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From: Stephen Leake <Stephen.Leake@gsfc.nasa.gov>
Subject: Re: Software landmines (loops)
Date: 1998/09/01
Message-ID: <uyas3eb81.fsf@gsfc.nasa.gov>#1/1
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References: <slrn6sopmg.4fg.jdege@jdege.visi.com>
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Organization: NASA Goddard Space Flight Center -- Greenbelt, Maryland USA
Newsgroups: comp.lang.eiffel,comp.object,comp.software-eng,comp.lang.ada
Date: 1998-09-01T00:00:00+00:00
List-Id: <comp.lang.ada>

Matthew Heaney <matthew_heaney@acm.org> writes:

> "Robert Martin" <rmartin@oma.com> writes:
> 
> > >   Finalization did end up in Ada 95, and it is the right solution to
> > >this particular problem.
> > 
> > I am not sure of the semantics of 'finalization' in ADA9X, but if it works
> > like Java's, then it does not solve the problem created by multiple exits
> > from loops.
> 
> "Finalization" in Ada95 is equivalent to having a constructor and
> deconstructor for an object.
> 
> If a file (or mutex) is controlled - which just means it has a
> deconstructor - then the file (mutex) will be automatically closed
> (released) when the subprogram terminates. 

In addition, Ada Finalization happens immediately when the object goes
out of scope; Java finalization happens when the garbage collector
gets around to freeing the object's memory. This means Java
finalization is NOT a solution to the resource issue (seize/release,
open/close, etc), but Ada Finalization is.

-- Stephe