comm_status

[comm_status [ , ACF-function-attributes ] ] function-name(
    [ [ ACF-parameter-attributes ] ] parameter-name
    , ...
);

[ [ ACF-function-attributes ] ] function-name(
    [comm_status [ , ACF-parameter-attributes ] ] parameter-name
    ... );

ACF-function-attributes

Specifies zero or more ACF function attributes, such as comm_status and nocode. Function attributes are enclosed in square brackets. Note that zero, one, or more attributes can be applied to a function. Separate multiple function attributes with commas. Note that if comm_status appears as a function attribute, it cannot also appear as a parameter attribute.

function-name

Specifies the name of the function as defined in the IDL file.

ACF-parameter-attributes

Specifies attributes that apply to a parameter. Note that zero, one, or more attributes can be applied to the parameter. Separate multiple parameter attributes with commas. Parameter attributes are enclosed in square brackets. IDL parameter attributes, such as directional attributes, are not allowed in the ACF. Note that if comm_status appears as a parameter attribute, it cannot also appear as a function attribute.

parameter-name

Specifies the parameter for the function as defined in the IDL file. Each parameter for the function must be specified in the same sequence, using the same name as defined in the IDL file.

Remarks

The comm_status attribute can be used as either a function attribute or as a parameter attribute, but it can appear only once per function. It can be applied either to the function or to one parameter in each function.

The comm_status attribute can only be applied to functions that return the type error_status_t. When a communication error occurs during the execution of the function, an error code is returned.

When comm_status is used as a parameter attribute, the parameter must be defined in the IDL file and must be an out parameter of type error_status_t. When a communication error occurs during the execution of the function, the parameter is set to the error code. When the remote call is completed successfully, the procedure sets the value.

It is possible for both the comm_status and fault_status attributes to appear in a single function, either as function attributes or parameter attributes. If both attributes are function attributes or if they apply to the same parameter and no error occurs, the function or parameter has the value error_status_ok. Otherwise, it contains the appropriate comm_status or fault_status value. Because values returned for comm_status are different from the values returned for fault_status, the returned values are readily interpreted.

See Also