1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT RUN-TIME COMPONENTS                         --
4--                                                                          --
5--                   A D A . E X E C U T I O N _ T I M E                    --
6--                                                                          --
7--                                 S p e c                                  --
8--                                                                          --
9--          Copyright (C) 2009-2012, Free Software Foundation, Inc.         --
10--                                                                          --
11-- This specification is derived from the Ada Reference Manual for use with --
12-- GNAT. The copyright notice above, and the license provisions that follow --
13-- apply solely to the  contents of the part following the private keyword. --
14--                                                                          --
15-- GNAT is free software;  you can  redistribute it  and/or modify it under --
16-- terms of the  GNU General Public License as published  by the Free Soft- --
17-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
18-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
19-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
20-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
21--                                                                          --
22-- As a special exception under Section 7 of GPL version 3, you are granted --
23-- additional permissions described in the GCC Runtime Library Exception,   --
24-- version 3.1, as published by the Free Software Foundation.               --
25--                                                                          --
26-- You should have received a copy of the GNU General Public License and    --
27-- a copy of the GCC Runtime Library Exception along with this program;     --
28-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
29-- <http://www.gnu.org/licenses/>.                                          --
30--                                                                          --
31-- GNAT was originally developed  by the GNAT team at  New York University. --
32-- Extensive contributions were provided by Ada Core Technologies Inc.      --
33------------------------------------------------------------------------------
34
35--  This is the Windows native version of this package
36
37with Ada.Task_Identification;
38with Ada.Real_Time;
39
40package Ada.Execution_Time is
41
42   type CPU_Time is private;
43
44   CPU_Time_First : constant CPU_Time;
45   CPU_Time_Last  : constant CPU_Time;
46   CPU_Time_Unit  : constant := 0.000001;
47   CPU_Tick       : constant Ada.Real_Time.Time_Span;
48
49   function Clock
50     (T : Ada.Task_Identification.Task_Id :=
51            Ada.Task_Identification.Current_Task) return CPU_Time;
52
53   function "+"
54     (Left  : CPU_Time;
55      Right : Ada.Real_Time.Time_Span) return CPU_Time;
56
57   function "+"
58     (Left  : Ada.Real_Time.Time_Span;
59      Right : CPU_Time) return CPU_Time;
60
61   function "-"
62     (Left  : CPU_Time;
63      Right : Ada.Real_Time.Time_Span) return CPU_Time;
64
65   function "-"
66     (Left  : CPU_Time;
67      Right : CPU_Time) return Ada.Real_Time.Time_Span;
68
69   function "<"  (Left, Right : CPU_Time) return Boolean;
70   function "<=" (Left, Right : CPU_Time) return Boolean;
71   function ">"  (Left, Right : CPU_Time) return Boolean;
72   function ">=" (Left, Right : CPU_Time) return Boolean;
73
74   procedure Split
75     (T  : CPU_Time;
76      SC : out Ada.Real_Time.Seconds_Count;
77      TS : out Ada.Real_Time.Time_Span);
78
79   function Time_Of
80      (SC : Ada.Real_Time.Seconds_Count;
81       TS : Ada.Real_Time.Time_Span := Ada.Real_Time.Time_Span_Zero)
82       return CPU_Time;
83
84   Interrupt_Clocks_Supported          : constant Boolean := False;
85   Separate_Interrupt_Clocks_Supported : constant Boolean := False;
86
87   function Clock_For_Interrupts return CPU_Time;
88
89private
90
91   type CPU_Time is new Ada.Real_Time.Time;
92
93   CPU_Time_First : constant CPU_Time  := CPU_Time (Ada.Real_Time.Time_First);
94   CPU_Time_Last  : constant CPU_Time  := CPU_Time (Ada.Real_Time.Time_Last);
95
96   CPU_Tick : constant Ada.Real_Time.Time_Span := Ada.Real_Time.Tick;
97
98   pragma Import (Intrinsic, "<");
99   pragma Import (Intrinsic, "<=");
100   pragma Import (Intrinsic, ">");
101   pragma Import (Intrinsic, ">=");
102
103end Ada.Execution_Time;
104