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|
------------------------------------------------------------------------------
-- --
-- GNU ADA RUNTIME LIBRARY (GNARL) COMPONENTS --
-- --
-- A D A . R E A L _ T I M E --
-- --
-- B o d y --
-- (Version for new GNARL) --
-- --
-- $Revision: 1.25 $ --
-- --
-- Copyright (C) 1991-1997, Florida State University --
-- --
-- GNARL 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. GNARL 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 GNARL; 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. --
-- --
-- GNARL was developed by the GNARL team at Florida State University. It is --
-- now maintained by Ada Core Technologies Inc. in cooperation with Florida --
-- State University (http://www.gnat.com). --
-- --
------------------------------------------------------------------------------
with System.Task_Primitives.Operations;
-- used for Clock
package body Ada.Real_Time is
-----------
-- Clock --
-----------
function Clock return Time is
begin
return Time (System.Task_Primitives.Operations.Clock);
end Clock;
---------
-- "+" --
---------
-- Note that Constraint_Error may be propagated
function "+" (Left : Time; Right : Time_Span) return Time is
begin
return Time (Duration (Left) + Duration (Right));
end "+";
function "+" (Left : Time_Span; Right : Time) return Time is
begin
return Time (Duration (Left) + Duration (Right));
end "+";
function "+" (Left, Right : Time_Span) return Time_Span is
begin
return Time_Span (Duration (Left) + Duration (Right));
end "+";
---------
-- "-" --
---------
-- Note that Constraint_Error may be propagated
function "-" (Left : Time; Right : Time_Span) return Time is
begin
return Time (Duration (Left) - Duration (Right));
end "-";
function "-" (Left, Right : Time) return Time_Span is
begin
return Time_Span (Duration (Left) - Duration (Right));
end "-";
function "-" (Left, Right : Time_Span) return Time_Span is
begin
return Time_Span (Duration (Left) - Duration (Right));
end "-";
function "-" (Right : Time_Span) return Time_Span is
begin
return Time_Span_Zero - Right;
end "-";
---------
-- "/" --
---------
-- Note that Constraint_Error may be propagated
function "/" (Left, Right : Time_Span) return integer is
begin
return integer (Duration (Left) / Duration (Right));
end "/";
function "/" (Left : Time_Span; Right : Integer) return Time_Span is
begin
return Time_Span (Duration (Left) / Right);
end "/";
---------
-- "*" --
---------
-- Note that Constraint_Error may be propagated
function "*" (Left : Time_Span; Right : Integer) return Time_Span is
begin
return Time_Span (Duration (Left) * Right);
end "*";
function "*" (Left : Integer; Right : Time_Span) return Time_Span is
begin
return Time_Span (Left * Duration (Right));
end "*";
-----------
-- "abs" --
-----------
-- The body of "abs" has to be removed when the problem associated with
-- pragma Import (Intrinsic...) is resolved See the spec for more
-- comments ????
-- Note that Constraint_Error may be propagated
function "abs" (Right : Time_Span) return Time_Span is
begin
if Right < Time_Span_Zero then
return -Right;
end if;
return Right;
end "abs";
-----------------
-- To_Duration --
-----------------
function To_Duration (TS : Time_Span) return Duration is
begin
return Duration (TS);
end To_Duration;
------------------
-- To_Time_Span --
------------------
function To_Time_Span (D : Duration) return Time_Span is
begin
return Time_Span (D);
end To_Time_Span;
-----------------
-- Nanoseconds --
-----------------
function Nanoseconds (NS : integer) return Time_Span is
begin
return Time_Span_Unit * NS;
end Nanoseconds;
------------------
-- Microseconds --
------------------
function Microseconds (US : integer) return Time_Span is
begin
return Time_Span_Unit * US * 1_000;
end Microseconds;
-------------------
-- Milliseconds --
-------------------
function Milliseconds (MS : integer) return Time_Span is
begin
return Time_Span_Unit * MS * 1_000_000;
end Milliseconds;
-----------
-- Split --
-----------
procedure Split (T : Time; SC : out Seconds_Count; TS : out Time_Span) is
begin
SC := Seconds_Count (T);
TS := T - Time (SC);
end Split;
-------------
-- Time_Of --
-------------
function Time_Of (SC : Seconds_Count; TS : Time_Span) return Time is
begin
return Time (SC) + TS;
end Time_Of;
end Ada.Real_Time;
|
