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------------------------------------------------------------------------------

--                                                                          --

--                         GNAT RUN-TIME COMPONENTS                         --

--                                                                          --

--                SYSTEM.MULTIPROCESSORS.DISPATCHING_DOMAINS                --

--                                                                          --

--                                  B o d y                                 --

--                                                                          --

--            Copyright (C) 2011, Free Software Foundation, Inc.            --

--                                                                          --

-- GNARL 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 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.                                     --

--                                                                          --

-- 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/>.                                          --

--                                                                          --

-- GNARL was developed by the GNARL team at Florida State University.       --

-- Extensive contributions were provided by Ada Core Technologies, Inc.     --

--                                                                          --

------------------------------------------------------------------------------

--  Body used on unimplemented targets, where the operating system does not

--  support setting task affinities.

package body System.Multiprocessors.Dispatching_Domains is

   -----------------------

   -- Local subprograms --

   -----------------------

   procedure Freeze_Dispatching_Domains;

   pragma Export

     (Ada, Freeze_Dispatching_Domains, "__gnat_freeze_dispatching_domains");

   --  Signal the time when no new dispatching domains can be created. It

   --  should be called before the environment task calls the main procedure

   --  (and after the elaboration code), so the binder-generated file needs to

   --  import and call this procedure.

   -----------------

   -- Assign_Task --

   -----------------

   procedure Assign_Task

     (Domain : in out Dispatching_Domain;

      CPU    : CPU_Range := Not_A_Specific_CPU;

      T      : Ada.Task_Identification.Task_Id :=

                 Ada.Task_Identification.Current_Task)

   is

      pragma Unreferenced (Domain, CPU, T);

   begin

      raise Dispatching_Domain_Error with "dispatching domains not supported";

   end Assign_Task;

   ------------

   -- Create --

   ------------

   function Create (First, Last : CPU) return Dispatching_Domain is

      pragma Unreferenced (First, Last);

   begin

      raise Dispatching_Domain_Error with "dispatching domains not supported";

      return System_Dispatching_Domain;

   end Create;

   -----------------------------

   -- Delay_Until_And_Set_CPU --

   -----------------------------

   procedure Delay_Until_And_Set_CPU

     (Delay_Until_Time : Ada.Real_Time.Time;

      CPU              : CPU_Range)

   is

      pragma Unreferenced (Delay_Until_Time, CPU);

   begin

      raise Dispatching_Domain_Error with "dispatching domains not supported";

   end Delay_Until_And_Set_CPU;

   --------------------------------

   -- Freeze_Dispatching_Domains --

   --------------------------------

   procedure Freeze_Dispatching_Domains is

   begin

      null;

   end Freeze_Dispatching_Domains;

   -------------

   -- Get_CPU --

   -------------

   function Get_CPU

     (T : Ada.Task_Identification.Task_Id :=

            Ada.Task_Identification.Current_Task) return CPU_Range

   is

      pragma Unreferenced (T);

   begin

      return Not_A_Specific_CPU;

   end Get_CPU;

   ----------------------------

   -- Get_Dispatching_Domain --

   ----------------------------

   function Get_Dispatching_Domain

     (T : Ada.Task_Identification.Task_Id :=

            Ada.Task_Identification.Current_Task) return Dispatching_Domain

   is

      pragma Unreferenced (T);

   begin

      return System_Dispatching_Domain;

   end Get_Dispatching_Domain;

   -------------------

   -- Get_First_CPU --

   -------------------

   function Get_First_CPU (Domain : Dispatching_Domain) return CPU is

      pragma Unreferenced (Domain);

   begin

      return CPU'First;

   end Get_First_CPU;

   ------------------

   -- Get_Last_CPU --

   ------------------

   function Get_Last_CPU (Domain : Dispatching_Domain) return CPU is

      pragma Unreferenced (Domain);

   begin

      return Number_Of_CPUs;

   end Get_Last_CPU;

   -------------

   -- Set_CPU --

   -------------

   procedure Set_CPU

     (CPU : CPU_Range;

      T   : Ada.Task_Identification.Task_Id :=

              Ada.Task_Identification.Current_Task)

   is

      pragma Unreferenced (CPU, T);

   begin

      raise Dispatching_Domain_Error with "dispatching domains not supported";

   end Set_CPU;

end System.Multiprocessors.Dispatching_Domains;