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130 lines
4.4 KiB
Ada
130 lines
4.4 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- POLYORB COMPONENTS --
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-- --
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-- T I M E _ U T I L S --
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-- --
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-- B o d y --
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-- --
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-- Copyright (C) 2001-2012, Free Software Foundation, Inc. --
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-- --
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-- This is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 3, or (at your option) any later ver- --
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-- sion. This software is distributed in the hope that it will be useful, --
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHAN- --
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-- TABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public --
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-- License for more details. --
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-- --
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-- As a special exception under Section 7 of GPL version 3, you are granted --
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-- additional permissions described in the GCC Runtime Library Exception, --
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-- version 3.1, as published by the Free Software Foundation. --
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-- --
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-- You should have received a copy of the GNU General Public License and --
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-- a copy of the GCC Runtime Library Exception along with this program; --
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-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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-- <http://www.gnu.org/licenses/>. --
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-- --
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-- PolyORB is maintained by AdaCore --
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-- (email: sales@adacore.com) --
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-- --
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------------------------------------------------------------------------------
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with Interfaces.C;
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with System;
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package body Time_Utils is
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use TimeBase;
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Time_Offset : constant TimeT := 141_427 * 86_400 * 10_000_000;
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-- Time offset between 15 october 1582 and 1 january 1970.
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---------
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-- "+" --
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---------
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function "+" (A : TimeBase.TimeT; B : TimeBase.InaccuracyT)
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return TimeBase.TimeT is
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begin
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return A + TimeBase.TimeT (B);
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end "+";
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---------
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-- "-" --
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---------
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function "-" (A : TimeBase.TimeT; B : TimeBase.InaccuracyT)
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return TimeBase.TimeT is
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begin
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return A - TimeBase.TimeT (B);
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end "-";
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---------
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-- "+" --
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---------
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function "+" (A : TimeBase.TimeT; B : TimeBase.TdfT)
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return TimeBase.TimeT is
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begin
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return A + TimeBase.TimeT (B) * 600_000_000;
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end "+";
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---------
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-- "-" --
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---------
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function "-" (A : TimeBase.TimeT; B : TimeBase.TdfT)
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return TimeBase.TimeT is
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begin
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return A + (-B);
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end "-";
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-------------
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-- Compare --
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-------------
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function Compare (A : TimeBase.TimeT; B : TimeBase.TimeT)
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return CosTime.TimeComparison
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is
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use CosTime;
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begin
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if A < B then
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return TCLessThan;
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elsif A = B then
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return TCEqualTo;
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else
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return TCGreaterThan;
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end if;
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end Compare;
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------------------
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-- Current_Time --
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------------------
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function Current_Time return TimeBase.TimeT is
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function Unix_Time (TLOC : System.Address := System.Null_Address)
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return Interfaces.C.long;
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pragma Import (C, Unix_Time, "time");
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begin
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return TimeBase.TimeT (Unix_Time) * 10_000_000 + Time_Offset;
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end Current_Time;
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function Current_Inaccuracy return TimeBase.InaccuracyT is
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begin
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-- Time on Unix has 1 second of precision
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return 10_000_000;
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end Current_Inaccuracy;
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-----------------
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-- Current_Tdf --
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-----------------
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function Current_Tdf return TimeBase.TdfT is
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begin
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-- Return UTC
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return 0;
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end Current_Tdf;
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end Time_Utils;
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