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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- S Y S T E M . P O O L _ G L O B A L --
-- --
-- B o d y --
-- --
-- $Revision: 1.9 $
-- --
-- Copyright (C) 1992-2001, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 2, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING. If not, write --
-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
-- MA 02111-1307, USA. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
-- --
------------------------------------------------------------------------------
with System.Storage_Pools; use System.Storage_Pools;
with System.Storage_Elements;
with System.Memory;
package body System.Pool_Global is
package SSE renames System.Storage_Elements;
--------------
-- Allocate --
--------------
procedure Allocate
(Pool : in out Unbounded_No_Reclaim_Pool;
Address : out System.Address;
Storage_Size : SSE.Storage_Count;
Alignment : SSE.Storage_Count)
is
Allocated : System.Address;
begin
Allocated := Memory.Alloc (Memory.size_t (Storage_Size));
-- The call to Alloc returns an address whose alignment is compatible
-- with the worst case alignment requirement for the machine; thus the
-- Alignment argument can be safely ignored.
if Allocated = Null_Address then
raise Storage_Error;
else
Address := Allocated;
end if;
end Allocate;
----------------
-- Deallocate --
----------------
procedure Deallocate
(Pool : in out Unbounded_No_Reclaim_Pool;
Address : System.Address;
Storage_Size : SSE.Storage_Count;
Alignment : SSE.Storage_Count) is
begin
Memory.Free (Address);
end Deallocate;
------------------
-- Storage_Size --
------------------
function Storage_Size
(Pool : Unbounded_No_Reclaim_Pool)
return SSE.Storage_Count
is
begin
-- Intuitively, should return System.Memory_Size. But on Sun/Alsys,
-- System.Memory_Size > System.Max_Int, which means all you can do with
-- it is raise CONSTRAINT_ERROR...
return SSE.Storage_Count'Last;
end Storage_Size;
end System.Pool_Global;
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