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) 1997-2002 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,  59 Temple Place - Suite 330,  Boston, --
20-- MA 02111-1307, 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--  This is the OS/2 specific version - default stacksizes need to be large
35
36package body System.Parameters is
37
38   ------------------------
39   -- Default_Stack_Size --
40   ------------------------
41
42   function Default_Stack_Size return Size_Type is
43   begin
44      --  The default stack size for extra tasks is based on the
45      --  default stack size for the main task (8 MB) and for the heap
46      --  (32 MB).
47
48      --  In OS/2 it doesn't hurt to define large stacks, unless
49      --  the system is configured to commit all memory reservations.
50      --  This is not a default configuration however.
51
52      return 1024 * 1024;
53   end Default_Stack_Size;
54
55   ------------------------
56   -- Minimum_Stack_Size --
57   ------------------------
58
59   function Minimum_Stack_Size return Size_Type is
60   begin
61      --  System functions may need 8 kB of stack, so 12 kB seems a
62      --  good minimum.
63      return 12 * 1024;
64   end Minimum_Stack_Size;
65
66   -------------------------
67   -- Adjust_Storage_Size --
68   -------------------------
69
70   function Adjust_Storage_Size (Size : Size_Type) return Size_Type is
71   begin
72      if Size = Unspecified_Size then
73         return Default_Stack_Size;
74
75      elsif Size < Minimum_Stack_Size then
76         return Minimum_Stack_Size;
77
78      else
79         return Size;
80      end if;
81   end Adjust_Storage_Size;
82
83end System.Parameters;
84