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 --                                                                          --
  10 --   Copyright (C) 1992,1993,1994,1995,1996 Free Software Foundation, Inc.  --
  11 --                                                                          --
  12 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  13 -- terms of the  GNU General Public License as published  by the Free Soft- --
  14 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  15 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  16 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  17 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  18 -- for  more details.  You should have  received  a copy of the GNU General --
  19 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  20 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  21 -- MA 02111-1307, USA.                                                      --
  22 --                                                                          --
  23 -- As a special exception,  if other files  instantiate  generics from this --
  24 -- unit, or you link  this unit with other files  to produce an executable, --
  25 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  26 -- covered  by the  GNU  General  Public  License.  This exception does not --
  27 -- however invalidate  any other reasons why  the executable file  might be --
  28 -- covered by the  GNU Public License.                                      --
  29 --                                                                          --
  30 -- GNAT was originally developed  by the GNAT team at  New York University. --
  31 -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
  32 --                                                                          --
  33 ------------------------------------------------------------------------------
  34
  35 with System.Storage_Elements;
  36 with System.Storage_Pools;
  37 package System.Checked_Pools is
  38
  39    type Checked_Pool is abstract
  40      new System.Storage_Pools.Root_Storage_Pool with private;
  41    --  Equivalent of storage pools with the addition that Dereference is
  42    --  called on each implicit or explicit dereference of a pointer which
  43    --  has such a storage pool
  44
  45    procedure Allocate
  46      (Pool                     : in out Checked_Pool;
  47       Storage_Address          : out Address;
  48       Size_In_Storage_Elements : in System.Storage_Elements.Storage_Count;
  49       Alignment                : in System.Storage_Elements.Storage_Count)
  50    is abstract;
  51
  52    procedure Deallocate
  53      (Pool                     : in out Checked_Pool;
  54       Storage_Address          : in Address;
  55       Size_In_Storage_Elements : in System.Storage_Elements.Storage_Count;
  56       Alignment                : in System.Storage_Elements.Storage_Count)
  57    is abstract;
  58
  59    function Storage_Size
  60      (Pool : Checked_Pool)
  61       return System.Storage_Elements.Storage_Count
  62    is abstract;
  63
  64    procedure Dereference
  65      (Pool                     : in out Checked_Pool;
  66       Storage_Address          : in Address;
  67       Size_In_Storage_Elements : in System.Storage_Elements.Storage_Count;
  68       Alignment                : in System.Storage_Elements.Storage_Count)
  69    is abstract;
  70    --  Called each time a pointer to a checked pool is dereferenced
  71
  72 private
  73    type Checked_Pool is abstract
  74      new System.Storage_Pools.Root_Storage_Pool with null record;
  75 end System.Checked_Pools;