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) 2007-2008, 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
;
42 with System
.Win32
; use System
.Win32
;
44 package body Ada
.Execution_Time
is
52 Right
: Ada
.Real_Time
.Time_Span
) return CPU_Time
54 use type Ada
.Real_Time
.Time
;
56 return CPU_Time
(Ada
.Real_Time
.Time
(Left
) + Right
);
60 (Left
: Ada
.Real_Time
.Time_Span
;
61 Right
: CPU_Time
) return CPU_Time
63 use type Ada
.Real_Time
.Time
;
65 return CPU_Time
(Left
+ Ada
.Real_Time
.Time
(Right
));
74 Right
: Ada
.Real_Time
.Time_Span
) return CPU_Time
76 use type Ada
.Real_Time
.Time
;
78 return CPU_Time
(Ada
.Real_Time
.Time
(Left
) - Right
);
83 Right
: CPU_Time
) return Ada
.Real_Time
.Time_Span
85 use type Ada
.Real_Time
.Time
;
87 return (Ada
.Real_Time
.Time
(Left
) - Ada
.Real_Time
.Time
(Right
));
95 (T
: Ada
.Task_Identification
.Task_Id
:=
96 Ada
.Task_Identification
.Current_Task
) return CPU_Time
98 Hundreds_Nano_In_Sec
: constant Long_Long_Float := 1.0E7
;
100 function To_Time
is new Ada
.Unchecked_Conversion
101 (Duration, Ada
.Real_Time
.Time
);
103 function To_Task_Id
is new Ada
.Unchecked_Conversion
104 (Ada
.Task_Identification
.Task_Id
, System
.Tasking
.Task_Id
);
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;
113 if T
= Ada
.Task_Identification
.Null_Task_Id
then
119 (HANDLE
(Get_Thread_Id
(To_Task_Id
(T
))),
120 C_Time
'Access, E_Time
'Access, K_Time
'Access, U_Time
'Access);
122 if Res
= System
.Win32
.FALSE then
130 ((Long_Long_Float (K_Time
) / Hundreds_Nano_In_Sec
)
131 + (Long_Long_Float (U_Time
) / Hundreds_Nano_In_Sec
))));
140 SC
: out Ada
.Real_Time
.Seconds_Count
;
141 TS
: out Ada
.Real_Time
.Time_Span
)
143 use type Ada
.Real_Time
.Time
;
145 Ada
.Real_Time
.Split
(Ada
.Real_Time
.Time
(T
), SC
, TS
);
153 (SC
: Ada
.Real_Time
.Seconds_Count
;
154 TS
: Ada
.Real_Time
.Time_Span
:= Ada
.Real_Time
.Time_Span_Zero
)
158 return CPU_Time
(Ada
.Real_Time
.Time_Of
(SC
, TS
));
161 end Ada
.Execution_Time
;