From: Berke Durak <durak@liafa.jussieu.fr>
To: caml-list@inria.fr
Subject: Re: [Caml-list] boxing of floats in records/classes
Date: Thu, 26 Sep 2002 13:14:47 +0200 [thread overview]
Message-ID: <20020926111447.GA8887@liafa.jussieu.fr> (raw)
In-Reply-To: <20020926100103.C30246@pauillac.inria.fr>
On Thu, Sep 26, 2002 at 10:01:03AM +0200, Xavier Leroy wrote:
> > Quick question: are mutable float fields in records or classes
> boxed?
>
> Yes, with the exception of records that have all fields of type float.
> In the latter case, the record is represented like a float array, with
> each float unboxed.
>
> > If so, why?
>
> Mainly because the runtime system and garbage collector support either
> blocks of pointers or blocks of unboxed data, but not mixed blocks
> containing both pointers and unboxed data.
Would it then be false to assume that if you have many floats in a record,
grouping them into a subrecord would reduce the boxing overhead ?
--
Berke Durak
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next prev parent reply other threads:[~2002-09-26 11:14 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-25 2:30 Michael Vanier
2002-09-26 8:01 ` Xavier Leroy
2002-09-26 11:14 ` Berke Durak [this message]
2002-09-27 9:04 ` Xavier Leroy
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