gcc/ada/libgnat/s-parame__rtems.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                    S Y S T E M . P A R A M E T E R S                     --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1997-2018, 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 --  This is the RTEMS specific version
  33
  34 with Interfaces.C;
  35
  36 package body System.Parameters is
  37
  38    function ada_pthread_minimum_stack_size return Interfaces.C.size_t;
  39    pragma Import (C, ada_pthread_minimum_stack_size,
  40      "_ada_pthread_minimum_stack_size");
  41
  42    -------------------------
  43    -- Adjust_Storage_Size --
  44    -------------------------
  45
  46    function Adjust_Storage_Size (Size : Size_Type) return Size_Type is
  47    begin
  48       if Size = Unspecified_Size then
  49          return Default_Stack_Size;
  50
  51       elsif Size < Minimum_Stack_Size then
  52          return Minimum_Stack_Size;
  53
  54       else
  55          return Size;
  56       end if;
  57    end Adjust_Storage_Size;
  58
  59    ------------------------
  60    -- Default_Stack_Size --
  61    ------------------------
  62
  63    function Default_Stack_Size return Size_Type is
  64    begin
  65       return Size_Type (ada_pthread_minimum_stack_size);
  66    end Default_Stack_Size;
  67
  68    ------------------------
  69    -- Minimum_Stack_Size --
  70    ------------------------
  71
  72    function Minimum_Stack_Size return Size_Type is
  73
  74    begin
  75       return Size_Type (ada_pthread_minimum_stack_size);
  76    end Minimum_Stack_Size;
  77
  78 end System.Parameters;