From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham
	autolearn_force=no version=3.4.4
X-Google-Thread: 103376,6689542a60dbcc55
X-Google-NewGroupId: yes
X-Google-Attributes: gida07f3367d7,domainid0,public,usenet
X-Google-Language: ENGLISH,UTF8
Path: 
 g2news1.google.com!news3.google.com!feeder.news-service.com!feeder.news-service.com!85.214.198.2.MISMATCH!eternal-september.org!feeder.eternal-september.org!.POSTED!not-for-mail
From: "J-P. Rosen" <rosen@adalog.fr>
Newsgroups: comp.lang.ada
Subject: Re: Discriminated records are not the most efficient, but ...
Date: Mon, 23 Aug 2010 08:25:59 +0200
Organization: Adalog
Message-ID: <i4t49q$kpu$1@news.eternal-september.org>
References: <op.vhs349clule2fv@garhos> <op.vhs5xtdlule2fv@garhos>
 <op.vhtrcjhmule2fv@garhos> <op.vhuw06a1ule2fv@garhos>
 <874oemcr37.fsf@mid.deneb.enyo.de> <op.vhu027nyule2fv@garhos>
 <4c71e5fc$0$2388$4d3efbfe@news.sover.net> <op.vhvgxm1rule2fv@garhos>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Injection-Date: Mon, 23 Aug 2010 06:26:02 +0000 (UTC)
Injection-Info: mx03.eternal-september.org;
 posting-host="z/xN1DBP8RUb+r9ug/i0hg";
	logging-data="21310"; mail-complaints-to="abuse@eternal-september.org";
	posting-account="U2FsdGVkX1+F0ya9bbToajvC+9s+tJZ6"
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; fr;
 rv:1.9.2.8) Gecko/20100802 Thunderbird/3.1.2
In-Reply-To: <op.vhvgxm1rule2fv@garhos>
Cancel-Lock: sha1:8aahxeqnkCu3MLI8Km8X9QLsLss=
Xref: g2news1.google.com comp.lang.ada:13646
Date: 2010-08-23T08:25:59+02:00
List-Id: <comp.lang.ada>

Le 23/08/2010 05:50, Yannick Duchêne (Hibou57) a écrit :
> So task or protected are compilation_unit... only when separate ? So
> what makes it not a compilation_unit when not separate ?
> 
> Unless I am missing something else, this seems strange to me.
> 
Don't be fooled by the word "unit". In Ada, you have program units and
compilation units, and they are orthogonal.
-Program unit: a logical unit that can have behaviour (i.e. statements).
-Compilation unit: something that can be given to the compiler without
being nested into something else.

For example, a package is one program unit. It is made of two parts,
spec and body, where each is a compilation unit (can be compiled
separately).

A task is a type, not a module. Therefore, it is a program unit, not a
compilation unit. However, any separate body can be compiled separately
(of course!), and is a compilation unit.

-- 
---------------------------------------------------------
           J-P. Rosen (rosen@adalog.fr)
Visit Adalog's web site at http://www.adalog.fr