1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
5 -- S Y S T E M . P O O L _ S I Z E --
10 -- Copyright (C) 1992,1993,1994 Free Software Foundation, Inc. --
12 -- GNAT is free software; you can redistribute it and/or modify it under --
13 -- terms of the GNU General Public License as published by the Free Soft- --
14 -- ware Foundation; either version 2, or (at your option) any later ver- --
15 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
16 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
17 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
18 -- for more details. You should have received a copy of the GNU General --
19 -- Public License distributed with GNAT; see file COPYING. If not, write --
20 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
21 -- MA 02111-1307, USA. --
23 -- As a special exception, if other files instantiate generics from this --
24 -- unit, or you link this unit with other files to produce an executable, --
25 -- this unit does not by itself cause the resulting executable to be --
26 -- covered by the GNU General Public License. This exception does not --
27 -- however invalidate any other reasons why the executable file might be --
28 -- covered by the GNU Public License. --
30 -- GNAT was originally developed by the GNAT team at New York University. --
31 -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
33 ------------------------------------------------------------------------------
35 with System
.Storage_Pools
;
36 with System
.Storage_Elements
;
38 package System
.Pool_Size
is
40 pragma Elaborate_Body
;
41 -- Needed to ensure that library routines can execute allocators
43 ------------------------
44 -- Stack_Bounded_Pool --
45 ------------------------
47 -- Allocation strategy:
49 -- Pool is a regular stack array, no use of malloc
50 -- user specified size
51 -- Space of pool is globally reclaimed by normal stack management
53 -- Used in the compiler for access types with 'STORAGE_SIZE rep. clause
54 -- Only used for allocating objects of the same type.
56 type Stack_Bounded_Pool
57 (Pool_Size
: System
.Storage_Elements
.Storage_Count
;
58 Elmt_Size
: System
.Storage_Elements
.Storage_Count
;
59 Alignment
: System
.Storage_Elements
.Storage_Count
)
61 new System
.Storage_Pools
.Root_Storage_Pool
with record
62 First_Free
: System
.Storage_Elements
.Storage_Count
;
63 First_Empty
: System
.Storage_Elements
.Storage_Count
;
64 Aligned_Elmt_Size
: System
.Storage_Elements
.Storage_Count
;
65 The_Pool
: System
.Storage_Elements
.Storage_Array
70 (Pool
: Stack_Bounded_Pool
)
71 return System
.Storage_Elements
.Storage_Count
;
74 (Pool
: in out Stack_Bounded_Pool
;
75 Address
: out System
.Address
;
76 Storage_Size
: System
.Storage_Elements
.Storage_Count
;
77 Alignment
: System
.Storage_Elements
.Storage_Count
);
80 (Pool
: in out Stack_Bounded_Pool
;
81 Address
: System
.Address
;
82 Storage_Size
: System
.Storage_Elements
.Storage_Count
;
83 Alignment
: System
.Storage_Elements
.Storage_Count
);
85 procedure Initialize
(Pool
: in out Stack_Bounded_Pool
);