1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT COMPILER COMPONENTS                         --
4--                                                                          --
5--                SYSTEM.STORAGE_POOLS.SUBPOOLS.FINALIZATION                --
6--                                                                          --
7--                                 B o d y                                  --
8--                                                                          --
9--          Copyright (C) 2011-2012, Free Software Foundation, Inc.         --
10--                                                                          --
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 3,  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.                                     --
17--                                                                          --
18-- As a special exception under Section 7 of GPL version 3, you are granted --
19-- additional permissions described in the GCC Runtime Library Exception,   --
20-- version 3.1, as published by the Free Software Foundation.               --
21--                                                                          --
22-- You should have received a copy of the GNU General Public License and    --
23-- a copy of the GCC Runtime Library Exception along with this program;     --
24-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
25-- <http://www.gnu.org/licenses/>.                                          --
26--                                                                          --
27-- GNAT was originally developed  by the GNAT team at  New York University. --
28-- Extensive contributions were provided by Ada Core Technologies Inc.      --
29--                                                                          --
30------------------------------------------------------------------------------
31
32with Ada.Unchecked_Deallocation;
33
34with System.Finalization_Masters; use System.Finalization_Masters;
35
36package body System.Storage_Pools.Subpools.Finalization is
37
38   -----------------------------
39   -- Finalize_And_Deallocate --
40   -----------------------------
41
42   procedure Finalize_And_Deallocate (Subpool : in out Subpool_Handle) is
43      procedure Free is new Ada.Unchecked_Deallocation (SP_Node, SP_Node_Ptr);
44
45   begin
46      --  Do nothing if the subpool was never created or never used. The latter
47      --  case may arise with an array of subpool implementations.
48
49      if Subpool = null
50        or else Subpool.Owner = null
51        or else Subpool.Node = null
52      then
53         return;
54      end if;
55
56      --  Clean up all controlled objects chained on the subpool's master
57
58      Finalize (Subpool.Master);
59
60      --  Remove the subpool from its owner's list of subpools
61
62      Detach (Subpool.Node);
63
64      --  Destroy the associated doubly linked list node which was created in
65      --  Set_Pool_Of_Subpools.
66
67      Free (Subpool.Node);
68
69      --  Dispatch to the user-defined implementation of Deallocate_Subpool
70
71      Deallocate_Subpool (Pool_Of_Subpool (Subpool).all, Subpool);
72
73      Subpool := null;
74   end Finalize_And_Deallocate;
75
76end System.Storage_Pools.Subpools.Finalization;
77