1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
5 -- 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 --
9 -- Copyright (C) 1992-2006, Free Software Foundation, Inc. --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 2, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING. If not, write --
19 -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
20 -- Boston, MA 02110-1301, USA. --
22 -- As a special exception, if other files instantiate generics from this --
23 -- unit, or you link this unit with other files to produce an executable, --
24 -- this unit does not by itself cause the resulting executable to be --
25 -- covered by the GNU General Public License. This exception does not --
26 -- however invalidate any other reasons why the executable file might be --
27 -- covered by the GNU Public License. --
29 -- GNAT was originally developed by the GNAT team at New York University. --
30 -- Extensive contributions were provided by Ada Core Technologies Inc. --
32 ------------------------------------------------------------------------------
34 with System
.Finalization_Implementation
;
35 package body Ada
.Finalization
.List_Controller
is
37 package SFI
renames System
.Finalization_Implementation
;
43 procedure Finalize
(Object
: in out List_Controller
) is
44 use type SFR
.Finalizable_Ptr
;
46 Last_Ptr
: constant SFR
.Finalizable_Ptr
:= Object
.Last
'Unchecked_Access;
49 -- First take note of the fact that finalization of this collection has
52 Object
.F
:= SFI
.Collection_Finalization_Started
;
54 -- Then finalize all the objects. Note that finalization can call
55 -- Unchecked_Deallocation on other objects in the same collection,
56 -- which will cause them to be removed from the list if we have not
57 -- gotten to them yet. However, allocation in the collection will raise
58 -- Program_Error, due to the above Collection_Finalization_Started.
60 while Object
.First
.Next
/= Last_Ptr
loop
61 SFI
.Finalize_One
(Object
.First
.Next
.all);
65 procedure Finalize
(Object
: in out Simple_List_Controller
) is
67 SFI
.Finalize_List
(Object
.F
);
75 procedure Initialize
(Object
: in out List_Controller
) is
77 Object
.F
:= Object
.First
'Unchecked_Access;
78 Object
.First
.Next
:= Object
.Last
'Unchecked_Access;
79 Object.Last.Prev := Object.First'Unchecked_Access;
82 end Ada.Finalization.List_Controller;