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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) 2009-2011, 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.      --

------------------------------------------------------------------------------

--  This is the Windows native version of this package

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 := 0.000001;

   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;