Mercurial > hg > CbC > CbC_gcc
comparison gcc/ada/libgnarl/a-exetim__mingw.adb @ 111:04ced10e8804
gcc 7
author | kono |
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date | Fri, 27 Oct 2017 22:46:09 +0900 |
parents | |
children | 84e7813d76e9 |
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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 -- B o d y -- | |
8 -- -- | |
9 -- Copyright (C) 2007-2017, Free Software Foundation, Inc. -- | |
10 -- -- | |
11 -- GNAT is free software; you can redistribute it and/or modify it under -- | |
12 -- terms of the GNU General Public License as published by the Free Soft- -- | |
13 -- ware Foundation; either version 3, or (at your option) any later ver- -- | |
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- | |
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- | |
16 -- or FITNESS FOR A PARTICULAR PURPOSE. -- | |
17 -- -- | |
18 -- As a special exception under Section 7 of GPL version 3, you are granted -- | |
19 -- additional permissions described in the GCC Runtime Library Exception, -- | |
20 -- version 3.1, as published by the Free Software Foundation. -- | |
21 -- -- | |
22 -- You should have received a copy of the GNU General Public License and -- | |
23 -- a copy of the GCC Runtime Library Exception along with this program; -- | |
24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- | |
25 -- <http://www.gnu.org/licenses/>. -- | |
26 -- -- | |
27 -- GNAT was originally developed by the GNAT team at New York University. -- | |
28 -- Extensive contributions were provided by Ada Core Technologies Inc. -- | |
29 -- -- | |
30 ------------------------------------------------------------------------------ | |
31 | |
32 -- This is the Windows native version of this package | |
33 | |
34 with Ada.Task_Identification; use Ada.Task_Identification; | |
35 with Ada.Unchecked_Conversion; | |
36 | |
37 with System.OS_Interface; use System.OS_Interface; | |
38 with System.Task_Primitives.Operations; use System.Task_Primitives.Operations; | |
39 with System.Tasking; use System.Tasking; | |
40 with System.Win32; use System.Win32; | |
41 | |
42 package body Ada.Execution_Time with | |
43 SPARK_Mode => Off | |
44 is | |
45 | |
46 --------- | |
47 -- "+" -- | |
48 --------- | |
49 | |
50 function "+" | |
51 (Left : CPU_Time; | |
52 Right : Ada.Real_Time.Time_Span) return CPU_Time | |
53 is | |
54 use type Ada.Real_Time.Time; | |
55 begin | |
56 return CPU_Time (Ada.Real_Time.Time (Left) + Right); | |
57 end "+"; | |
58 | |
59 function "+" | |
60 (Left : Ada.Real_Time.Time_Span; | |
61 Right : CPU_Time) return CPU_Time | |
62 is | |
63 use type Ada.Real_Time.Time; | |
64 begin | |
65 return CPU_Time (Left + Ada.Real_Time.Time (Right)); | |
66 end "+"; | |
67 | |
68 --------- | |
69 -- "-" -- | |
70 --------- | |
71 | |
72 function "-" | |
73 (Left : CPU_Time; | |
74 Right : Ada.Real_Time.Time_Span) return CPU_Time | |
75 is | |
76 use type Ada.Real_Time.Time; | |
77 begin | |
78 return CPU_Time (Ada.Real_Time.Time (Left) - Right); | |
79 end "-"; | |
80 | |
81 function "-" | |
82 (Left : CPU_Time; | |
83 Right : CPU_Time) return Ada.Real_Time.Time_Span | |
84 is | |
85 use type Ada.Real_Time.Time; | |
86 begin | |
87 return (Ada.Real_Time.Time (Left) - Ada.Real_Time.Time (Right)); | |
88 end "-"; | |
89 | |
90 ----------- | |
91 -- Clock -- | |
92 ----------- | |
93 | |
94 function Clock | |
95 (T : Ada.Task_Identification.Task_Id := | |
96 Ada.Task_Identification.Current_Task) return CPU_Time | |
97 is | |
98 Hundreds_Nano_In_Sec : constant Long_Long_Float := 1.0E7; | |
99 | |
100 function To_Time is new Ada.Unchecked_Conversion | |
101 (Duration, Ada.Real_Time.Time); | |
102 | |
103 function To_Task_Id is new Ada.Unchecked_Conversion | |
104 (Ada.Task_Identification.Task_Id, System.Tasking.Task_Id); | |
105 | |
106 C_Time : aliased Long_Long_Integer; | |
107 E_Time : aliased Long_Long_Integer; | |
108 K_Time : aliased Long_Long_Integer; | |
109 U_Time : aliased Long_Long_Integer; | |
110 Res : BOOL; | |
111 | |
112 begin | |
113 if T = Ada.Task_Identification.Null_Task_Id then | |
114 raise Program_Error; | |
115 end if; | |
116 | |
117 Res := | |
118 GetThreadTimes | |
119 (HANDLE (Get_Thread_Id (To_Task_Id (T))), | |
120 C_Time'Access, E_Time'Access, K_Time'Access, U_Time'Access); | |
121 | |
122 if Res = System.Win32.FALSE then | |
123 raise Program_Error; | |
124 end if; | |
125 | |
126 return | |
127 CPU_Time | |
128 (To_Time | |
129 (Duration | |
130 ((Long_Long_Float (K_Time) / Hundreds_Nano_In_Sec) | |
131 + (Long_Long_Float (U_Time) / Hundreds_Nano_In_Sec)))); | |
132 end Clock; | |
133 | |
134 -------------------------- | |
135 -- Clock_For_Interrupts -- | |
136 -------------------------- | |
137 | |
138 function Clock_For_Interrupts return CPU_Time is | |
139 begin | |
140 -- According to AI 0170-1, D.14(18.1/3), if Interrupt_Clocks_Supported | |
141 -- is set to False the function raises Program_Error. | |
142 | |
143 raise Program_Error; | |
144 return CPU_Time_First; | |
145 end Clock_For_Interrupts; | |
146 | |
147 ----------- | |
148 -- Split -- | |
149 ----------- | |
150 | |
151 procedure Split | |
152 (T : CPU_Time; | |
153 SC : out Ada.Real_Time.Seconds_Count; | |
154 TS : out Ada.Real_Time.Time_Span) | |
155 is | |
156 begin | |
157 Ada.Real_Time.Split (Ada.Real_Time.Time (T), SC, TS); | |
158 end Split; | |
159 | |
160 ------------- | |
161 -- Time_Of -- | |
162 ------------- | |
163 | |
164 function Time_Of | |
165 (SC : Ada.Real_Time.Seconds_Count; | |
166 TS : Ada.Real_Time.Time_Span := Ada.Real_Time.Time_Span_Zero) | |
167 return CPU_Time | |
168 is | |
169 begin | |
170 return CPU_Time (Ada.Real_Time.Time_Of (SC, TS)); | |
171 end Time_Of; | |
172 | |
173 end Ada.Execution_Time; |