

The name of a storage area to contain the parameters. For MF=S and MF=E, this can be an RS-type address or an address in register (1)-(12).

,attr

An optional 1- to 60-character input string that you use to force boundary alignment of the parameter list. Use a value of 0F to force the parameter list to a word boundary, or 0D to force the parameter list to a doubleword boundary. If you do not code attr, the system provides a value of 0D.

,COMPLETE

Specifies that the system is to check for required parameters and supply defaults for omitted optional parameters.

,PLISTVER=IMPLIED_VERSION

,PLISTVER=MAX

,PLISTVER=0

An optional input parameter that specifies the version of the macro. PLISTVER determines which parameter list the system generates. PLISTVER is an optional input parameter on all forms of the macro, including the list form. When using PLISTVER, specify it on all macro forms used for a request and with the same value on all of the macro forms. The values are:

• IMPLIED_VERSION, which is the lowest version that allows all parameters specified on the request to be processed. If you omit the PLISTVER parameter, IMPLIED_VERSION is the default.
• MAX, if you want the parameter list to be the largest size currently possible. This size might grow from release to release and affect the amount of storage that your program needs.

  If you can tolerate the size change, IBM® recommends that you always specify PLISTVER=MAX on the list form of the macro. Specifying MAX ensures that the list-form parameter list is always long enough to hold all the parameters you might specify on the execute form, when both are assembled with the same level of the system. In this way, MAX ensures that the parameter list does not overwrite nearby storage.

• 0, if you use the currently available parameters.

To code: Specify one of the following:

• IMPLIED_VERSION
• MAX
• A decimal value of 0

,RETCODE=retcode

An optional output parameter into which the return code is to be copied from GPR 15.

To code: Specify the RS-type address of a fullword field, or register (2)-(12).

,RSNCODE=rsncode

An optional output parameter into which the reason code is to be copied from GPR 0.

To code: Specify the RS-type address of a fullword field, or register (2)-(12).

,START_MINIMUM=SERIAL

,START_MINIMUM=PARALLEL

When AE_SERVERMIN=ae_servermin is specified, an optional parameter, which indicates whether WLM will start the minimum number of servers one by one or in parallel. The default is START_MINIMUM=SERIAL.

,START_MINIMUM=SERIAL

The server tasks specified in AE_SERVERMIN will be started one by one. This means the next server will only be started if the previous server has connected to WLM.

,START_MINIMUM=PARALLEL

The server tasks specified in AE_SERVERMIN will be started in parallel. This means WLM will start additional servers even when the previous servers have not connected to WLM.