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From: hesobreira <herrsobreira@gmail.com>
Newsgroups: comp.lang.ada
Subject: Protected Objects - eggshell model
Date: Tue, 23 Dec 2008 14:08:30 -0800 (PST)
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Date: 2008-12-23T14:08:30-08:00
List-Id: <comp.lang.ada>

This was not clear to me while reading Barnes' book about protected
types.

There are two conditions that must be satisfied in order to execute
the entry call: no other task accessing the object at the same time
and the condition barrier evaluated to TRUE (eggshell, or two level
protection model). My question is: which one of these conditions is
evaluated first, the access lock or the condition barrier?

Thank you all in advance,
Hugo