gcc/ada/a-exetim-mingw.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 -- This specification is derived from the Ada Reference Manual for use with --
  10 -- GNAT. The copyright notice above, and the license provisions that follow --
  11 -- apply solely to the  contents of the part following the private keyword. --
  12 --                                                                          --
  13 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  14 -- terms of the  GNU General Public License as published  by the Free Soft- --
  15 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  16 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  17 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  18 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  19 -- for  more details.  You should have  received  a copy of the GNU General --
  20 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  21 -- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
  22 -- Boston, MA 02110-1301, USA.                                              --
  23 --                                                                          --
  24 -- As a special exception,  if other files  instantiate  generics from this --
  25 -- unit, or you link  this unit with other files  to produce an executable, --
  26 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  27 -- covered  by the  GNU  General  Public  License.  This exception does not --
  28 -- however invalidate  any other reasons why  the executable file  might be --
  29 -- covered by the  GNU Public License.                                      --
  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 --  This is the Windows native version of this package
  36
  37 with Ada.Task_Identification;
  38 with Ada.Real_Time;
  39
  40 package Ada.Execution_Time is
  41
  42    type CPU_Time is private;
  43
  44    CPU_Time_First : constant CPU_Time;
  45    CPU_Time_Last  : constant CPU_Time;
  46    CPU_Time_Unit  : constant := 0.000001;
  47    CPU_Tick       : constant Ada.Real_Time.Time_Span;
  48
  49    function Clock
  50      (T : Ada.Task_Identification.Task_Id :=
  51             Ada.Task_Identification.Current_Task) return CPU_Time;
  52
  53    function "+"
  54      (Left  : CPU_Time;
  55       Right : Ada.Real_Time.Time_Span) return CPU_Time;
  56
  57    function "+"
  58      (Left  : Ada.Real_Time.Time_Span;
  59       Right : CPU_Time) return CPU_Time;
  60
  61    function "-"
  62      (Left  : CPU_Time;
  63       Right : Ada.Real_Time.Time_Span) return CPU_Time;
  64
  65    function "-"
  66      (Left  : CPU_Time;
  67       Right : CPU_Time) return Ada.Real_Time.Time_Span;
  68
  69    function "<"  (Left, Right : CPU_Time) return Boolean;
  70    function "<=" (Left, Right : CPU_Time) return Boolean;
  71    function ">"  (Left, Right : CPU_Time) return Boolean;
  72    function ">=" (Left, Right : CPU_Time) return Boolean;
  73
  74    procedure Split
  75      (T  : CPU_Time;
  76       SC : out Ada.Real_Time.Seconds_Count;
  77       TS : out Ada.Real_Time.Time_Span);
  78
  79    function Time_Of
  80       (SC : Ada.Real_Time.Seconds_Count;
  81        TS : Ada.Real_Time.Time_Span := Ada.Real_Time.Time_Span_Zero)
  82        return CPU_Time;
  83
  84 private
  85
  86    type CPU_Time is new Ada.Real_Time.Time;
  87
  88    CPU_Time_First : constant CPU_Time  := CPU_Time (Ada.Real_Time.Time_First);
  89    CPU_Time_Last  : constant CPU_Time  := CPU_Time (Ada.Real_Time.Time_Last);
  90
  91    CPU_Tick : constant Ada.Real_Time.Time_Span := Ada.Real_Time.Tick;
  92
  93    pragma Import (Intrinsic, "<");
  94    pragma Import (Intrinsic, "<=");
  95    pragma Import (Intrinsic, ">");
  96    pragma Import (Intrinsic, ">=");
  97
  98 end Ada.Execution_Time;