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From: Ludovic Brenta <ludovic@ludovic-brenta.org>
Newsgroups: comp.lang.ada
Subject: Re: User Defined Storage Pool : did you ever experiment with it ?
Date: Mon, 24 Jan 2011 01:25:29 -0800 (PST)
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Yannick Duch=EAne wrote on comp.lang.ada:
> I don't feel to remember I ever see a single Ada source with some use of =
=A0
> [storage pools]. Is this just an not enough known feature, or does it mea=
n there is =A0
> not so much benefit to use it ?

At Eurocontrol, we use two custom storage pools besides the default
one.

We have a "No-Dealloc" storage pool that raises an exception if the
software attempts to deallocate from it. More importantly, this pool
works in two modes: initially it accepts allocation and writing of new
objects in the pool (but, of course, no deallocation), then it
switches to read-only mode by calling mprotect(2) on all memory pages.
Any subsequent attempt to alter data in this pool will crash the
program.  We use this pool to parse a large database of immutable
objects into memory; objects have lots of access values referencing
one another, so we have to be able to alter references while parsing.
We switch to read-only mode when the parsing is complete.

The other custom storage pool we use is to detect memory leaks. We do
that by preprocessing our sources when building in a special leak-
detection mode.

--
Ludovic Brenta.