| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT RUN-TIME COMPONENTS -- |
| -- -- |
| -- A D A . R E A L _ T I M E -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- $Revision$ |
| -- -- |
| -- Copyright (C) 1992-2001 Free Software Foundation, Inc. -- |
| -- -- |
| -- This specification is derived from the Ada Reference Manual for use with -- |
| -- GNAT. The copyright notice above, and the license provisions that follow -- |
| -- apply solely to the contents of the part following the private keyword. -- |
| -- -- |
| -- GNAT is free software; you can redistribute it and/or modify it under -- |
| -- terms of the GNU General Public License as published by the Free Soft- -- |
| -- ware Foundation; either version 2, or (at your option) any later ver- -- |
| -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- |
| -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- |
| -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- |
| -- for more details. You should have received a copy of the GNU General -- |
| -- Public License distributed with GNAT; see file COPYING. If not, write -- |
| -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- |
| -- MA 02111-1307, USA. -- |
| -- -- |
| -- As a special exception, if other files instantiate generics from this -- |
| -- unit, or you link this unit with other files to produce an executable, -- |
| -- this unit does not by itself cause the resulting executable to be -- |
| -- covered by the GNU General Public License. This exception does not -- |
| -- however invalidate any other reasons why the executable file might be -- |
| -- covered by the GNU Public License. -- |
| -- -- |
| -- GNAT was originally developed by the GNAT team at New York University. -- |
| -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| with System.Task_Primitives.Operations; |
| pragma Elaborate_All (System.Task_Primitives.Operations); |
| |
| package Ada.Real_Time is |
| |
| type Time is private; |
| Time_First : constant Time; |
| Time_Last : constant Time; |
| Time_Unit : constant := 10#1.0#E-9; |
| |
| type Time_Span is private; |
| Time_Span_First : constant Time_Span; |
| Time_Span_Last : constant Time_Span; |
| Time_Span_Zero : constant Time_Span; |
| Time_Span_Unit : constant Time_Span; |
| |
| Tick : constant Time_Span; |
| function Clock return Time; |
| |
| function "+" (Left : Time; Right : Time_Span) return Time; |
| function "+" (Left : Time_Span; Right : Time) return Time; |
| function "-" (Left : Time; Right : Time_Span) return Time; |
| function "-" (Left : Time; Right : Time) return Time_Span; |
| |
| function "<" (Left, Right : Time) return Boolean; |
| function "<=" (Left, Right : Time) return Boolean; |
| function ">" (Left, Right : Time) return Boolean; |
| function ">=" (Left, Right : Time) return Boolean; |
| |
| function "+" (Left, Right : Time_Span) return Time_Span; |
| function "-" (Left, Right : Time_Span) return Time_Span; |
| function "-" (Right : Time_Span) return Time_Span; |
| function "*" (Left : Time_Span; Right : Integer) return Time_Span; |
| function "*" (Left : Integer; Right : Time_Span) return Time_Span; |
| function "/" (Left, Right : Time_Span) return Integer; |
| function "/" (Left : Time_Span; Right : Integer) return Time_Span; |
| |
| function "abs" (Right : Time_Span) return Time_Span; |
| |
| function "<" (Left, Right : Time_Span) return Boolean; |
| function "<=" (Left, Right : Time_Span) return Boolean; |
| function ">" (Left, Right : Time_Span) return Boolean; |
| function ">=" (Left, Right : Time_Span) return Boolean; |
| |
| function To_Duration (TS : Time_Span) return Duration; |
| function To_Time_Span (D : Duration) return Time_Span; |
| |
| function Nanoseconds (NS : Integer) return Time_Span; |
| function Microseconds (US : Integer) return Time_Span; |
| function Milliseconds (MS : Integer) return Time_Span; |
| |
| -- Seconds_Count needs 64 bits, since Time has the full range of |
| -- Duration. The delta of Duration is 10 ** (-9), so the maximum |
| -- number of seconds is 2**63/10**9 = 8*10**9 which does not quite |
| -- fit in 32 bits. |
| |
| type Seconds_Count is range -2 ** 63 .. 2 ** 63 - 1; |
| |
| procedure Split (T : Time; SC : out Seconds_Count; TS : out Time_Span); |
| function Time_Of (SC : Seconds_Count; TS : Time_Span) return Time; |
| |
| private |
| type Time is new Duration; |
| |
| Time_First : constant Time := Time'First; |
| |
| Time_Last : constant Time := Time'Last; |
| |
| type Time_Span is new Duration; |
| |
| Time_Span_First : constant Time_Span := Time_Span'First; |
| |
| Time_Span_Last : constant Time_Span := Time_Span'Last; |
| |
| Time_Span_Zero : constant Time_Span := 0.0; |
| |
| Time_Span_Unit : constant Time_Span := 10#1.0#E-9; |
| |
| Tick : constant Time_Span := |
| Time_Span (System.Task_Primitives.Operations.RT_Resolution); |
| |
| -- Time and Time_Span are represented in 64-bit Duration value in |
| -- in nanoseconds. For example, 1 second and 1 nanosecond is |
| -- represented as the stored integer 1_000_000_001. |
| |
| pragma Import (Intrinsic, "<"); |
| pragma Import (Intrinsic, "<="); |
| pragma Import (Intrinsic, ">"); |
| pragma Import (Intrinsic, ">="); |
| pragma Import (Intrinsic, "abs"); |
| |
| end Ada.Real_Time; |
