83 lines
4.0 KiB
Ada
83 lines
4.0 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNAT COMPILER COMPONENTS --
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-- --
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-- A D A . F I N A L I Z A T I O N . L I S T _ C O N T R O L L E R --
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-- --
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-- B o d y --
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-- --
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-- Copyright (C) 1992-2006, Free Software Foundation, Inc. --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 2, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
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-- for more details. You should have received a copy of the GNU General --
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-- Public License distributed with GNAT; see file COPYING. If not, write --
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-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
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-- Boston, MA 02110-1301, USA. --
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-- --
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-- As a special exception, if other files instantiate generics from this --
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-- unit, or you link this unit with other files to produce an executable, --
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-- this unit does not by itself cause the resulting executable to be --
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-- covered by the GNU General Public License. This exception does not --
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-- however invalidate any other reasons why the executable file might be --
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-- covered by the GNU Public License. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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with System.Finalization_Implementation;
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package body Ada.Finalization.List_Controller is
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package SFI renames System.Finalization_Implementation;
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--------------
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-- Finalize --
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--------------
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procedure Finalize (Object : in out List_Controller) is
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use type SFR.Finalizable_Ptr;
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Last_Ptr : constant SFR.Finalizable_Ptr := Object.Last'Unchecked_Access;
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begin
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-- First take note of the fact that finalization of this collection has
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-- started.
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Object.F := SFI.Collection_Finalization_Started;
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-- Then finalize all the objects. Note that finalization can call
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-- Unchecked_Deallocation on other objects in the same collection,
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-- which will cause them to be removed from the list if we have not
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-- gotten to them yet. However, allocation in the collection will raise
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-- Program_Error, due to the above Collection_Finalization_Started.
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while Object.First.Next /= Last_Ptr loop
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SFI.Finalize_One (Object.First.Next.all);
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end loop;
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end Finalize;
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procedure Finalize (Object : in out Simple_List_Controller) is
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begin
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SFI.Finalize_List (Object.F);
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Object.F := null;
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end Finalize;
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----------------
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-- Initialize --
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----------------
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procedure Initialize (Object : in out List_Controller) is
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begin
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Object.F := Object.First'Unchecked_Access;
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Object.First.Next := Object.Last 'Unchecked_Access;
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Object.Last.Prev := Object.First'Unchecked_Access;
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end Initialize;
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end Ada.Finalization.List_Controller;
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