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From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: Task safe containers? Help needed.
Date: Mon, 9 Oct 2017 16:54:13 -0500
Organization: JSA Research & Innovation
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"Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> wrote in message 
news:orci8c$mpl$1@gioia.aioe.org...
> On 2017-10-08 06:27, reinert wrote:
>
>> if I want to access a container (Vector, Set, Map) by several tasks
>> (updating and reading) - (hopefully) without loosing functionality of
>> the container.
>>
>> What should I do?
>
> 1. If operations are short and non-blocking put the container in a 
> protected object and route operations trough object's ones.

If some of the operations are functions, and you have an up-to-date 
compiler, then use aspect Exclusive_Functions so that the mutual exclusion 
extends to the functions as well as the procedures in the protected object. 
Otherwise, functions aren't *officially* exclusive, so you have to use all 
procedures for proper exclusion. (Note: I'm not aware of any Ada compiler 
that actually allows non-exclusive functions, but the possibility exists 
unless you use the aspect.)

                                       Randy.