From: Maciej Sobczak <see.my.homepage@gmail.com>
Subject: Re: Ada containers and custom allocators
Date: Mon, 7 Jan 2008 23:59:34 -0800 (PST)
Date: 2008-01-07T23:59:34-08:00 [thread overview]
Message-ID: <fb7764c5-31f9-488d-a0e6-53ffd6c96182@k39g2000hsf.googlegroups.com> (raw)
In-Reply-To: flul5p$rv0$1@jacob-sparre.dk
On 8 Sty, 02:54, "Randy Brukardt" <ra...@rrsoftware.com> wrote:
> > Is it possible to set up a custom allocator for use with any given Ada
> > container?
>
> If you mean an allocator for the private data of the container (which
> includes all of the elements and is the bulk of the container), the answer
> is no.
This is exactly what I mean. It is not uncommon for a program to have
a majority of its dynamic memory managed by containers.
> The standard Ada containers do not provide any mechanism to control
> how/were the container allocates memory.
This limitation prevents programmers from doing many interesting
optimizations. Even if we put performance issues aside, I might want
to control the memory allocation for reliability.
[...]
> (or, the
> storage pool passed would have to be completely general, allowing any size
> allocation, which would eliminate the vast majority of interesting things
> that you can do with storage pools).
There are ways to overcome this problem, at least for some container
types. Node-based containers could use fixed-size allocators, but of
course it is the container which would then instantiate the allocator
with the proper node size. It was possible in C++.
--
Maciej Sobczak * www.msobczak.com * www.inspirel.com
next prev parent reply other threads:[~2008-01-08 7:59 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-07 15:48 Ada containers and custom allocators Maciej Sobczak
2008-01-07 16:29 ` Dmitry A. Kazakov
2008-01-08 1:54 ` Randy Brukardt
2008-01-08 7:59 ` Maciej Sobczak [this message]
2008-01-08 23:54 ` Randy Brukardt
2008-01-09 8:56 ` Dmitry A. Kazakov
2008-01-09 15:29 ` Robert A Duff
2008-01-09 17:09 ` Dmitry A. Kazakov
2008-01-09 21:58 ` Robert A Duff
2008-01-10 10:12 ` Dmitry A. Kazakov
2008-01-11 5:00 ` Randy Brukardt
2008-01-09 15:28 ` Robert A Duff
2008-01-11 5:00 ` Randy Brukardt
2008-01-11 21:02 ` Maciej Sobczak
2008-01-11 22:41 ` Robert A Duff
2008-01-12 13:40 ` Maciej Sobczak
2008-01-12 15:59 ` Robert A Duff
2008-01-09 1:17 ` Jeffrey R. Carter
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