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Diffstat (limited to 'gcc/ada/s-pooglo.adb')
| -rw-r--r-- | gcc/ada/s-pooglo.adb | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/gcc/ada/s-pooglo.adb b/gcc/ada/s-pooglo.adb new file mode 100644 index 00000000000..11f265eb1e3 --- /dev/null +++ b/gcc/ada/s-pooglo.adb @@ -0,0 +1,98 @@ +------------------------------------------------------------------------------ +-- -- +-- 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; |