------------------------------------------------------------------------------
-- G N A T C O L L --
-- --
-- Copyright (C) 2005-2018, AdaCore --
-- --
-- This library is free software; you can redistribute it and/or modify it --
-- under terms of the GNU General Public License as published by the Free --
-- Software Foundation; either version 3, or (at your option) any later --
-- version. This library is distributed in the hope that it will be useful, --
-- but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHAN- --
-- TABILITY or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception, --
-- version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
------------------------------------------------------------------------------
-- This package provides a storage pool that allows you to select any
-- possible alignment for your data.
-- The alignment itself is chosen through discriminant of the pool
-- itself.
--
-- My_Pool : Unbounded_No_Reclaim_Align_Pool (Alignment => 64);
-- type My_Data is ...;
-- for My_Data'Storage_Pool use My_Pool;
with System.Storage_Pools;
with System.Storage_Elements;
package GNATCOLL.Storage_Pools.Alignment is
pragma Elaborate_Body;
-- Needed to ensure that library routines can execute allocators
type Unbounded_No_Reclaim_Align_Pool
(Alignment : System.Storage_Elements.Storage_Count)
is new System.Storage_Pools.Root_Storage_Pool with private;
-- A storage pool that uses malloc() internally, but always returns
-- addresses aligned on Alignment bytes.
private
type Unbounded_No_Reclaim_Align_Pool
(Alignment : System.Storage_Elements.Storage_Count)
is new System.Storage_Pools.Root_Storage_Pool with null record;
overriding function Storage_Size
(Pool : Unbounded_No_Reclaim_Align_Pool)
return System.Storage_Elements.Storage_Count;
overriding procedure Allocate
(Pool : in out Unbounded_No_Reclaim_Align_Pool;
Address : out System.Address;
Storage_Size : System.Storage_Elements.Storage_Count;
Alignment : System.Storage_Elements.Storage_Count);
overriding procedure Deallocate
(Pool : in out Unbounded_No_Reclaim_Align_Pool;
Address : System.Address;
Storage_Size : System.Storage_Elements.Storage_Count;
Alignment : System.Storage_Elements.Storage_Count);
end GNATCOLL.Storage_Pools.Alignment;