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-------------------------------------------------------------------------------
--- --
--- GNAT RUN-TIME COMPONENTS --
--- --
--- A D A . R E A L _ T I M E --
--- --
--- S p e c --
--- --
--- Copyright (C) 1992-2009, 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 3, 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. --
--- --
--- As a special exception under Section 7 of GPL version 3, you are granted --
--- additional permissions described in the GCC Runtime Library Exception, --
--- version 3.1, as published by the Free Software Foundation. --
--- --
--- You should have received a copy of the GNU General Public License and --
--- a copy of the GCC Runtime Library Exception along with this program; --
--- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
--- <http://www.gnu.org/licenses/>. --
--- --
--- 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;
-
- function Seconds (S : Integer) return Time_Span;
- pragma Ada_05 (Seconds);
-
- function Minutes (M : Integer) return Time_Span;
- pragma Ada_05 (Minutes);
-
- -- 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");
-
- pragma Inline (Microseconds);
- pragma Inline (Milliseconds);
- pragma Inline (Nanoseconds);
- pragma Inline (Seconds);
- pragma Inline (Minutes);
-
-end Ada.Real_Time;