From: mg@harp.camb.inmet.com (Mitch Gart)
Subject: Re: Garbage Collection in Ada
Date: 1996/10/31
Date: 1996-10-31T00:00:00+00:00 [thread overview]
Message-ID: <E055IC.26I.0.-s@inmet.camb.inmet.com> (raw)
In-Reply-To: 01bbc6a3$4cf03480$829d6482@joy.ericsson.se
Jonas Nygren (ehsjony@ehs.ericsson.se) wrote:
(snip)
: package Collected is
: type Object is
: tagged record
: Reference_Count : Natural;
: end record;
: type Object_Access is access all Object'Class;
: type Handle is new Ada.Finalization with
: record
: Ref : Object_Access;
: end record;
: end Collected;
(snip)
This suffers from several problems:
- If you provide a function to do allocations,
function Allocate_Obj return Handle;
and users use this function, things work well, but if a user calls
"new Object" directly things don't work at all.
- Obj1 := Obj2; doesn't work because the reference count value is
copied. If Obj2's count is 3 before the assignment, after the assignment
Obj1's count is also 3 which is probably wrong.
Mitch Gart
next parent reply other threads:[~1996-10-31 0:00 UTC|newest]
Thread overview: 126+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <01bbc6a3$4cf03480$829d6482@joy.ericsson.se>
1996-10-31 0:00 ` Mitch Gart [this message]
1996-10-31 0:00 ` Garbage Collection in Ada Jonas Nygren
1996-11-03 0:00 ` Matthew Heaney
1996-11-06 0:00 ` Robert A Duff
1996-11-06 0:00 ` Norman H. Cohen
1996-11-01 0:00 ` Jon S Anthony
1996-11-06 0:00 ` Brian Rogoff
1996-11-07 0:00 ` Tucker Taft
1996-11-02 0:00 Jon S Anthony
-- strict thread matches above, loose matches on Subject: below --
1996-10-22 0:00 Brian Rogoff
1996-10-13 0:00 Jonas Nygren
1996-10-13 0:00 ` Lars Farm
1996-10-13 0:00 ` Robert Dewar
[not found] ` <19961014115513529729@dialup105-2-16.swipnet.se>
1996-10-16 0:00 ` Robert Dewar
1996-10-16 0:00 ` Lars Farm
1996-10-16 0:00 ` Robert Dewar
1996-10-16 0:00 ` Hans-Juergen Boehm
1996-10-17 0:00 ` Robert Dewar
1996-10-17 0:00 ` Hans-Juergen Boehm
1996-10-17 0:00 ` Robert A Duff
1996-10-17 0:00 ` Hans-Juergen Boehm
1996-10-17 0:00 ` Larry Kilgallen
1996-10-17 0:00 ` Lars Farm
1996-10-23 0:00 ` Robert Dewar
1996-10-16 0:00 ` Hans-Juergen Boehm
1996-10-16 0:00 ` Robert Dewar
1996-10-16 0:00 ` Hans-Juergen Boehm
1996-10-17 0:00 ` Robert Dewar
1996-10-17 0:00 ` Hans-Juergen Boehm
1996-10-17 0:00 ` Robert Dewar
1996-10-13 0:00 ` Larry Kilgallen
1996-10-14 0:00 ` Robert A Duff
1996-10-14 0:00 ` Lars Farm
1996-10-15 0:00 ` Robert A Duff
1996-10-16 0:00 ` Lars Farm
1996-10-16 0:00 ` Robert Dewar
1996-10-17 0:00 ` Robert A Duff
1996-10-19 0:00 ` Robert Dewar
1996-10-19 0:00 ` Lars Farm
1996-10-20 0:00 ` Robert Dewar
1996-10-20 0:00 ` Robert A Duff
1996-10-20 0:00 ` Robert Dewar
1996-10-21 0:00 ` Lars Farm
1996-10-21 0:00 ` Robert Dewar
1996-10-21 0:00 ` Lars Farm
1996-10-21 0:00 ` Geert Bosch
