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Subject: Re: Boehm-Demers-Weiser conservative garbage collector and GNAT
References: <1316747.mXveBPtf0Z@linux1.krischik.com>
From: Ludovic Brenta <ludovic.brenta@insalien.org>
Date: 17 Jun 2003 11:04:14 +0200
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Date: 2003-06-17T11:04:14+02:00
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Martin Krischik <krischik@users.sourceforge.net> writes:

> Hello,
> 
> I am wondering if it is possible to implement a storage pool using  the
> Boehm-Demers-Weiser conservative garbage collector in GNAT.
> 
> But before I waste to much time I would like to know if anybody ever tried
> that before?
> 
> Or does anybody know any reasons why this might be doomed?
> 
> With Regards
> 
> Martin
> 
> For details on Boehm-Demers-Weiser conservative garbage collector see:
> 
> http://www.hpl.hp.com/personal/Hans_Boehm/gc/index.html

The web page you mention says that GCC contains a version of this
garbage collector.  I understand this has been introduced in GCC 3.0.
So, to me, there appears to be three approaches to "implement a
storage pool using the Boehm-Demers-Weiser conservative garbage
collector in GNAT":

- Re-implement the GC in Ada, as an external library, so that all Ada
  programs can use it (even non-GNAT ones if the code is portable).

- Write a thick Ada binding to the C garbage collector, with the same
  end result as above, but requiring an additional library at link
  time.

- Modify libgnat and libgnarl in GCC 3.3 with a new storage pool that
  uses the copy of the GC that is in GCC 3.3; this would make the GC
  available only to GCC 3.3 applications.

Which were you thinking about?

-- 
Ludovic Brenta.