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,a31b00ad713d92f9
X-Google-Attributes: gid103376,public
X-Google-Language: ENGLISH,ASCII-7-bit
Path: 
 g2news1.google.com!news1.google.com!newshub.stanford.edu!news.kjsl.com!news-peer-lilac.gradwell.net!not-for-mail
From: Rob Norris <firstname.lastname@baesystems.com>
Newsgroups: comp.lang.ada
Subject: Re: Impossible problem? A protected buffer to queue objects of a
 class-wide type
Date: Wed, 11 Apr 2007 13:25:54 +0100
Message-ID: <ilkp139uool31fc8opd7b94jpmctvndeg3@4ax.com>
References: <461cc46d$1_1@glkas0286.greenlnk.net>
X-Newsreader: Forte Free Agent 3.3/32.846
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Original-NNTP-Posting-Host: glkas0286.greenlnk.net
NNTP-Posting-Host: 20.133.0.1
X-Trace: 1176294335 news.gradwell.net 760 dnews/20.133.0.1:56143
X-Complaints-To: news-abuse@gradwell.net
Xref: g2news1.google.com comp.lang.ada:14908
Date: 2007-04-11T13:25:54+01:00
List-Id: <comp.lang.ada>

>
>(b) To support this call, Dequeue must be written as a function. As such, it 
>cannot change the protected queue. What I need is the "entry" functionality, 
>since I want the Dequeue to wait if the queue is empty, and I want the item 
>to be removed from the queue as well as retrieved.

Quick thought:
Is it possible to pass into the function a reference to the queue?
Then you should be able change the content of the queue as you see fit.