Parameters
The parameters are explained as follows:
- name
- An optional symbol, starting in column 1, that is the name on
the IWM4SSL macro invocation. The name must conform to the rules for
an ordinary assembler language symbol.
- ,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, which supports all parameters except
those specifically referenced in higher versions.
To code: Specify one of the following:
- IMPLIED_VERSION
- MAX
- A decimal value of 0
- ,REGION_TOKEN=region_token
- An optional output parameter, which contains a region
token. A queueing manager can use the region token to queue work requests
to a specific server region. These work requests are considered to
belong to a set of work requests all needing access to same status
information which exists only in the vitual storage of the server
region. They are selected using the IWM4SSL macro. It is assumed that
the application uses the service IWM4TAF to tell WLM when the temporary
affinity to the defined server region begins and ends.
To code: Specify the RS-type address of a
fullword field, or register (2)-(12).
- ,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
- ,SERVER_TOKEN=server_token
- An optional output parameter, which contains a server
token. A queueing manager can use the server token to queue secondary
work requests to this server task. Secondary work requests are considered
to be extensions of the work request selected by IWM4SSL. They are
selected using the IWM4SSM macro. See the IWM4SSM macro for more information.
To code: Specify the RS-type address, or address
in register (2)-(12), of a 32-character field.
- USERDATA=userdata
- A required output parameter, which contains the user
data previously passed to WLM via IWM4QIN.
To
code: Specify the RS-type address, or address in register
(2)-(12), of a 16-character field.
- ,WLMEUTKN=wlmeutkn
- A required output parameter, which will receive the
execution unit token. This token must be passed on subsequent IWM4STBG
and IWM4STEN requests.
To code: Specify
the RS-type address, or address in register (2)-(12), of an 8-character
field.
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