------------------------------------------------------------------------------
--                                                                          --
--                 GNU ADA RUNTIME LIBRARY (GNARL) COMPONENTS               --
--                                                                          --
--                 S Y S T E M . T A S K I N G . S T A G E S                --
--                                                                          --
--                                  S p e c                                 --
--                                                                          --
--                             $Revision: 1.18 $                             --
--                                                                          --
--           Copyright (c) 1991,1992,1993, FSU, All Rights Reserved         --
--                                                                          --
--  GNARL is free software; you can redistribute it and/or modify it  under --
--  terms  of  the  GNU  Library General Public License as published by the --
--  Free Software Foundation; either version 2, or (at  your  option)  any --
--  later  version.   GNARL is distributed in the hope that it will be use- --
--  ful, but but WITHOUT ANY WARRANTY; without even the implied warranty of --
--  MERCHANTABILITY  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Gen- --
--  eral Library Public License for more details.  You should have received --
--  a  copy of the GNU Library General Public License along with GNARL; see --
--  file COPYING. If not, write to the Free Software Foundation,  675  Mass --
--  Ave, Cambridge, MA 02139, USA.                                          --
--                                                                          --
------------------------------------------------------------------------------

package System.Tasking.Stages is
   --  This interface is described in the document
   --  Gnu Ada Runtime Library Interface (GNARLI).

   pragma Elaborate_Body (System.Tasking.Stages);

   function Current_Master return Master_ID;

   procedure Enter_Master;

   procedure Complete_Master;

   procedure Create_Task
     (Size          : Size_Type;
      Priority      : Integer;
      Num_Entries   : Task_Entry_Index;
      Master        : Master_ID;
      State         : Task_Procedure_Access;
      Discriminants : System.Address;
      Elaborated    : Access_Boolean;
      Chain         : in out Activation_Chain;
      Created_Task  : out Task_ID);

   procedure Activate_Tasks (Chain_Access : Activation_Chain_Access);

   procedure Expunge_Unactivated_Tasks (Chain : in out Activation_Chain);

   procedure Complete_Activation;

   procedure Complete_Task;

   function Terminated (T : Task_ID) return Boolean;

   -------------------------------
   -- RTS Internal Declarations --
   -------------------------------
   --  These declarations are not part of the GNARLI.

   procedure Leave_Task;
   --  Export for abortion

   procedure Init_Master (M : out Master_ID);
   pragma Inline (Init_Master);

   function Increment_Master (M : Master_ID) return Master_ID;
   pragma Inline (Increment_Master);

   function Decrement_Master (M : Master_ID) return Master_ID;
   pragma Inline (Decrement_Master);

end System.Tasking.Stages;


----------------------
-- REVISION HISTORY --
----------------------

--  ----------------------------
--  revision 1.16
--  date: Tue May 31 13:41:42 1994;  author: giering
--  RTS Restructuring (Separating out non-compiler-interface definitions)
--  ----------------------------
--  revision 1.17
--  date: Fri Jul 15 17:54:46 1994;  author: giering
--  Name Change: Init_State => Task_Procedure_Access
--  Checked in from FSU by doh.
--  ----------------------------
--  revision 1.18
--  date: Wed Aug  3 14:56:14 1994;  author: giering
--  Activate_Task takes Activation_Chain_Access as a parameter to allow
--   direct modification of the accessed Activation_Chain variable
--  Checked in from FSU by doh.
--  ----------------------------
--  New changes after this line.  Each line starts with: "--  "