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+------------------------------------------------------------------------------
+-- --
+-- GNAT RUN-TIME COMPONENTS --
+-- --
+-- A D A . E X E C U T I O N _ T I M E --
+-- --
+-- S p e c --
+-- --
+-- Copyright (C) 2007-2011, 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.Task_Identification;
+with Ada.Real_Time;
+
+package Ada.Execution_Time is
+
+ type CPU_Time is private;
+
+ CPU_Time_First : constant CPU_Time;
+ CPU_Time_Last : constant CPU_Time;
+ CPU_Time_Unit : constant := Ada.Real_Time.Time_Unit;
+ CPU_Tick : constant Ada.Real_Time.Time_Span;
+
+ function Clock
+ (T : Ada.Task_Identification.Task_Id
+ := Ada.Task_Identification.Current_Task)
+ return CPU_Time;
+
+ function "+"
+ (Left : CPU_Time;
+ Right : Ada.Real_Time.Time_Span) return CPU_Time;
+
+ function "+"
+ (Left : Ada.Real_Time.Time_Span;
+ Right : CPU_Time) return CPU_Time;
+
+ function "-"
+ (Left : CPU_Time;
+ Right : Ada.Real_Time.Time_Span) return CPU_Time;
+
+ function "-"
+ (Left : CPU_Time;
+ Right : CPU_Time) return Ada.Real_Time.Time_Span;
+
+ function "<" (Left, Right : CPU_Time) return Boolean;
+ function "<=" (Left, Right : CPU_Time) return Boolean;
+ function ">" (Left, Right : CPU_Time) return Boolean;
+ function ">=" (Left, Right : CPU_Time) return Boolean;
+
+ procedure Split
+ (T : CPU_Time;
+ SC : out Ada.Real_Time.Seconds_Count;
+ TS : out Ada.Real_Time.Time_Span);
+
+ function Time_Of
+ (SC : Ada.Real_Time.Seconds_Count;
+ TS : Ada.Real_Time.Time_Span := Ada.Real_Time.Time_Span_Zero)
+ return CPU_Time;
+
+ Interrupt_Clocks_Supported : constant Boolean := False;
+ Separate_Interrupt_Clocks_Supported : constant Boolean := False;
+
+ function Clock_For_Interrupts return CPU_Time;
+
+private
+
+ type CPU_Time is new Ada.Real_Time.Time;
+
+ CPU_Time_First : constant CPU_Time := CPU_Time (Ada.Real_Time.Time_First);
+ CPU_Time_Last : constant CPU_Time := CPU_Time (Ada.Real_Time.Time_Last);
+
+ CPU_Tick : constant Ada.Real_Time.Time_Span := Ada.Real_Time.Tick;
+
+ pragma Import (Intrinsic, "<");
+ pragma Import (Intrinsic, "<=");
+ pragma Import (Intrinsic, ">");
+ pragma Import (Intrinsic, ">=");
+
+end Ada.Execution_Time;