83 lines
4.2 KiB
Ada
83 lines
4.2 KiB
Ada
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------------------------------------------------------------------------------
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-- --
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-- GNAT COMPILER COMPONENTS --
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-- --
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-- S Y S T E M . P O O L _ S I Z E --
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-- --
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-- S p e c --
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-- --
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-- Copyright (C) 1992-2011, Free Software Foundation, Inc. --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 3, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. --
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-- --
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-- As a special exception under Section 7 of GPL version 3, you are granted --
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-- additional permissions described in the GCC Runtime Library Exception, --
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-- version 3.1, as published by the Free Software Foundation. --
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-- --
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-- You should have received a copy of the GNU General Public License and --
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-- a copy of the GCC Runtime Library Exception along with this program; --
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-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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-- <http://www.gnu.org/licenses/>. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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with System.Storage_Pools;
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with System.Storage_Elements;
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package System.Pool_Size is
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pragma Elaborate_Body;
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-- Needed to ensure that library routines can execute allocators
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------------------------
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-- Stack_Bounded_Pool --
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------------------------
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-- Allocation strategy:
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-- Pool is a regular stack array, no use of malloc
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-- user specified size
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-- Space of pool is globally reclaimed by normal stack management
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-- Used in the compiler for access types with 'STORAGE_SIZE rep. clause
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-- Only used for allocating objects of the same type.
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type Stack_Bounded_Pool
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(Pool_Size : System.Storage_Elements.Storage_Count;
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Elmt_Size : System.Storage_Elements.Storage_Count;
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Alignment : System.Storage_Elements.Storage_Count)
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is
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new System.Storage_Pools.Root_Storage_Pool with record
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First_Free : System.Storage_Elements.Storage_Count;
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First_Empty : System.Storage_Elements.Storage_Count;
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Aligned_Elmt_Size : System.Storage_Elements.Storage_Count;
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The_Pool : System.Storage_Elements.Storage_Array
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(1 .. Pool_Size);
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end record;
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overriding function Storage_Size
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(Pool : Stack_Bounded_Pool) return System.Storage_Elements.Storage_Count;
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overriding procedure Allocate
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(Pool : in out Stack_Bounded_Pool;
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Address : out System.Address;
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Storage_Size : System.Storage_Elements.Storage_Count;
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Alignment : System.Storage_Elements.Storage_Count);
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overriding procedure Deallocate
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(Pool : in out Stack_Bounded_Pool;
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Address : System.Address;
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Storage_Size : System.Storage_Elements.Storage_Count;
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Alignment : System.Storage_Elements.Storage_Count);
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overriding procedure Initialize (Pool : in out Stack_Bounded_Pool);
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end System.Pool_Size;
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