1996-10-21 0:00 ` Hans-Juergen Boehm
1996-10-23 0:00 ` Fergus Henderson
1996-10-24 0:00 ` Richard A. O'Keefe
1996-10-20 0:00 ` Robert A Duff
1996-10-20 0:00 ` Robert Dewar
1996-10-21 0:00 ` Hans-Juergen Boehm
1996-10-21 0:00 ` Robert Dewar
1996-10-19 0:00 ` Richard Kenner
1996-10-15 0:00 ` Hans-Juergen Boehm
1996-10-14 0:00 ` John Howard
1996-10-15 0:00 ` Lars Farm
1996-10-15 0:00 ` Robert A Duff
1996-10-15 0:00 ` Robert Dewar
1996-10-15 0:00 ` Hans-Juergen Boehm
1996-10-15 0:00 ` Lars Farm
1996-10-17 0:00 ` Thomas Kendelbacher
1996-10-17 0:00 ` Robert Dewar
1996-10-23 0:00 ` Richard A. O'Keefe
1996-10-23 0:00 ` Larry Kilgallen
1996-10-15 0:00 ` Keith Thompson
1996-10-13 0:00 ` Robert Dewar
1996-10-14 0:00 ` Jon S Anthony
1996-10-15 0:00 ` Robert Dewar
1996-10-15 0:00 ` Hannes Haug
1996-10-15 0:00 ` Robert I. Eachus
1996-10-15 0:00 ` Robert Dewar
1996-10-16 0:00 ` whiting_ms@corning.com (Matt Whiting)
1996-10-16 0:00 ` Robert Dewar
1996-10-17 0:00 ` John Howard
1996-10-17 0:00 ` Robert Dewar
1996-10-18 0:00 ` Hans-Juergen Boehm
1996-10-18 0:00 ` Lars Farm
1996-10-20 0:00 ` Robert A Duff
1996-10-18 0:00 ` Lars Farm
1996-10-19 0:00 ` Robert Dewar
1996-10-20 0:00 ` Lars Farm
1996-10-21 0:00 ` Nicolay Belofastow
1996-10-21 0:00 ` Robert Dewar
1996-10-21 0:00 ` Robert Dewar
1996-10-22 0:00 ` Lars Farm
1996-10-20 0:00 ` Robert A Duff
1996-10-20 0:00 ` Robert Dewar
1996-10-22 0:00 ` Mitch Gart
1996-10-23 0:00 ` Hans-Juergen Boehm
1996-10-27 0:00 ` Richard Riehle
1996-10-23 0:00 ` Fergus Henderson
1996-10-29 0:00 ` Jon S Anthony
1996-10-30 0:00 ` Brian Rogoff
1996-10-30 0:00 ` Jonas Nygren
1996-10-30 0:00 ` Jon S Anthony
1996-10-30 0:00 ` James Rogers
1996-10-16 0:00 ` Jon S Anthony
1996-10-16 0:00 ` Jon S Anthony
1996-10-16 0:00 ` Jon S Anthony
1996-10-16 0:00 ` Jon S Anthony
1996-10-17 0:00 ` Robert Dewar
1996-10-16 0:00 ` Ole-Hjalmar Kristensen FOU.TD/DELAB
1996-10-16 0:00 ` Robert Dewar
1996-10-17 0:00 ` Hans-Juergen Boehm
1996-10-17 0:00 ` Rick Hudson
1996-10-17 0:00 ` Robert I. Eachus
1996-10-17 0:00 ` Robert Dewar
1996-10-17 0:00 ` Richard Kenner
1996-10-18 0:00 ` Rick Hudson
1996-10-18 0:00 ` Jon S Anthony
1996-10-18 0:00 ` Robert Dewar
1996-10-18 0:00 ` Jon S Anthony
1996-10-23 0:00 ` Robert Dewar
1996-10-21 0:00 ` Laurent Pautet
1996-10-21 0:00 ` Jon S Anthony
1996-10-22 0:00 ` Tapani Rundgren
1996-10-22 0:00 ` Jon S Anthony
1996-10-23 0:00 ` Jon S Anthony
1996-10-24 0:00 ` Mitch Gart
1996-10-24 0:00 ` Hans-Juergen Boehm
1996-10-24 0:00 ` Robert I. Eachus
1996-10-25 0:00 ` Jon S Anthony
1996-10-28 0:00 ` Robert I. Eachus
1996-10-29 0:00 ` Hans-Juergen Boehm
1996-10-11 0:00 C++ Standardization (was: Once again, Ada absent from DoD SBIR solicitation) Dave Wood
1996-10-17 0:00 ` Garbage Collection in Ada Thomas Kendelbacher
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