1------------------------------------------------------------------------------ 2-- -- 3-- GNAT COMPILER COMPONENTS -- 4-- -- 5-- S Y S T E M . P O O L _ S I Z E -- 6-- -- 7-- S p e c -- 8-- -- 9-- Copyright (C) 1992-2011, 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_Pools; 33with System.Storage_Elements; 34 35package System.Pool_Size is 36 pragma Elaborate_Body; 37 -- Needed to ensure that library routines can execute allocators 38 39 ------------------------ 40 -- Stack_Bounded_Pool -- 41 ------------------------ 42 43 -- Allocation strategy: 44 45 -- Pool is a regular stack array, no use of malloc 46 -- user specified size 47 -- Space of pool is globally reclaimed by normal stack management 48 49 -- Used in the compiler for access types with 'STORAGE_SIZE rep. clause 50 -- Only used for allocating objects of the same type. 51 52 type Stack_Bounded_Pool 53 (Pool_Size : System.Storage_Elements.Storage_Count; 54 Elmt_Size : System.Storage_Elements.Storage_Count; 55 Alignment : System.Storage_Elements.Storage_Count) 56 is 57 new System.Storage_Pools.Root_Storage_Pool with record 58 First_Free : System.Storage_Elements.Storage_Count; 59 First_Empty : System.Storage_Elements.Storage_Count; 60 Aligned_Elmt_Size : System.Storage_Elements.Storage_Count; 61 The_Pool : System.Storage_Elements.Storage_Array 62 (1 .. Pool_Size); 63 end record; 64 65 overriding function Storage_Size 66 (Pool : Stack_Bounded_Pool) return System.Storage_Elements.Storage_Count; 67 68 overriding procedure Allocate 69 (Pool : in out Stack_Bounded_Pool; 70 Address : out System.Address; 71 Storage_Size : System.Storage_Elements.Storage_Count; 72 Alignment : System.Storage_Elements.Storage_Count); 73 74 overriding procedure Deallocate 75 (Pool : in out Stack_Bounded_Pool; 76 Address : System.Address; 77 Storage_Size : System.Storage_Elements.Storage_Count; 78 Alignment : System.Storage_Elements.Storage_Count); 79 80 overriding procedure Initialize (Pool : in out Stack_Bounded_Pool); 81 82end System.Pool_Size; 83