File : a-exetim-default.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) 2007-2015, 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 with Ada.Task_Identification;
37 with Ada.Real_Time;
38
39 package Ada.Execution_Time with
40 SPARK_Mode
41 is
42
43 type CPU_Time is private;
44
45 CPU_Time_First : constant CPU_Time;
46 CPU_Time_Last : constant CPU_Time;
47 CPU_Time_Unit : constant := Ada.Real_Time.Time_Unit;
48 CPU_Tick : constant Ada.Real_Time.Time_Span;
49
50 use type Ada.Task_Identification.Task_Id;
51
52 function Clock
53 (T : Ada.Task_Identification.Task_Id :=
54 Ada.Task_Identification.Current_Task)
55 return CPU_Time
56 with
57 Volatile_Function,
58 Global => Ada.Real_Time.Clock_Time,
59 Pre => T /= Ada.Task_Identification.Null_Task_Id;
60
61 function "+"
62 (Left : CPU_Time;
63 Right : Ada.Real_Time.Time_Span) return CPU_Time
64 with
65 Global => null;
66
67 function "+"
68 (Left : Ada.Real_Time.Time_Span;
69 Right : CPU_Time) return CPU_Time
70 with
71 Global => null;
72
73 function "-"
74 (Left : CPU_Time;
75 Right : Ada.Real_Time.Time_Span) return CPU_Time
76 with
77 Global => null;
78
79 function "-"
80 (Left : CPU_Time;
81 Right : CPU_Time) return Ada.Real_Time.Time_Span
82 with
83 Global => null;
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
118 private
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
133 end Ada.Execution_Time;