Timestamp.cpp

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/* ES40 emulator.
 * Copyright (C) 2007-2008 by the ES40 Emulator Project
 *
 * WWW    : http://sourceforge.net/projects/es40
 * E-mail : camiel@camicom.com
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT 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
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 * 
 * Although this is not required, the author would appreciate being notified of, 
 * and receiving any modifications you may make to the source code that might serve
 * the general public.
 */

//
// Timestamp.cpp
//
// $Id: Timestamp.cpp,v 1.1 2008/03/31 19:13:35 iamcamiel Exp $
//
// Library: Foundation
// Package: DateTime
// Module:  Timestamp
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
// 
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//


#include "VMS/Timestamp.h"
#include "VMS/Exception.h"
#include <algorithm>

namespace Poco {


Timestamp::Timestamp()
{
        update();
}


Timestamp::Timestamp(TimeVal tv)
{
        _ts = tv;
}


Timestamp::Timestamp(const Timestamp& other)
{
        _ts = other._ts;
}


Timestamp::~Timestamp()
{
}


Timestamp& Timestamp::operator = (const Timestamp& other)
{
        _ts = other._ts;
        return *this;
}


Timestamp& Timestamp::operator = (TimeVal tv)
{
        _ts = tv;
        return *this;
}


void Timestamp::swap(Timestamp& timestamp)
{
        std::swap(_ts, timestamp._ts);
}


Timestamp Timestamp::fromEpochTime(std::time_t t)
{
        return Timestamp(TimeVal(t)*resolution());
}


Timestamp Timestamp::fromUtcTime(UtcTimeVal val)
{
        val -= (TimeDiff(0x01b21dd2) << 32) + 0x13814000;
        val /= 10;
        return Timestamp(val);
}


void Timestamp::update()
{
        struct timeval tv;
        if (gettimeofday(&tv, NULL))
                throw SystemException("cannot get time of day");
        _ts = TimeVal(tv.tv_sec)*resolution() + tv.tv_usec;
}


} // namespace Poco

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