------------------------------------------------------------------------------
--                                                                          --
--                         GNAT RUN-TIME COMPONENTS                         --
--                                                                          --
--        A D A . A S Y N C H R O N O U S _ T A S K _ C O N T R O L         --
--                                                                          --
--                                 S p e c                                  --
--                                                                          --
-- This specification is derived from the Ada Reference Manual for use with --
-- GNAT.  In accordance with the copyright of that document, you can freely --
-- copy and modify this specification,  provided that if you redistribute a --
-- modified version,  any changes that you have made are clearly indicated. --
--                                                                          --
------------------------------------------------------------------------------

--  This unit is not implemented in typical GNAT implementations that lie on
--  top of operating systems, because it is infeasible to implement in such
--  environments. The RM anticipates this situation (RM D.11(10)), and permits
--  an implementation to leave this unimplemented even if the Real-Time Systems
--  annex is fully supported.

--  If a target environment provides appropriate support for this package, then
--  the Unimplemented_Unit pragma should be removed from this spec, and an
--  appropriate body provided. The framework for such a body is included in the
--  distributed sources.

with Ada.Task_Identification;

package Ada.Asynchronous_Task_Control is
   pragma Preelaborate;
   --  In accordance with Ada 2005 AI-362

   pragma Unimplemented_Unit;

   procedure Hold (T : Ada.Task_Identification.Task_Id);

   procedure Continue (T : Ada.Task_Identification.Task_Id);

   function Is_Held (T : Ada.Task_Identification.Task_Id) return Boolean;

end Ada.Asynchronous_Task_Control;