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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: set_index and and end_of_file with just a stream reference
Date: Sat, 20 Feb 2021 16:01:11 +0000
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Mehdi Saada <00120260a@gmail.com> writes:

> By the way, what was the rational behind this  entry format ?
> Why don't we just have protected procedure ... when ... is and
> protected function ... when ... is ?

With protected subprograms, the caller only has to wait until no one
else is using the PO.

With entries, the caller has also to wait until the entry condition is
met (subprograms can continue to be called, from other tasks of course).