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   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUN-TIME COMPONENTS                         --
   4 --                                                                          --
   5 --        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         --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 -- This specification is adapted from the Ada Reference Manual for use with --
  10 -- GNAT.  In accordance with the copyright of that document, you can freely --
  11 -- copy and modify this specification,  provided that if you redistribute a --
  12 -- modified version,  any changes that you have made are clearly indicated. --
  13 --                                                                          --
  14 ------------------------------------------------------------------------------
  15
  16 --  This unit is not implemented in typical GNAT implementations that lie on
  17 --  top of operating systems, because it is infeasible to implement in such
  18 --  environments. The RM anticipates this situation (RM D.11(10)), and permits
  19 --  an implementation to leave this unimplemented even if the Real-Time Systems
  20 --  annex is fully supported.
  21
  22 --  If a target environment provides appropriate support for this package, then
  23 --  the Unimplemented_Unit pragma should be removed from this spec, and an
  24 --  appropriate body provided. The framework for such a body is included in the
  25 --  distributed sources.
  26
  27 with Ada.Task_Identification;
  28
  29 package Ada.Asynchronous_Task_Control is
  30    pragma Preelaborate_05;
  31    --  In accordance with Ada 2005 AI-362
  32
  33    pragma Unimplemented_Unit;
  34
  35    procedure Hold (T : Ada.Task_Identification.Task_Id);
  36
  37    procedure Continue (T : Ada.Task_Identification.Task_Id);
  38
  39    function Is_Held (T : Ada.Task_Identification.Task_Id) return Boolean;
  40
  41 end Ada.Asynchronous_Task_Control;