File : a-exetim-mingw.ads
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 -- --
23 -- --
24 -- --
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
38 with Ada.Task_Identification;
39 with Ada.Real_Time;
40
41 package Ada.Execution_Time with
42 SPARK_Mode
43 is
44 type CPU_Time is private;
45
46 CPU_Time_First : constant CPU_Time;
47 CPU_Time_Last : constant CPU_Time;
48 CPU_Time_Unit : constant := 0.000001;
49 CPU_Tick : constant Ada.Real_Time.Time_Span;
50
51 use type Ada.Task_Identification.Task_Id;
52
53 function Clock
54 (T : Ada.Task_Identification.Task_Id :=
55 Ada.Task_Identification.Current_Task)
56 return CPU_Time
57 with
58 Volatile_Function,
59 Global => Ada.Real_Time.Clock_Time,
60 Pre => T /= Ada.Task_Identification.Null_Task_Id;
61
62 function "+"
63 (Left : CPU_Time;
64 Right : Ada.Real_Time.Time_Span) return CPU_Time
65 with
66 Global => null;
67
68 function "+"
69 (Left : Ada.Real_Time.Time_Span;
70 Right : CPU_Time) return CPU_Time
71 with
72 Global => null;
73
74 function "-"
75 (Left : CPU_Time;
76 Right : Ada.Real_Time.Time_Span) return CPU_Time
77 with
78 Global => null;
79
80 function "-"
81 (Left : CPU_Time;
82 Right : CPU_Time) return Ada.Real_Time.Time_Span;
83
84 function "<" (Left, Right : CPU_Time) return Boolean with
85 Global => null;
86 function "<=" (Left, Right : CPU_Time) return Boolean with
87 Global => null;
88 function ">" (Left, Right : CPU_Time) return Boolean with
89 Global => null;
90 function ">=" (Left, Right : CPU_Time) return Boolean with
91 Global => null;
92
93 procedure Split
94 (T : CPU_Time;
95 SC : out Ada.Real_Time.Seconds_Count;
96 TS : out Ada.Real_Time.Time_Span)
97 with
98 Global => null;
99
100 function Time_Of
101 (SC : Ada.Real_Time.Seconds_Count;
102 TS : Ada.Real_Time.Time_Span := Ada.Real_Time.Time_Span_Zero)
103 return CPU_Time
104 with
105 Global => null;
106
107 Interrupt_Clocks_Supported : constant Boolean := False;
108 Separate_Interrupt_Clocks_Supported : constant Boolean := False;
109
110 pragma Warnings (Off, "check will fail at run time");
111 function Clock_For_Interrupts return CPU_Time with
112 Volatile_Function,
113 Global => Ada.Real_Time.Clock_Time,
114 Pre => Interrupt_Clocks_Supported;
115 pragma Warnings (On, "check will fail at run time");
116
117 private
118 pragma SPARK_Mode (Off);
119
120 type CPU_Time is new Ada.Real_Time.Time;
121
122 CPU_Time_First : constant CPU_Time := CPU_Time (Ada.Real_Time.Time_First);
123 CPU_Time_Last : constant CPU_Time := CPU_Time (Ada.Real_Time.Time_Last);
124
125 CPU_Tick : constant Ada.Real_Time.Time_Span := Ada.Real_Time.Tick;
126
127 pragma Import (Intrinsic, "<");
128 pragma Import (Intrinsic, "<=");
129 pragma Import (Intrinsic, ">");
130 pragma Import (Intrinsic, ">=");
131
132 end Ada.Execution_Time;