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,FREEMAIL_FROM
	autolearn=ham autolearn_force=no version=3.4.4
X-Google-Thread: 103376,eed7a24b26e16574,start
X-Google-Attributes: gid103376,domainid0,public,usenet
X-Google-Language: ENGLISH,ASCII-7-bit
Path: 
 g2news2.google.com!postnews.google.com!j39g2000yqn.googlegroups.com!not-for-mail
From: markp <markwork66@yahoo.com>
Newsgroups: comp.lang.ada
Subject: Quick Protected Object question
Date: Mon, 8 Dec 2008 05:34:36 -0800 (PST)
Organization: http://groups.google.com
Message-ID: 
 <7d83cfa9-a97c-4a74-8202-c15035d607fa@j39g2000yqn.googlegroups.com>
NNTP-Posting-Host: 157.127.124.15
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
X-Trace: posting.google.com 1228743277 5690 127.0.0.1 (8 Dec 2008 13:34:37
 GMT)
X-Complaints-To: groups-abuse@google.com
NNTP-Posting-Date: Mon, 8 Dec 2008 13:34:37 +0000 (UTC)
Complaints-To: groups-abuse@google.com
Injection-Info: j39g2000yqn.googlegroups.com; posting-host=157.127.124.15;
	posting-account=jTWBqwoAAABUn9jGA4xSu9A8sRwazGmt
User-Agent: G2/1.0
X-HTTP-UserAgent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1;
 .NET
	CLR 1.1.4322; InfoPath.1),gzip(gfe),gzip(gfe)
Xref: g2news2.google.com comp.lang.ada:3906
Date: 2008-12-08T05:34:36-08:00
List-Id: <comp.lang.ada>

I have a very quick protected object question. In a standard proected
object setup as follows:

protected Test is
   procedure A;
   procedure B;
private
   Z : integer := 0;
end Test;

protected body Test is
   procedure A is
   begin
      < set of statements>
   end A;

   procedure B is
   begin
      < set of statements>
   end B;
end Test;

The question is this: when procedure A is called, are all threads that
try to call B suspended until A finishes or, do the threads that call
B execute as long as A is not touching the private data "Z". Is the
lock at the procedure level or only at the data level?

Thank you.