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From: "Robert I. Eachus" <eachus@mitre.org>
Subject: Re: garbage collection
Date: 1999/08/19
Date: 1999-08-19T22:21:19+00:00	[thread overview]
Message-ID: <37BC8447.753C735D@mitre.org> (raw)
In-Reply-To: 37BC29D7.A803D4F9@Maths.UniNe.CH

> BTW: is it possible to prove that an object is not more accessed
> (of course: as long as its type exists) ? It's so easy to copy a pointer...

  Which is why Ada has access types instead. ;-)  Seriously, if an
access type goes out of scope, then it is legitimate to recover all
storage associated with the type.  If you have gone and done something
like using Unchecked_Conversion to convert to a different access type,
well, you asked for it.  (You can get into similar trouble by saving
addresses.

  The whole idea is that access types are safe as long as you don't go
outside the rules.

-- 

                                        Robert I. Eachus

with Standard_Disclaimer;
use  Standard_Disclaimer;
function Message (Text: in Clever_Ideas) return Better_Ideas is...




  reply	other threads:[~1999-08-19  0:00 UTC|newest]

Thread overview: 83+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
1999-08-18  0:00 garbage collection Ronald Ayoub
1999-08-18  0:00 ` tmoran
1999-08-18  0:00   ` Keith Thompson
1999-08-19  0:00     ` Tucker Taft
1999-08-19  0:00       ` Robert Dewar
1999-08-19  0:00       ` Robert Dewar
1999-08-20  0:00     ` tmoran
1999-08-20  0:00       ` Keith Thompson
1999-08-20  0:00         ` Matthew Heaney
1999-08-20  0:00           ` Keith Thompson
1999-08-21  0:00             ` Robert Dewar
1999-08-21  0:00               ` Matthew Heaney
1999-08-21  0:00             ` Matthew Heaney
1999-08-21  0:00           ` Robert Dewar
1999-08-21  0:00           ` garbage collection [storage pools] Robert Dewar
1999-08-21  0:00             ` Simon Wright
1999-08-21  0:00         ` garbage collection Brian Rogoff
1999-08-21  0:00       ` Robert Dewar
1999-08-21  0:00         ` Default Storage Pool (was Re: garbage collection) Simon Wright
1999-08-23  0:00           ` Robert A Duff
1999-08-18  0:00 ` garbage collection Pascal MALAISE
1999-08-20  0:00   ` David Botton
1999-08-18  0:00 ` Gisle S�lensminde
1999-08-18  0:00 ` Robert I. Eachus
1999-08-19  0:00   ` Gautier
1999-08-19  0:00     ` Robert I. Eachus [this message]
1999-08-20  0:00   ` Keith Thompson
1999-08-20  0:00     ` Robert Dewar
  -- strict thread matches above, loose matches on Subject: below --
1996-10-24  0:00 Garbage Collection H Brett Bolen
1989-01-10 19:16 Erland Sommarskog
1989-01-11 16:10 ` William Thomas Wolfe,2847,
1989-01-06 22:17 Erland Sommarskog
1989-01-08 18:40 ` William Thomas Wolfe,2847,
1989-01-09  3:56   ` Barry Margolin
1989-01-09 16:22     ` William Thomas Wolfe,2847,
1989-01-09 19:00       ` Barry Margolin
1989-01-10  2:50         ` William Thomas Wolfe,2847,
1989-01-11  9:22           ` Barry Margolin
1989-01-11 16:01             ` William Thomas Wolfe,2847,
1989-01-11 18:21               ` Barry Margolin
1989-01-12  2:43                 ` William Thomas Wolfe,2847,
1989-01-15  7:14                   ` Barry Margolin
1989-01-05 23:26 Erland Sommarskog
1988-12-31  0:04 Erland Sommarskog
1989-01-05  8:13 ` William Thomas Wolfe,2847,
1988-12-28 19:20 Erland Sommarskog
1988-12-30  0:52 ` Bill Wolfe
1988-12-26 23:37 Erland Sommarskog
1988-12-27 21:24 ` William Thomas Wolfe,2847,
1988-12-28 16:09   ` Snorri Agnarsson
1988-12-30  0:46     ` Bill Wolfe
1988-12-27 22:24 ` Bob Hathaway
1988-12-18 20:12 Erland Sommarskog
1988-12-20 19:04 ` Bill Wolfe
1988-12-13 20:07 Erland Sommarskog
1988-12-15 19:13 ` William Thomas Wolfe,2847,
1988-12-07 15:22 Collective response to := messa ron
1988-12-11 19:11 ` Garbage Collection William Thomas Wolfe,2847,
1988-12-12  5:29   ` John Gateley
1988-12-12 18:19     ` William Thomas Wolfe,2847,
1988-12-13  1:02       ` Alexander Klaiber
1988-12-13 18:37         ` William Thomas Wolfe,2847,
1988-12-13 23:36           ` Alexander Klaiber
1988-12-14  3:26             ` William Thomas Wolfe,2847,
1988-12-14 17:16             ` Stephe Leake
1988-12-15 14:43             ` Thomas P. Morris
1988-12-14 23:30           ` John Gateley
1988-12-15 19:25             ` William Thomas Wolfe,2847,
1988-12-19 16:12               ` John Gateley
1988-12-20 19:34                 ` Bill Wolfe
1988-12-13 20:22         ` William Thomas Wolfe,2847,
1988-12-14  6:40           ` Richard A. O'Keefe
1988-12-14 17:43             ` William Thomas Wolfe,2847,
1989-01-02 17:51   ` ryer
1989-01-05  8:31     ` William Thomas Wolfe,2847,
1989-01-06 16:58   ` ryer
1989-01-08 19:24     ` William Thomas Wolfe,2847,
     [not found] <145@krafla.rhi.hi.is>
     [not found] ` <272@fang.ATT.COM>
1988-03-29 13:47   ` From Modula to Oberon Denis Fortin
1988-03-30 15:32     ` Lawrence Crowl
1988-03-30 22:41       ` Hans Boehm
1988-03-31  6:27         ` Garbage Collection Richard Harter
1988-03-31 19:49           ` Hans Boehm
1988-04-01  5:43             ` Richard Harter
1988-04-01 18:43               ` Hans Boehm
1988-04-04 23:14           ` 00704a-Liber
1986-03-16 22:24 Garbage collection "Alexander L. Wolf"
     [not found] <1979@mit-eddi.UUCP>
     [not found] ` <2144@mit-eddie.UUCP>
1984-06-18 19:28   ` Abstraction In Ada Jon Mauney
1984-06-22  7:47     ` Doug Alan
1984-06-25  2:15       ` brad
1984-07-17 10:34         ` garbage collection Eric Smith
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