gcc/ada/s-chepoo.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                 S Y S T E M . C H E C K E D _ P O O L S                  --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --   Copyright (C) 1992,1993,1994,1995,1996 Free Software Foundation, Inc.  --
  10 --                                                                          --
  11 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  14 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  19 -- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
  20 -- Boston, MA 02110-1301, USA.                                              --
  21 --                                                                          --
  22 -- As a special exception,  if other files  instantiate  generics from this --
  23 -- unit, or you link  this unit with other files  to produce an executable, --
  24 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  25 -- covered  by the  GNU  General  Public  License.  This exception does not --
  26 -- however invalidate  any other reasons why  the executable file  might be --
  27 -- covered by the  GNU Public License.                                      --
  28 --                                                                          --
  29 -- GNAT was originally developed  by the GNAT team at  New York University. --
  30 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  31 --                                                                          --
  32 ------------------------------------------------------------------------------
  33
  34 with System.Storage_Elements;
  35 with System.Storage_Pools;
  36 package System.Checked_Pools is
  37
  38    type Checked_Pool is abstract
  39      new System.Storage_Pools.Root_Storage_Pool with private;
  40    --  Equivalent of storage pools with the addition that Dereference is
  41    --  called on each implicit or explicit dereference of a pointer which
  42    --  has such a storage pool
  43
  44    procedure Allocate
  45      (Pool                     : in out Checked_Pool;
  46       Storage_Address          : out Address;
  47       Size_In_Storage_Elements : in System.Storage_Elements.Storage_Count;
  48       Alignment                : in System.Storage_Elements.Storage_Count)
  49    is abstract;
  50
  51    procedure Deallocate
  52      (Pool                     : in out Checked_Pool;
  53       Storage_Address          : in Address;
  54       Size_In_Storage_Elements : in System.Storage_Elements.Storage_Count;
  55       Alignment                : in System.Storage_Elements.Storage_Count)
  56    is abstract;
  57
  58    function Storage_Size
  59      (Pool : Checked_Pool)
  60       return System.Storage_Elements.Storage_Count
  61    is abstract;
  62
  63    procedure Dereference
  64      (Pool                     : in out Checked_Pool;
  65       Storage_Address          : in Address;
  66       Size_In_Storage_Elements : in System.Storage_Elements.Storage_Count;
  67       Alignment                : in System.Storage_Elements.Storage_Count)
  68    is abstract;
  69    --  Called each time a pointer to a checked pool is dereferenced
  70
  71 private
  72    type Checked_Pool is abstract
  73      new System.Storage_Pools.Root_Storage_Pool with null record;
  74 end System.Checked_Pools;