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) 2009-2015, 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
36--  This is the Windows native version of this package
37
38with Ada.Task_Identification;
39with Ada.Real_Time;
40
41package Ada.Execution_Time with
42  SPARK_Mode
43is
44
45   type CPU_Time is private;
46
47   CPU_Time_First : constant CPU_Time;
48   CPU_Time_Last  : constant CPU_Time;
49   CPU_Time_Unit  : constant := 0.000001;
50   CPU_Tick       : constant Ada.Real_Time.Time_Span;
51
52   use type Ada.Task_Identification.Task_Id;
53
54   function Clock
55     (T : Ada.Task_Identification.Task_Id :=
56        Ada.Task_Identification.Current_Task)
57      return CPU_Time
58   with
59     Volatile_Function,
60     Global => Ada.Real_Time.Clock_Time,
61     Pre    => T /= Ada.Task_Identification.Null_Task_Id;
62
63   function "+"
64     (Left  : CPU_Time;
65      Right : Ada.Real_Time.Time_Span) return CPU_Time
66   with
67     Global => null;
68
69   function "+"
70     (Left  : Ada.Real_Time.Time_Span;
71      Right : CPU_Time) return CPU_Time
72   with
73     Global => null;
74
75   function "-"
76     (Left  : CPU_Time;
77      Right : Ada.Real_Time.Time_Span) return CPU_Time
78   with
79     Global => null;
80
81   function "-"
82     (Left  : CPU_Time;
83      Right : CPU_Time) return Ada.Real_Time.Time_Span;
84
85   function "<"  (Left, Right : CPU_Time) return Boolean with
86     Global => null;
87   function "<=" (Left, Right : CPU_Time) return Boolean with
88     Global => null;
89   function ">"  (Left, Right : CPU_Time) return Boolean with
90     Global => null;
91   function ">=" (Left, Right : CPU_Time) return Boolean with
92     Global => null;
93
94   procedure Split
95     (T  : CPU_Time;
96      SC : out Ada.Real_Time.Seconds_Count;
97      TS : out Ada.Real_Time.Time_Span)
98   with
99     Global => null;
100
101   function Time_Of
102     (SC : Ada.Real_Time.Seconds_Count;
103      TS : Ada.Real_Time.Time_Span := Ada.Real_Time.Time_Span_Zero)
104      return CPU_Time
105   with
106     Global => null;
107
108   Interrupt_Clocks_Supported          : constant Boolean := False;
109   Separate_Interrupt_Clocks_Supported : constant Boolean := False;
110
111   pragma Warnings (Off, "check will fail at run time");
112   function Clock_For_Interrupts return CPU_Time with
113     Volatile_Function,
114     Global => Ada.Real_Time.Clock_Time,
115     Pre    => Interrupt_Clocks_Supported;
116   pragma Warnings (On, "check will fail at run time");
117
118private
119   pragma SPARK_Mode (Off);
120
121   type CPU_Time is new Ada.Real_Time.Time;
122
123   CPU_Time_First : constant CPU_Time  := CPU_Time (Ada.Real_Time.Time_First);
124   CPU_Time_Last  : constant CPU_Time  := CPU_Time (Ada.Real_Time.Time_Last);
125
126   CPU_Tick : constant Ada.Real_Time.Time_Span := Ada.Real_Time.Tick;
127
128   pragma Import (Intrinsic, "<");
129   pragma Import (Intrinsic, "<=");
130   pragma Import (Intrinsic, ">");
131   pragma Import (Intrinsic, ">=");
132
133end Ada.Execution_Time;
134