| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- S Y S T E M . P A R A M E T E R S -- |
| -- -- |
| -- B o d y -- |
| -- -- |
| -- Copyright (C) 1995-2005, Free Software Foundation, Inc. -- |
| -- -- |
| -- GNAT is free software; you can redistribute it and/or modify it under -- |
| -- terms of the GNU General Public License as published by the Free Soft- -- |
| -- ware Foundation; either version 2, or (at your option) any later ver- -- |
| -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- |
| -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- |
| -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- |
| -- for more details. You should have received a copy of the GNU General -- |
| -- Public License distributed with GNAT; see file COPYING. If not, write -- |
| -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, -- |
| -- Boston, MA 02110-1301, USA. -- |
| -- -- |
| -- As a special exception, if other files instantiate generics from this -- |
| -- unit, or you link this unit with other files to produce an executable, -- |
| -- this unit does not by itself cause the resulting executable to be -- |
| -- covered by the GNU General Public License. This exception does not -- |
| -- however invalidate any other reasons why the executable file might be -- |
| -- covered by the GNU Public License. -- |
| -- -- |
| -- GNAT was originally developed by the GNAT team at New York University. -- |
| -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- This is the default (used on all native platforms) version of this package |
| |
| package body System.Parameters is |
| |
| ------------------------- |
| -- Adjust_Storage_Size -- |
| ------------------------- |
| |
| function Adjust_Storage_Size (Size : Size_Type) return Size_Type is |
| begin |
| if Size = Unspecified_Size then |
| return Default_Stack_Size; |
| elsif Size < Minimum_Stack_Size then |
| return Minimum_Stack_Size; |
| else |
| return Size; |
| end if; |
| end Adjust_Storage_Size; |
| |
| ------------------------ |
| -- Default_Stack_Size -- |
| ------------------------ |
| |
| function Default_Stack_Size return Size_Type is |
| Default_Stack_Size : Integer; |
| pragma Import (C, Default_Stack_Size, "__gl_default_stack_size"); |
| begin |
| if Default_Stack_Size = -1 then |
| return 2 * 1024 * 1024; |
| else |
| return Size_Type (Default_Stack_Size); |
| end if; |
| end Default_Stack_Size; |
| |
| ------------------------ |
| -- Minimum_Stack_Size -- |
| ------------------------ |
| |
| function Minimum_Stack_Size return Size_Type is |
| begin |
| -- 12K is required for stack-checking to work reliably on most platforms |
| -- when using the GCC scheme to propagate an exception in the ZCX case. |
| |
| return 12 * 1024; |
| end Minimum_Stack_Size; |
| |
| end System.Parameters; |
