gcc/ada/5rparame.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 --                                                                          --
  10 --          Copyright (C) 1997-1998 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 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  32 --                                                                          --
  33 ------------------------------------------------------------------------------
  34
  35 --  This is the RTEMS specific version
  36
  37 with Interfaces.C;
  38
  39 package body System.Parameters is
  40
  41    function ada_pthread_minimum_stack_size return Interfaces.C.size_t;
  42    pragma Import (C, ada_pthread_minimum_stack_size,
  43      "_ada_pthread_minimum_stack_size");
  44
  45    ------------------------
  46    -- Default_Stack_Size --
  47    ------------------------
  48
  49    function Default_Stack_Size return Size_Type is
  50    begin
  51       return Size_Type (ada_pthread_minimum_stack_size);
  52    end Default_Stack_Size;
  53
  54    ------------------------
  55    -- Minimum_Stack_Size --
  56    ------------------------
  57
  58    function Minimum_Stack_Size return Size_Type is
  59
  60    begin
  61       return Size_Type (ada_pthread_minimum_stack_size);
  62    end Minimum_Stack_Size;
  63
  64    -------------------------
  65    -- Adjust_Storage_Size --
  66    -------------------------
  67
  68    function Adjust_Storage_Size (Size : Size_Type) return Size_Type is
  69    begin
  70       if Size = Unspecified_Size then
  71          return Default_Stack_Size;
  72
  73       elsif Size < Minimum_Stack_Size then
  74          return Minimum_Stack_Size;
  75
  76       else
  77          return Size;
  78       end if;
  79    end Adjust_Storage_Size;
  80
  81 end System.Parameters;