ntptime.cpp
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- /* ***** BEGIN LICENSE BLOCK *****
- * Source last modified: $Id: ntptime.cpp,v 1.3.32.3 2004/07/09 01:48:16 hubbe Exp $
- *
- * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file,
- * are subject to the current version of the RealNetworks Public
- * Source License (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the current version of the RealNetworks Community
- * Source License (the "RCSL") available at
- * http://www.helixcommunity.org/content/rcsl, in which case the RCSL
- * will apply. You may also obtain the license terms directly from
- * RealNetworks. You may not use this file except in compliance with
- * the RPSL or, if you have a valid RCSL with RealNetworks applicable
- * to this file, the RCSL. Please see the applicable RPSL or RCSL for
- * the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL") in which case the provisions of the GPL are applicable
- * instead of those above. If you wish to allow use of your version of
- * this file only under the terms of the GPL, and not to allow others
- * to use your version of this file under the terms of either the RPSL
- * or RCSL, indicate your decision by deleting the provisions above
- * and replace them with the notice and other provisions required by
- * the GPL. If you do not delete the provisions above, a recipient may
- * use your version of this file under the terms of any one of the
- * RPSL, the RCSL or the GPL.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the
- * portions it created.
- *
- * This file, and the files included with this file, is distributed
- * and made available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY
- * KIND, EITHER EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS
- * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET
- * ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- // #include "hlxclib/stdio.h"
- #include "hlxclib/stdlib.h"
- #include "hxtypes.h"
- #include "hxstring.h"
- #include "hxtime.h"
- #include "timeval.h"
- #include "ntptime.h"
- #ifdef _DEBUG
- #undef HX_THIS_FILE
- static const char HX_THIS_FILE[] = __FILE__;
- #endif
- NTPTime::NTPTime()
- {
- // default to now
- Timeval now;
- gettimeofday(&now, 0);
- fromTimeval(now);
- }
- NTPTime::NTPTime(UINT32 ulSec, UINT32 ulFrac):
- m_ulSecond(ulSec),
- m_ulFraction(ulFrac)
- {
- }
- NTPTime::NTPTime(UINT32 mSec)
- {
- fromMSec(mSec);
- }
- NTPTime::NTPTime(Timeval tv)
- {
- fromTimeval(tv);
- }
- NTPTime::NTPTime(const NTPTime& lhs)
- {
- m_ulSecond = lhs.m_ulSecond;
- m_ulFraction = lhs.m_ulFraction;
- }
- NTPTime&
- NTPTime::operator=(const NTPTime& lhs)
- {
- m_ulSecond = lhs.m_ulSecond;
- m_ulFraction = lhs.m_ulFraction;
- return *this;
- }
- INT32
- NTPTime::compare(const NTPTime& lhs) const
- {
- // I'm sure there's a better way to do this...
- if(m_ulSecond > lhs.m_ulSecond)
- {
- return 1;
- }
- else if(m_ulSecond == lhs.m_ulSecond)
- {
- return (INT32) ((m_ulFraction >> 1) - (lhs.m_ulFraction >> 1));
- }
- return -1;
- }
- UINT32
- NTPTime::toMSec()
- {
- // no checking for overflow
- double ms = (m_ulSecond * 1000.0);
- ms += ((double) m_ulFraction / (double) MAX_UINT32) * 1000.0;
- return (UINT32) ms;
- }
- void
- NTPTime::fromMSec(INT32 mSec)
- {
- Timeval tv;
- tv.tv_sec = mSec / 1000;
- tv.tv_usec = (mSec % 1000) * 1000;
- fromTimeval(tv);
- }
- NTPTime::operator UINT32()
- {
- return toMSec();
- }
- NTPTime&
- NTPTime::operator+=(const NTPTime& lhs)
- {
- m_ulSecond += lhs.m_ulSecond;
- if ((MAX_UINT32 - m_ulFraction + 1) <= lhs.m_ulFraction)
- {
- // No overflow checking
- m_ulSecond++;
- m_ulFraction = lhs.m_ulFraction - (MAX_UINT32 - m_ulFraction + 1);
- }
- else
- {
- m_ulFraction += lhs.m_ulFraction;
- }
-
- return *this;
- }
- NTPTime&
- NTPTime::operator-=(const NTPTime& lhs)
- {
- m_ulSecond -= lhs.m_ulSecond;
- if (m_ulFraction < lhs.m_ulFraction)
- {
- // No underflow checking
- m_ulSecond--;
- }
- m_ulFraction = m_ulFraction - lhs.m_ulFraction;
-
- return *this;
- }
- NTPTime
- NTPTime::operator+(const NTPTime& lhs)
- {
- NTPTime tmpTime(*this);
- tmpTime += lhs;
- return tmpTime;
- }
- NTPTime
- NTPTime::operator-(const NTPTime& lhs)
- {
- NTPTime tmpTime(*this);
- tmpTime -= lhs;
- return tmpTime;
- }