gcc/ada/a-exetim-default.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 --          Copyright (C) 2007-2011, Free Software Foundation, Inc.         --
  10 --                                                                          --
  11 -- This specification is derived from the Ada Reference Manual for use with --
  12 -- GNAT. The copyright notice above, and the license provisions that follow --
  13 -- apply solely to the  contents of the part following the private keyword. --
  14 --                                                                          --
  15 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  16 -- terms of the  GNU General Public License as published  by the Free Soft- --
  17 -- ware  Foundation;  either version 3,  or (at your option) any later ver- --
  18 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  19 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  20 -- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
  21 --                                                                          --
  22 -- As a special exception under Section 7 of GPL version 3, you are granted --
  23 -- additional permissions described in the GCC Runtime Library Exception,   --
  24 -- version 3.1, as published by the Free Software Foundation.               --
  25 --                                                                          --
  26 -- You should have received a copy of the GNU General Public License and    --
  27 -- a copy of the GCC Runtime Library Exception along with this program;     --
  28 -- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
  29 -- <http://www.gnu.org/licenses/>.                                          --
  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
  36 with Ada.Task_Identification;
  37 with Ada.Real_Time;
  38
  39 package Ada.Execution_Time is
  40
  41    type CPU_Time is private;
  42
  43    CPU_Time_First : constant CPU_Time;
  44    CPU_Time_Last  : constant CPU_Time;
  45    CPU_Time_Unit  : constant := Ada.Real_Time.Time_Unit;
  46    CPU_Tick       : constant Ada.Real_Time.Time_Span;
  47
  48    function Clock
  49      (T : Ada.Task_Identification.Task_Id
  50           := Ada.Task_Identification.Current_Task)
  51       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    Interrupt_Clocks_Supported          : constant Boolean := False;
  85    Separate_Interrupt_Clocks_Supported : constant Boolean := False;
  86
  87    function Clock_For_Interrupts return CPU_Time;
  88
  89 private
  90
  91    type CPU_Time is new Ada.Real_Time.Time;
  92
  93    CPU_Time_First : constant CPU_Time  := CPU_Time (Ada.Real_Time.Time_First);
  94    CPU_Time_Last  : constant CPU_Time  := CPU_Time (Ada.Real_Time.Time_Last);
  95
  96    CPU_Tick : constant Ada.Real_Time.Time_Span := Ada.Real_Time.Tick;
  97
  98    pragma Import (Intrinsic, "<");
  99    pragma Import (Intrinsic, "<=");
 100    pragma Import (Intrinsic, ">");
 101    pragma Import (Intrinsic, ">=");
 102
 103 end Ada.Execution_Time;