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Diffstat (limited to 'gcc/ada/a-reatim.ads')
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diff --git a/gcc/ada/a-reatim.ads b/gcc/ada/a-reatim.ads new file mode 100644 index 00000000000..9fe47621998 --- /dev/null +++ b/gcc/ada/a-reatim.ads @@ -0,0 +1,126 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME COMPONENTS -- +-- -- +-- A D A . R E A L _ T I M E -- +-- -- +-- S p e c -- +-- -- +-- $Revision: 1.24 $ -- +-- -- +-- Copyright (C) 1992-1998 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; + + type Seconds_Count is new Integer range -Integer'Last .. Integer'Last; + + 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; |