1.9.95 script calling Calc built-in functions

Thanks to the explanation by Andrew Douglas Pitonyak and Mathias Bauer.

Scope: global vs. local vs. any other
Are all objects returned by CreateUnoService() global objects and =
therefore not to be disposed of by users?  If the answer is dependent on =
the exact service requested, is there a documentation specifying which =
are global and which are other types?  I tried the Developers Guide, =
version 2.0, and a few OO mail lists.  Not much luck so far.

FunctionAccess:
Is the FunctionAccess service object returned by CreateUnoService() a =
pointer to a singleton object, that is, the actual singleton =
FunctionAccess service object?

Memory management (leakage):
Is the memory automatically reclaimed (at an unspecified time) when the =
service objects go out of scope?
Is the memory management guideline independent of the script languages =
(Basic, Java-BeanShell, etc.)

There is no concern for memory leakage if all service objects returned =
by CreateUnoService() are mere pointers (handles) to the real (global) =
service objects.

Efficiency:
The overhead of CreateUnoService() becomes noticeable when the =
repetition approaches 100000 - 1000000 (1 million) in Basic on MS =
Windows 2000.

Regards,


' --- example code in OO Basic 1.9.95
option explicit

' simulate repetitive calls from sheet cells to CreateUnoService()
' assume 10 - 20 calls to built-in sheet functions to satisfy one cell =
request
' assume the same number of calls to CreateUnoService() due to the =
partition of algorithm logic=20
Sub test_01()
dim ii as long, cnt as long, err as long
cnt =3D 1000000
for ii =3D 0 to cnt step 1
  err =3D call_sheet_functions()
  next
msgbox( "call_sheet_functions() repeats " & cnt )
End Sub


function call_sheet_functions() as long
Dim oFunction as variant
oFunction =3D CreateUnoService("com.sun.star.sheet.FunctionAccess")

' data processing section, call sheet built-in functions

call_sheet_functions =3D 0
end function