File : s-finroo.ads

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--                                                                          --
--                         GNAT COMPILER COMPONENTS                         --
--                                                                          --
--                S Y S T E M . F I N A L I Z A T I O N _ R O O T           --
--                                                                          --
--                                 S p e c                                  --
--                                                                          --
--                            $Revision: 1.6 $                              --
--                                                                          --
--   Copyright (C) 1992,1993,1994,1995,1996 Free Software Foundation, Inc.  --
--                                                                          --
-- GNAT is free software;  you can  redistribute it  and/or modify it under --
-- terms of the  GNU General Public License as published  by the Free Soft- --
-- ware  Foundation;  either version 2,  or (at your option) any later ver- --
-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
-- for  more details.  You should have  received  a copy of the GNU General --
-- Public License  distributed with GNAT;  see file COPYING.  If not, write --
-- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
-- MA 02111-1307, USA.                                                      --
--                                                                          --
-- As a special exception,  if other files  instantiate  generics from this --
-- unit, or you link  this unit with other files  to produce an executable, --
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-- covered  by the  GNU  General  Public  License.  This exception does not --
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-- covered by the  GNU Public License.                                      --
--                                                                          --
-- GNAT was originally developed  by the GNAT team at  New York University. --
-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
--                                                                          --
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package System.Finalization_Root is
pragma Preelaborate (Finalization_Root);

   type Root_Controlled;

   type Finalizable_Ptr is access all Root_Controlled'Class;

   type Empty_Root_Controlled is abstract tagged null record;
   --  Just for the sake of Controlled equality (see Ada.Finalization)

   type Root_Controlled is new Empty_Root_Controlled with record
      Prev, Next : Finalizable_Ptr;
   end record;
   subtype Finalizable is Root_Controlled'Class;

   procedure Initialize (Object : in out Root_Controlled);
   procedure Finalize   (Object : in out Root_Controlled);
   procedure Adjust     (Object : in out Root_Controlled);

end System.Finalization_Root;