Re: tasks, protected types and entries

["Sergey Koshcheyev" <serko84@hotmail.com>]

"Jim Rogers" <jimmaureenrogers@worldnet.att.net> wrote in message
news:3C94BA62.3050102@worldnet.att.net...
> To quote from "Ada as a Second Language" page 860:
>
> "A guard is a construct of the form
>     when condition =>
> that may precede some or all the alternatives of a selective accept.
> A guard has the same form as a barrier in a protected-type entry
> body (..) and plays a similar role."
>
> In short, yes, an entry barrier on a protected object does limit
> access to the protected object. A guard on a task's selective
> accept provides conditions for completion of a rendezvous.

By the way, what is the difference between a procedure X and an "entry X
when True" in a protected object? I remember that the "entry when True" was
used once in John Barnes' book, but I couldn't find an explanation of the
difference.

Sergey.