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From: "Martin Krischik" <krischik@users.sourceforge.net>
Newsgroups: comp.lang.ada
Subject: Re: How-to on using the adacl-gc packages
Date: 15 May 2006 05:16:09 -0700
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Erik J Pessers wrote:
> Dear all,
>
> I tried to play around with the  Martin Krischik garbage
> collection routines in the AdaCL packages, but the doc
> supplied with the package is very terse indeed (at least
> for some-one with my limited background in garbage
> collection and pool management matters).
>
> Any-one around that would be willing to share some
> actual snippets of code using the AdaCL.GC.Managed
> and AdaCL.GC.Managed_Controlled  packages, that could
> be a clue for me on how things fit in?

Well there are examples in AdaCL itself: just look for 'Storage_Pool.
There indeed not much which you need to do apart from choosing the
right storrage pool.

Inside the Subversion archive, in branch Ada_2005 you also find some
new stress tests for the collector. Start at

http://svn.sourceforge.net/viewcvs.cgi/adacl/branches/Ada_2005/adacl/Source/testgc.ads?view=markup

> Also: any general feelings on whether including
> garbage collection is something to really worry
> about in practice?

Honest answer:

since I found out about the power 'Class and generic type T (<>) is
private I don't think it is worth that much.

Also: the stress tests reveiled a weeknees inside the collector
library: Sometimes GNAT internaly caches pointers to objects. The
collector correctly find the reference and won't release the object.

Read: http://en.wikipedia.org/wiki/Weak_reference

Especialy controled objects are hit.

Martin