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   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                 S Y S T E M . S T O R A G E _ P O O L S                  --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1992-2002 Free Software Foundation, Inc.          --
  10 --                                                                          --
  11 -- This specification is derived from the Ada Reference Manual for use with --
  12 -- GNAT. The copyright notice above, and the license provisions that follow --
  13 -- apply solely to the  contents of the part following the private keyword. --
  14 --                                                                          --
  15 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  16 -- terms of the  GNU General Public License as published  by the Free Soft- --
  17 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  18 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  19 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  20 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  21 -- for  more details.  You should have  received  a copy of the GNU General --
  22 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  23 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  24 -- MA 02111-1307, USA.                                                      --
  25 --                                                                          --
  26 -- As a special exception,  if other files  instantiate  generics from this --
  27 -- unit, or you link  this unit with other files  to produce an executable, --
  28 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  29 -- covered  by the  GNU  General  Public  License.  This exception does not --
  30 -- however invalidate  any other reasons why  the executable file  might be --
  31 -- covered by the  GNU Public License.                                      --
  32 --                                                                          --
  33 -- GNAT was originally developed  by the GNAT team at  New York University. --
  34 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  35 --                                                                          --
  36 ------------------------------------------------------------------------------
  37
  38 with Ada.Finalization;
  39 with System.Storage_Elements;
  40
  41 package System.Storage_Pools is
  42    pragma Preelaborate (System.Storage_Pools);
  43
  44    type Root_Storage_Pool is abstract
  45      new Ada.Finalization.Limited_Controlled with private;
  46
  47    procedure Allocate
  48      (Pool                     : in out Root_Storage_Pool;
  49       Storage_Address          : out Address;
  50       Size_In_Storage_Elements : in System.Storage_Elements.Storage_Count;
  51       Alignment                : in System.Storage_Elements.Storage_Count)
  52    is abstract;
  53
  54    procedure Deallocate
  55      (Pool                     : in out Root_Storage_Pool;
  56       Storage_Address          : in Address;
  57       Size_In_Storage_Elements : in System.Storage_Elements.Storage_Count;
  58       Alignment                : in System.Storage_Elements.Storage_Count)
  59    is abstract;
  60
  61    function Storage_Size
  62      (Pool : Root_Storage_Pool)
  63       return System.Storage_Elements.Storage_Count
  64    is abstract;
  65
  66 private
  67    --  The following two procedures support the use of class-wide pool
  68    --  objects in storage pools. When a local type is given a class-wide
  69    --  storage pool, allocation and deallocation for the type must dispatch
  70    --  to the operation of the specific pool, which is achieved by a call
  71    --  to these procedures. (When the pool type is specific, the back-end
  72    --  generates a call to the statically identified operation of the type).
  73
  74    procedure Allocate_Any
  75     (Pool                     : in out Root_Storage_Pool'Class;
  76      Storage_Address          : out Address;
  77      Size_In_Storage_Elements : System.Storage_Elements.Storage_Count;
  78      Alignment                : System.Storage_Elements.Storage_Count);
  79
  80    procedure Deallocate_Any
  81     (Pool                     : in out Root_Storage_Pool'Class;
  82      Storage_Address          : Address;
  83      Size_In_Storage_Elements : System.Storage_Elements.Storage_Count;
  84      Alignment                : System.Storage_Elements.Storage_Count);
  85
  86    type Root_Storage_Pool is abstract
  87      new Ada.Finalization.Limited_Controlled with null record;
  88 end System.Storage_Pools;