------------------------------------------------------------------------------ -- -- -- GNAT RUN-TIME COMPONENTS -- -- -- -- A D A . R E A L _ T I M E -- -- -- -- S p e c -- -- -- -- Copyright (C) 1992-2002 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. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ 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;