1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME COMPONENTS --
5 -- A D A . E X E C U T I O N _ T I M E --
9 -- Copyright (C) 2007, Free Software Foundation, Inc. --
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 2, 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. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING. If not, write --
19 -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
20 -- Boston, MA 02110-1301, USA. --
22 -- As a special exception, if other files instantiate generics from this --
23 -- unit, or you link this unit with other files to produce an executable, --
24 -- this unit does not by itself cause the resulting executable to be --
25 -- covered by the GNU General Public License. This exception does not --
26 -- however invalidate any other reasons why the executable file might be --
27 -- covered by the GNU Public License. --
29 -- GNAT was originally developed by the GNAT team at New York University. --
30 -- Extensive contributions were provided by Ada Core Technologies Inc. --
32 ------------------------------------------------------------------------------
34 -- This is the Windows native version of this package
36 with Ada.Task_Identification; use Ada.Task_Identification;
37 with Ada.Unchecked_Conversion;
39 with System.OS_Interface; use System.OS_Interface;
40 with System.Task_Primitives.Operations; use System.Task_Primitives.Operations;
41 with System.Tasking; use System.Tasking;
43 package body Ada.Execution_Time is
51 Right : Ada.Real_Time.Time_Span) return CPU_Time
53 use type Ada.Real_Time.Time;
55 return CPU_Time (Ada.Real_Time.Time (Left) + Right);
59 (Left : Ada.Real_Time.Time_Span;
60 Right : CPU_Time) return CPU_Time
62 use type Ada.Real_Time.Time;
64 return CPU_Time (Left + Ada.Real_Time.Time (Right));
73 Right : Ada.Real_Time.Time_Span) return CPU_Time
75 use type Ada.Real_Time.Time;
77 return CPU_Time (Ada.Real_Time.Time (Left) - Right);
82 Right : CPU_Time) return Ada.Real_Time.Time_Span
84 use type Ada.Real_Time.Time;
86 return (Ada.Real_Time.Time (Left) - Ada.Real_Time.Time (Right));
94 (T : Ada.Task_Identification.Task_Id :=
95 Ada.Task_Identification.Current_Task) return CPU_Time
97 Hundreds_Nano_In_Sec : constant Long_Long_Float := 1.0E7;
99 function To_Time is new Ada.Unchecked_Conversion
100 (Duration, Ada.Real_Time.Time);
102 function To_Task_Id is new Ada.Unchecked_Conversion
103 (Ada.Task_Identification.Task_Id, System.Tasking.Task_Id);
105 C_Time : aliased Long_Long_Integer;
106 E_Time : aliased Long_Long_Integer;
107 K_Time : aliased Long_Long_Integer;
108 U_Time : aliased Long_Long_Integer;
112 if T = Ada.Task_Identification.Null_Task_Id then
118 (HANDLE (Get_Thread_Id (To_Task_Id (T))),
119 C_Time'Access, E_Time'Access, K_Time'Access, U_Time'Access);
129 ((Long_Long_Float (K_Time) / Hundreds_Nano_In_Sec)
130 + (Long_Long_Float (U_Time) / Hundreds_Nano_In_Sec))));
139 SC : out Ada.Real_Time.Seconds_Count;
140 TS : out Ada.Real_Time.Time_Span)
142 use type Ada.Real_Time.Time;
144 Ada.Real_Time.Split (Ada.Real_Time.Time (T), SC, TS);
152 (SC : Ada.Real_Time.Seconds_Count;
153 TS : Ada.Real_Time.Time_Span := Ada.Real_Time.Time_Span_Zero)
157 return CPU_Time (Ada.Real_Time.Time_Of (SC, TS));
160 end Ada.Execution_Time;