New Language: Ada

[pf3gnuchains/gcc-fork.git] / gcc / ada / a-astaco.ads

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+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT RUNTIME 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                                  --
+--                                                                          --
+--                            $Revision: 1.9 $                              --
+--                                                                          --
+-- This specification is adapted 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 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;