From: dewar@cs.nyu.edu (Robert Dewar)
Subject: Re: Ada is almost useless in embedded systems
Date: 1996/02/17
Date: 1996-02-17T00:00:00+00:00 [thread overview]
Message-ID: <dewar.824575347@schonberg> (raw)
In-Reply-To: 824259217.26321@assen.demon.co.uk
John McCabe said
"If you check the detail of pragma shared, I think you'll find this
does not provide the same facilities as the C 'volatile' attribute. I
have checked this according to my compiler manual, so I do know what
I'm talking about here.
Also, as I've mentioned elsewhere, I know nothing about Ada 95, all my
comments are purely Ada 83."
This is wrong, pragma shared corresponds to pragma Atomic in Ada 95,
not to pragma Volatile (and the volatile keyword in C).
Volatile does not require atomic access and can be applied to anything.
Atomic (Shared) can only be applied to objects for which atomic access
can be guaranteed, which is likely to be very restrictive.
There is no equivalent of pragma Volatile in Ada 83.
next prev parent reply other threads:[~1996-02-17 0:00 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <823906039.22113@assen.demon.co.uk>
[not found] ` <4fgrq3$mc4@qualcomm.com>
[not found] ` <dewar.823962356@schonberg>
1996-02-17 0:00 ` Ada is almost useless in embedded systems Tore Joergensen
1996-02-17 0:00 ` Robert Dewar
1996-02-19 0:00 ` Keith Thompson
1996-02-19 0:00 ` John McCabe
1996-02-21 0:00 ` Richard A. O'Keefe
1996-02-21 0:00 ` Norman H. Cohen
[not found] ` <824056183.18993@assen.demon.co.uk>
[not found] ` <311E924E.74CE@escmail.orl.mmc.com>
1996-02-17 0:00 ` Ada is great for embedded systems (was Ada is almost useless in embedded systems) Ken & Virginia Garlington
[not found] ` <4fnqpm$3nh@news.sanders.lockheed.com>
1996-02-19 0:00 ` Ada is almost useless in embedded systems AdaWorks
1996-02-21 0:00 ` Ken Garlington
1996-02-21 0:00 ` Hugh Dunne
[not found] ` <4fnp37$nj1@theopolis.orl.mmc.com>
1996-02-22 0:00 ` Alan Brain
1996-02-19 0:00 ` Jon S Anthony
1996-02-19 0:00 ` AdaWorks
1996-02-21 0:00 ` Ken Garlington
1996-02-23 0:00 ` AdaWorks
1996-02-19 0:00 ` R.A.L Williams
1996-02-21 0:00 ` Richard A. O'Keefe
[not found] ` <emery-0902962215150001@line316.nwm.mindlink.net>
[not found] ` <DMoA85.52I@eskimo.com>
[not found] ` <823965654.4500@assen.demon.co.uk>
[not found] ` <824165619.14894@assen.demon.co.uk>
[not found] ` <JSA.96Feb13133713@organon.com>
[not found] ` <824259217.26321@assen.demon.co.uk>
1996-02-17 0:00 ` Robert Dewar [this message]
1996-02-18 0:00 ` John McCabe
1996-02-18 0:00 ` Robert Dewar
1996-02-19 0:00 ` John McCabe
1996-02-20 0:00 ` Robert Dewar
1996-02-21 0:00 ` Fergus Henderson
[not found] ` <824332550.2485@assen.demon.co.uk>
1996-02-17 0:00 ` Ken & Virginia Garlington
1996-02-17 0:00 ` Robert Dewar
1996-02-18 0:00 ` John McCabe
1996-02-18 0:00 ` Robert Dewar
1996-02-19 0:00 ` John McCabe
[not found] ` <4fs7ml$cf1@rational.rational.com>
