-- S Y S T E M . T A S K _ I N F O --
-- --
-- S p e c --
--- (Compiler Interface) --
-- --
--- Copyright (C) 1992-2001 Free Software Foundation, Inc. --
+-- Copyright (C) 1992-2009, 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- --
+-- ware Foundation; either version 3, 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, 59 Temple Place - Suite 330, Boston, --
--- MA 02111-1307, USA. --
+-- or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
--- 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. --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception, --
+-- version 3.1, as published by the Free Software Foundation. --
+-- --
+-- You should have received a copy of the GNU General Public License and --
+-- a copy of the GCC Runtime Library Exception along with this program; --
+-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
+-- <http://www.gnu.org/licenses/>. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
------------------------------------------------------------------------------
-- This package contains the definitions and routines associated with the
--- implementation of the Task_Info pragma. It is specialized appropriately
--- for targets that make use of this pragma.
+-- implementation and use of the Task_Info pragma. It is specialized
+-- appropriately for targets that make use of this pragma.
-- Note: the compiler generates direct calls to this interface, via Rtsfind.
-- Any changes to this interface may require corresponding compiler changes.
-with Unchecked_Deallocation;
+-- This unit may be used directly from an application program by providing
+-- an appropriate WITH, and the interface can be expected to remain stable.
+
package System.Task_Info is
-pragma Elaborate_Body;
--- To ensure that a body is allowed
+ pragma Preelaborate;
+ pragma Elaborate_Body;
+ -- To ensure that a body is allowed
-----------------------------------------
-- Implementation of Task_Info Feature --
-- The Task_Info pragma appears within a task definition (compare the
-- definition and implementation of pragma Priority). If no such pragma
- -- appears, then the value Task_Info_Unspecified is passed. If a pragma
+ -- appears, then the value Unspecified_Task_Info is passed. If a pragma
-- is present, then it supplies an alternative value. If the argument of
-- the pragma is a discriminant reference, then the value can be set on
-- a task by task basis by supplying the appropriate discriminant value.
-- implementations, but it must be a type that can be used as a
-- discriminant (i.e. a scalar or access type).
- type Task_Image_Type is access String;
- -- Used to generate a meaningful identifier for tasks that are variables
- -- and components of variables.
-
- procedure Free_Task_Image is new
- Unchecked_Deallocation (String, Task_Image_Type);
-
Unspecified_Task_Info : constant Task_Info_Type := Default_Scope;
-- Value passed to task in the absence of a Task_Info pragma
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