1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
5 -- S Y S T E M . P O O L _ S I Z E --
9 -- Copyright (C) 1992-2004 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
.Storage_Pools
;
35 with System
.Storage_Elements
;
37 package System
.Pool_Size
is
39 pragma Elaborate_Body
;
40 -- Needed to ensure that library routines can execute allocators
42 ------------------------
43 -- Stack_Bounded_Pool --
44 ------------------------
46 -- Allocation strategy:
48 -- Pool is a regular stack array, no use of malloc
49 -- user specified size
50 -- Space of pool is globally reclaimed by normal stack management
52 -- Used in the compiler for access types with 'STORAGE_SIZE rep. clause
53 -- Only used for allocating objects of the same type.
55 type Stack_Bounded_Pool
56 (Pool_Size
: System
.Storage_Elements
.Storage_Count
;
57 Elmt_Size
: System
.Storage_Elements
.Storage_Count
;
58 Alignment
: System
.Storage_Elements
.Storage_Count
)
60 new System
.Storage_Pools
.Root_Storage_Pool
with record
61 First_Free
: System
.Storage_Elements
.Storage_Count
;
62 First_Empty
: System
.Storage_Elements
.Storage_Count
;
63 Aligned_Elmt_Size
: System
.Storage_Elements
.Storage_Count
;
64 The_Pool
: System
.Storage_Elements
.Storage_Array
69 (Pool
: Stack_Bounded_Pool
) return System
.Storage_Elements
.Storage_Count
;
72 (Pool
: in out Stack_Bounded_Pool
;
73 Address
: out System
.Address
;
74 Storage_Size
: System
.Storage_Elements
.Storage_Count
;
75 Alignment
: System
.Storage_Elements
.Storage_Count
);
78 (Pool
: in out Stack_Bounded_Pool
;
79 Address
: System
.Address
;
80 Storage_Size
: System
.Storage_Elements
.Storage_Count
;
81 Alignment
: System
.Storage_Elements
.Storage_Count
);
83 procedure Initialize
(Pool
: in out Stack_Bounded_Pool
);