1996-02-26 0:00 ` Ada 83 " Alan Brain
1996-02-26 0:00 ` Ada is almost useless " R.A.L Williams
[not found] ` <4h3q56$1vk@goanna.cs.rmit.EDU.AU>
[not found] ` <dewar.825635955@schonberg>
[not found] ` <826571250.140@assen.demon.co.uk>
[not found] ` <dewar.826634800@schonberg>
1996-03-21 0:00 ` John McCabe
1996-03-23 0:00 ` Side-effect arithmetic again [was: Ada ... in embedded systems] John G. Volan
1996-03-23 0:00 ` Robert Dewar
1996-03-25 0:00 ` Tucker Taft
1996-03-25 0:00 ` Robert A Duff
1996-03-25 0:00 ` Norman H. Cohen
1996-03-26 0:00 ` John G. Volan
1996-03-26 0:00 ` Robert A Duff
1996-03-26 0:00 ` Tore Joergensen
1996-03-27 0:00 ` John G. Volan
1996-03-27 0:00 ` John G. Volan
1996-03-28 0:00 ` Tucker Taft
1996-03-28 0:00 ` Robert Dewar
1996-03-29 0:00 ` Tucker Taft
1996-03-29 0:00 ` Tucker Taft
1996-03-27 0:00 ` John G. Volan
1996-03-29 0:00 ` Robert A Duff
1996-03-30 0:00 ` John G. Volan
1996-03-31 0:00 ` AdaWorks
1996-04-01 0:00 ` Robert A Duff
1996-03-30 0:00 ` John G. Volan
1996-03-26 0:00 ` Robert Dewar
1996-03-29 0:00 ` Robert I. Eachus
[not found] ` <RALW.96Feb28100925@vulcan.gmrc.gecm.com>
[not found] ` <dewar.825775334@schonberg>
[not found] ` <RALW.96Mar8113005@vulcan.gecm.com>
[not found] ` <4hv2fb$6ra@cville-srv.wam.umd.edu>
[not found] ` <4xybp895y6.fsf@leibniz.enst-bretagne.fr>
[not found] ` <3144CC40.33A0@escmail.orl.mmc.com>
[not found] ` <dewar.826604375@schonberg>
[not found] ` <3145FF2C.6139@escmail.orl.mmc.com>
[not found] ` <dewar.826829407@schonberg>
[not found] ` <31499D21.1DA6@escmail.orl.mmc.com>
1996-03-15 0:00 ` Bug or Limitation? (was: Ada is almost useless in embedded systems) Robert Dewar
1996-03-16 0:00 ` Ted Dennison
1996-03-20 0:00 ` Side-effect arithmetic again [was: Ada ... in embedded systems] Robert I. Eachus
1996-03-20 0:00 ` Robert A Duff
1996-03-21 0:00 ` Peter Hermann
1996-03-21 0:00 ` Robert Dewar
1996-03-25 0:00 ` Robert I. Eachus
1996-03-28 0:00 ` Mats Weber
1996-03-29 0:00 ` John G. Volan
1996-03-20 0:00 ` John G. Volan
1996-03-22 0:00 ` Alan Brain
1996-03-21 0:00 ` Geert Bosch
1996-03-26 0:00 ` Mats Weber
1996-03-15 0:00 ` Ada is almost useless in embedded systems Robert I. Eachus
[not found] ` <dirk.827148504@demokrit>
1996-03-18 0:00 ` David Weller
1996-03-18 0:00 ` Alan Brain
[not found] ` <4ik5bm$ogg@dayuc.dayton.saic.com>
1996-03-18 0:00 ` Side-effect arithmetic again [was: Ada ... in embedded systems] Robert Dewar
1996-03-19 0:00 ` Norman H. Cohen
1996-03-19 0:00 ` Jay Martin
1996-03-21 0:00 ` Robert I. Eachus
1996-03-16 0:00 ` Ada is almost useless in embedded systems Kevin Dalley
[not found] <9603131418.AA01642@eight-ball>
1996-03-15 0:00 ` Norman H. Cohen
1996-03-15 0:00 ` Robert Dewar
1996-03-18 0:00 ` Peter Hermann
1996-03-18 0:00 ` Robert Dewar
1996-03-18 0:00 ` Stephen Crawley
1996-03-19 0:00 ` Laurent Guerby
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