gcc/ada/s-po32gl.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                 S Y S T E M . P O O L _ 3 2 _ G L O B A L                --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1992-2011, 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 3,  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.                                     --
  17 --                                                                          --
  18 -- As a special exception under Section 7 of GPL version 3, you are granted --
  19 -- additional permissions described in the GCC Runtime Library Exception,   --
  20 -- version 3.1, as published by the Free Software Foundation.               --
  21 --                                                                          --
  22 -- You should have received a copy of the GNU General Public License and    --
  23 -- a copy of the GCC Runtime Library Exception along with this program;     --
  24 -- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
  25 -- <http://www.gnu.org/licenses/>.                                          --
  26 --                                                                          --
  27 -- GNAT was originally developed  by the GNAT team at  New York University. --
  28 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  29 --                                                                          --
  30 ------------------------------------------------------------------------------
  31
  32 --  Storage pool corresponding to default global storage pool used for types
  33 --  designated by a 32 bits access type for which no storage pool is specified.
  34 --  This is specific to VMS.
  35
  36 with System;
  37 with System.Storage_Pools;
  38 with System.Storage_Elements;
  39
  40 package System.Pool_32_Global is
  41    pragma Elaborate_Body;
  42    --  Needed to ensure that library routines can execute allocators
  43
  44    --  Allocation strategy:
  45
  46    --    Call to malloc/free for each Allocate/Deallocate
  47    --    No user specifiable size
  48    --    No automatic reclaim
  49    --    Minimal overhead
  50
  51    --  Pool simulating the allocation/deallocation strategy used by the
  52    --  compiler for access types globally declared.
  53
  54    type Unbounded_No_Reclaim_Pool_32 is new
  55      System.Storage_Pools.Root_Storage_Pool with null record;
  56
  57    overriding function Storage_Size
  58      (Pool : Unbounded_No_Reclaim_Pool_32)
  59       return System.Storage_Elements.Storage_Count;
  60
  61    overriding procedure Allocate
  62      (Pool         : in out Unbounded_No_Reclaim_Pool_32;
  63       Address      : out System.Address;
  64       Storage_Size : System.Storage_Elements.Storage_Count;
  65       Alignment    : System.Storage_Elements.Storage_Count);
  66
  67    overriding procedure Deallocate
  68      (Pool         : in out Unbounded_No_Reclaim_Pool_32;
  69       Address      : System.Address;
  70       Storage_Size : System.Storage_Elements.Storage_Count;
  71       Alignment    : System.Storage_Elements.Storage_Count);
  72
  73    --  Pool object used by the compiler when implicit Storage Pool objects are
  74    --  explicitly referred to. For instance when writing something like:
  75    --     for T'Storage_Pool use Q'Storage_Pool;
  76    --  and Q'Storage_Pool hasn't been defined explicitly.
  77
  78    Global_Pool_32_Object : Unbounded_No_Reclaim_Pool_32;
  79
  80 end System.Pool_32_Global;