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+------------------------------------------------------------------------------
+-- --
+-- GNAT RUN-TIME COMPONENTS --
+-- --
+-- A D A . R E A L _ T I M E . T I M I N G _ E V E N T S --
+-- --
+-- S p e c --
+-- --
+-- Copyright (C) 2005-2009, Free Software Foundation, Inc. --
+-- --
+-- This specification is derived from the Ada Reference Manual for use with --
+-- GNAT. The copyright notice above, and the license provisions that follow --
+-- apply solely to the contents of the part following the private keyword. --
+-- --
+-- GNAT 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/>. --
+-- --
+-- GNAT was originally developed by the GNAT team at New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc. --
+-- --
+------------------------------------------------------------------------------
+
+with Ada.Finalization;
+
+package Ada.Real_Time.Timing_Events is
+
+ type Timing_Event is tagged limited private;
+
+ type Timing_Event_Handler
+ is access protected procedure (Event : in out Timing_Event);
+
+ procedure Set_Handler
+ (Event : in out Timing_Event;
+ At_Time : Time;
+ Handler : Timing_Event_Handler);
+
+ procedure Set_Handler
+ (Event : in out Timing_Event;
+ In_Time : Time_Span;
+ Handler : Timing_Event_Handler);
+
+ function Current_Handler
+ (Event : Timing_Event) return Timing_Event_Handler;
+
+ procedure Cancel_Handler
+ (Event : in out Timing_Event;
+ Cancelled : out Boolean);
+
+ function Time_Of_Event (Event : Timing_Event) return Time;
+
+private
+
+ type Timing_Event is new Ada.Finalization.Limited_Controlled with record
+ Timeout : Time := Time_First;
+ -- The time at which the user's handler should be invoked when the
+ -- event is "set" (i.e., when Handler is not null).
+
+ Handler : Timing_Event_Handler;
+ -- An access value designating the protected procedure to be invoked
+ -- at the Timeout time in the future. When this value is null the event
+ -- is said to be "cleared" and no timeout is processed.
+ end record;
+
+ overriding procedure Finalize (This : in out Timing_Event);
+ -- Finalization procedure is required to satisfy (RM D.15 (19/2)), which
+ -- says that the object must be cleared on finalization.
+
+end Ada.Real_Time.Timing_Events;