1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT COMPILER COMPONENTS                         --
4--                                                                          --
5--                 S Y S T E M . C H E C K E D _ P O O L S                  --
6--                                                                          --
7--                                 S p e c                                  --
8--                                                                          --
9--          Copyright (C) 1992-2019, 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 System.Storage_Elements;
33with System.Storage_Pools;
34
35package System.Checked_Pools is
36
37   type Checked_Pool is abstract
38     new System.Storage_Pools.Root_Storage_Pool with private;
39   --  Equivalent of storage pools with the addition that Dereference is
40   --  called on each implicit or explicit dereference of a pointer which
41   --  has such a storage pool.
42
43   procedure Dereference
44     (Pool                     : in out Checked_Pool;
45      Storage_Address          : Address;
46      Size_In_Storage_Elements : System.Storage_Elements.Storage_Count;
47      Alignment                : System.Storage_Elements.Storage_Count)
48   is abstract;
49   --  Called implicitly each time a pointer to a checked pool is dereferenced
50   --  All parameters in the profile are compatible with the profile of
51   --  Allocate/Deallocate: the Storage_Address corresponds to the address of
52   --  the dereferenced object, Size_in_Storage_Elements is its dynamic size
53   --  (and thus may involve an implicit dispatching call to size) and
54   --  Alignment is the alignment of the object.
55
56private
57   type Checked_Pool is abstract
58     new System.Storage_Pools.Root_Storage_Pool with null record;
59end System.Checked_Pools;
60