From: John English <je@bton.ac.uk>
Subject: Re: Ada Protected Object Tutorial #1
Date: 1999/12/16
Date: 1999-12-16T00:00:00+00:00 [thread overview]
Message-ID: <3858E5B3.9AB004E9@bton.ac.uk> (raw)
In-Reply-To: slrn85h77n.68i.kaz@ashi.FootPrints.net
Kaz Kylheku wrote:
> This approach to design is generally wasteful. It's more reasonable to have
> public methods which always lock and unlock, and unprotected methods which
> assume that an object is already locked. It's also useful for an object
> to expose lock and unlock methods, and expose unprotected operations, so that
> the user of the object can compose a sequence of operations into an indivisible
> block.
Congratulations, you've just invented the semaphore... :-)
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John English | mailto:je@brighton.ac.uk
Senior Lecturer | http://www.it.bton.ac.uk/staff/je
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University of Brighton | -- see http://burks.bton.ac.uk
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next prev parent reply other threads:[~1999-12-16 0:00 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-12-15 0:00 Ada Protected Object Tutorial #1 James S. Rogers
1999-12-16 0:00 ` Kaz Kylheku
1999-12-16 0:00 ` James S. Rogers
1999-12-17 0:00 ` Laurent Guerby
1999-12-16 0:00 ` John English [this message]
1999-12-16 0:00 ` Ed Falis
1999-12-16 0:00 ` Usenet Poster Boy
1999-12-17 0:00 ` Karel Th�nissen
1999-12-17 0:00 ` Laurent Guerby
1999-12-18 0:00 ` Karel Th�nissen
1999-12-18 0:00 ` Laurent Guerby
1999-12-18 0:00 ` Kaz Kylheku
1999-12-18 0:00 ` Laurent Guerby
1999-12-18 0:00 ` Kaz Kylheku
1999-12-19 0:00 ` Laurent Guerby
1999-12-20 0:00 ` Stanley R. Allen
1999-12-21 0:00 ` Robert I. Eachus
[not found] ` <33qr5scnbs04v391ev4541p5bv48hklg3q@4ax.com>
1999-12-20 0:00 ` Robert A Duff
1999-12-18 0:00 ` Robert A Duff
1999-12-18 0:00 ` Kaz Kylheku
1999-12-17 0:00 ` Mike Silva
1999-12-24 0:00 ` Kenneth Almquist
1999-12-17 0:00 ` Robert A Duff
1999-12-17 0:00 ` Vladimir Olensky
1999-12-17 0:00 ` Tucker Taft
1999-12-18 0:00 ` Kaz Kylheku
1999-12-18 0:00 ` Robert A Duff
1999-12-18 0:00 ` Kaz Kylheku
1999-12-19 0:00 ` swhalen
1999-12-19 0:00 ` Kaz Kylheku
1999-12-19 0:00 ` Robert Dewar
1999-12-19 0:00 ` Laurent Guerby
1999-12-20 0:00 ` Vladimir Olensky
1999-12-26 0:00 ` Ehud Lamm
1999-12-26 0:00 ` Robert Dewar
1999-12-26 0:00 ` Kaz Kylheku
1999-12-27 0:00 ` Robert Dewar
1999-12-27 0:00 ` Robert Dewar
1999-12-27 0:00 ` Jean-Pierre Rosen
1999-12-27 0:00 ` Richard D Riehle
1999-12-27 0:00 ` Robert Dewar
1999-12-31 0:00 ` Richard D Riehle
2000-01-02 0:00 ` Tucker Taft
1999-12-17 0:00 ` Robert A Duff
1999-12-18 0:00 ` Kaz Kylheku
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