Mercurial > hg > CbC > CbC_gcc
comparison gcc/ada/libgnarl/a-exetim.ads @ 111:04ced10e8804
gcc 7
author | kono |
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date | Fri, 27 Oct 2017 22:46:09 +0900 |
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68:561a7518be6b | 111:04ced10e8804 |
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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 -- This specification is derived from the Ada Reference Manual for use with -- | |
10 -- GNAT. In accordance with the copyright of that document, you can freely -- | |
11 -- copy and modify this specification, provided that if you redistribute a -- | |
12 -- modified version, any changes that you have made are clearly indicated. -- | |
13 -- -- | |
14 ------------------------------------------------------------------------------ | |
15 | |
16 -- This unit is not implemented in typical GNAT implementations that lie on | |
17 -- top of operating systems, because it is infeasible to implement in such | |
18 -- environments. | |
19 | |
20 -- If a target environment provides appropriate support for this package | |
21 -- then the Unimplemented_Unit pragma should be removed from this spec and | |
22 -- an appropriate body provided. | |
23 | |
24 with Ada.Task_Identification; | |
25 with Ada.Real_Time; | |
26 | |
27 package Ada.Execution_Time with | |
28 SPARK_Mode | |
29 is | |
30 pragma Preelaborate; | |
31 | |
32 pragma Unimplemented_Unit; | |
33 | |
34 type CPU_Time is private; | |
35 | |
36 CPU_Time_First : constant CPU_Time; | |
37 CPU_Time_Last : constant CPU_Time; | |
38 CPU_Time_Unit : constant := 0.000001; | |
39 CPU_Tick : constant Ada.Real_Time.Time_Span; | |
40 | |
41 use type Ada.Task_Identification.Task_Id; | |
42 | |
43 function Clock | |
44 (T : Ada.Task_Identification.Task_Id := | |
45 Ada.Task_Identification.Current_Task) | |
46 return CPU_Time | |
47 with | |
48 Volatile_Function, | |
49 Global => Ada.Real_Time.Clock_Time, | |
50 Pre => T /= Ada.Task_Identification.Null_Task_Id; | |
51 | |
52 function "+" | |
53 (Left : CPU_Time; | |
54 Right : Ada.Real_Time.Time_Span) return CPU_Time | |
55 with | |
56 Global => null; | |
57 | |
58 function "+" | |
59 (Left : Ada.Real_Time.Time_Span; | |
60 Right : CPU_Time) return CPU_Time | |
61 with | |
62 Global => null; | |
63 | |
64 function "-" | |
65 (Left : CPU_Time; | |
66 Right : Ada.Real_Time.Time_Span) return CPU_Time | |
67 with | |
68 Global => null; | |
69 | |
70 function "-" | |
71 (Left : CPU_Time; | |
72 Right : CPU_Time) return Ada.Real_Time.Time_Span | |
73 with | |
74 Global => null; | |
75 | |
76 function "<" (Left, Right : CPU_Time) return Boolean with | |
77 Global => null; | |
78 function "<=" (Left, Right : CPU_Time) return Boolean with | |
79 Global => null; | |
80 function ">" (Left, Right : CPU_Time) return Boolean with | |
81 Global => null; | |
82 function ">=" (Left, Right : CPU_Time) return Boolean with | |
83 Global => null; | |
84 | |
85 procedure Split | |
86 (T : CPU_Time; | |
87 SC : out Ada.Real_Time.Seconds_Count; | |
88 TS : out Ada.Real_Time.Time_Span) | |
89 with | |
90 Global => null; | |
91 | |
92 function Time_Of | |
93 (SC : Ada.Real_Time.Seconds_Count; | |
94 TS : Ada.Real_Time.Time_Span := Ada.Real_Time.Time_Span_Zero) | |
95 return CPU_Time | |
96 with | |
97 Global => null; | |
98 | |
99 Interrupt_Clocks_Supported : constant Boolean := False; | |
100 Separate_Interrupt_Clocks_Supported : constant Boolean := False; | |
101 | |
102 pragma Warnings (Off, "check will fail at run time"); | |
103 function Clock_For_Interrupts return CPU_Time with | |
104 Volatile_Function, | |
105 Global => Ada.Real_Time.Clock_Time, | |
106 Pre => Interrupt_Clocks_Supported; | |
107 pragma Warnings (On, "check will fail at run time"); | |
108 | |
109 private | |
110 pragma SPARK_Mode (Off); | |
111 | |
112 type CPU_Time is new Ada.Real_Time.Time; | |
113 | |
114 CPU_Time_First : constant CPU_Time := CPU_Time (Ada.Real_Time.Time_First); | |
115 CPU_Time_Last : constant CPU_Time := CPU_Time (Ada.Real_Time.Time_Last); | |
116 | |
117 CPU_Tick : constant Ada.Real_Time.Time_Span := Ada.Real_Time.Tick; | |
118 | |
119 end Ada.Execution_Time; |