1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
5 -- S Y S T E M . P O O L _ G L O B A L --
9 -- Copyright (C) 1992-2024, 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 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. --
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. --
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/>. --
27 -- GNAT was originally developed by the GNAT team at New York University. --
28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
30 ------------------------------------------------------------------------------
32 -- Storage pool corresponding to default global storage pool used for types
33 -- for which no storage pool is specified.
35 with System
.Storage_Pools
;
36 with System
.Storage_Elements
;
38 package System
.Pool_Global
is
39 pragma Elaborate_Body
;
40 -- Needed to ensure that library routines can execute allocators
42 -- Allocation strategy:
44 -- Call to malloc/free for each Allocate/Deallocate
45 -- No user specifiable size
46 -- No automatic reclaim
49 -- Pool simulating the allocation/deallocation strategy used by the
50 -- compiler for access types globally declared.
52 type Unbounded_No_Reclaim_Pool
is new
53 System
.Storage_Pools
.Root_Storage_Pool
with null record;
55 overriding
function Storage_Size
56 (Pool
: Unbounded_No_Reclaim_Pool
)
57 return System
.Storage_Elements
.Storage_Count
;
59 overriding
procedure Allocate
60 (Pool
: in out Unbounded_No_Reclaim_Pool
;
61 Address
: out System
.Address
;
62 Storage_Size
: System
.Storage_Elements
.Storage_Count
;
63 Alignment
: System
.Storage_Elements
.Storage_Count
);
65 overriding
procedure Deallocate
66 (Pool
: in out Unbounded_No_Reclaim_Pool
;
67 Address
: System
.Address
;
68 Storage_Size
: System
.Storage_Elements
.Storage_Count
;
69 Alignment
: System
.Storage_Elements
.Storage_Count
);
71 -- Pool object used by the compiler when implicit Storage Pool objects are
72 -- explicitly referred to. For instance when writing something like:
73 -- for T'Storage_Pool use Q'Storage_Pool;
74 -- and Q'Storage_Pool hasn't been defined explicitly.
76 Global_Pool_Object
: aliased Unbounded_No_Reclaim_Pool
;
78 end System
.Pool_Global
;