da46f3db22
Change-Id: I5aea4aaa6da8cd974234ab3f0c36212d436e11df Reviewed-on: https://gerrit.libreoffice.org/c/core/+/138332 Tested-by: Jenkins Reviewed-by: Caolán McNamara <caolanm@redhat.com>
494 lines
15 KiB
C++
494 lines
15 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <sal/config.h>
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#include <algorithm>
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#if defined(_WIN32)
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#if !defined WIN32_LEAN_AND_MEAN
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# define WIN32_LEAN_AND_MEAN
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#endif
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#include <windows.h>
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#include <mmsystem.h>
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#elif defined UNX
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#include <sys/time.h>
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#include <unistd.h>
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#endif
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#include <time.h>
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#ifdef __MACH__
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#include <mach/clock.h>
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#include <mach/mach.h>
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#include <mach/mach_time.h>
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#endif
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#include <rtl/math.hxx>
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#include <tools/time.hxx>
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#include <com/sun/star/util/DateTime.hpp>
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#include <systemdatetime.hxx>
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#if defined(__sun) && defined(__GNUC__)
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extern long altzone;
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#endif
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namespace {
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const sal_Int64 nanoSecInSec = 1000000000;
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const sal_Int16 secInMin = 60;
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const sal_Int16 minInHour = 60;
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sal_Int64 TimeToNanoSec( const tools::Time& rTime )
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{
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short nSign = (rTime.GetTime() >= 0) ? +1 : -1;
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sal_Int32 nHour = rTime.GetHour();
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sal_Int32 nMin = rTime.GetMin();
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sal_Int32 nSec = rTime.GetSec();
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sal_Int32 nNanoSec = rTime.GetNanoSec();
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sal_Int64 nRet = nNanoSec;
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nRet += nSec * nanoSecInSec;
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nRet += nMin * secInMin * nanoSecInSec;
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nRet += nHour * minInHour * secInMin * nanoSecInSec;
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return (nRet * nSign);
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}
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tools::Time NanoSecToTime( sal_Int64 nNanoSec )
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{
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short nSign;
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if ( nNanoSec < 0 )
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{
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nNanoSec *= -1;
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nSign = -1;
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}
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else
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nSign = 1;
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tools::Time aTime( 0, 0, 0, nNanoSec );
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aTime.SetTime( aTime.GetTime() * nSign );
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return aTime;
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}
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} // anonymous namespace
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namespace tools {
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Time::Time( TimeInitSystem )
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{
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if ( !GetSystemDateTime( nullptr, &nTime ) )
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nTime = 0;
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}
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Time::Time( const tools::Time& rTime )
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{
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nTime = rTime.nTime;
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}
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Time::Time( sal_uInt32 nHour, sal_uInt32 nMin, sal_uInt32 nSec, sal_uInt64 nNanoSec )
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{
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init(nHour, nMin, nSec, nNanoSec);
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}
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Time::Time( const css::util::Time &_rTime )
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{
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init(_rTime.Hours, _rTime.Minutes, _rTime.Seconds, _rTime.NanoSeconds);
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}
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Time::Time( const css::util::DateTime &_rDateTime )
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{
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init(_rDateTime.Hours, _rDateTime.Minutes, _rDateTime.Seconds, _rDateTime.NanoSeconds);
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}
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void tools::Time::init( sal_uInt32 nHour, sal_uInt32 nMin, sal_uInt32 nSec, sal_uInt64 nNanoSec )
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{
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// normalize time
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nSec += nNanoSec / nanoSecInSec;
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nNanoSec %= nanoSecInSec;
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nMin += nSec / secInMin;
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nSec %= secInMin;
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nHour += nMin / minInHour;
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nMin %= minInHour;
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// construct time
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nTime = nNanoSec +
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nSec * SEC_MASK +
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nMin * MIN_MASK +
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nHour * HOUR_MASK;
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}
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void tools::Time::SetHour( sal_uInt16 nNewHour )
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{
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short nSign = (nTime >= 0) ? +1 : -1;
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sal_Int32 nMin = GetMin();
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sal_Int32 nSec = GetSec();
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sal_Int32 nNanoSec = GetNanoSec();
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nTime = nSign *
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( nNanoSec +
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nSec * SEC_MASK +
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nMin * MIN_MASK +
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nNewHour * HOUR_MASK );
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}
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void tools::Time::SetMin( sal_uInt16 nNewMin )
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{
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short nSign = (nTime >= 0) ? +1 : -1;
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sal_Int32 nHour = GetHour();
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sal_Int32 nSec = GetSec();
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sal_Int32 nNanoSec = GetNanoSec();
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// no overflow
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nNewMin = nNewMin % minInHour;
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nTime = nSign *
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( nNanoSec +
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nSec * SEC_MASK +
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nNewMin * MIN_MASK +
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nHour * HOUR_MASK );
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}
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void tools::Time::SetSec( sal_uInt16 nNewSec )
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{
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short nSign = (nTime >= 0) ? +1 : -1;
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sal_Int32 nHour = GetHour();
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sal_Int32 nMin = GetMin();
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sal_Int32 nNanoSec = GetNanoSec();
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// no overflow
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nNewSec = nNewSec % secInMin;
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nTime = nSign *
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( nNanoSec +
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nNewSec * SEC_MASK +
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nMin * MIN_MASK +
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nHour * HOUR_MASK );
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}
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void tools::Time::SetNanoSec( sal_uInt32 nNewNanoSec )
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{
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short nSign = (nTime >= 0) ? +1 : -1;
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sal_Int32 nHour = GetHour();
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sal_Int32 nMin = GetMin();
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sal_Int32 nSec = GetSec();
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// no overflow
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nNewNanoSec = nNewNanoSec % nanoSecInSec;
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nTime = nSign *
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( nNewNanoSec +
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nSec * SEC_MASK +
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nMin * MIN_MASK +
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nHour * HOUR_MASK );
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}
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sal_Int64 tools::Time::GetNSFromTime() const
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{
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short nSign = (nTime >= 0) ? +1 : -1;
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sal_Int32 nHour = GetHour();
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sal_Int32 nMin = GetMin();
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sal_Int32 nSec = GetSec();
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sal_Int32 nNanoSec = GetNanoSec();
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return nSign *
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( nNanoSec +
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nSec * nanoSecInSec +
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nMin * (secInMin * nanoSecInSec) +
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nHour * (minInHour * secInMin * nanoSecInSec) );
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}
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void tools::Time::MakeTimeFromNS( sal_Int64 nNS )
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{
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short nSign;
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if ( nNS < 0 )
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{
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nNS *= -1;
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nSign = -1;
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}
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else
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nSign = 1;
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// avoid overflow when sal_uIntPtr is 32 bits
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tools::Time aTime( 0, 0, nNS/nanoSecInSec, nNS % nanoSecInSec );
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SetTime( aTime.GetTime() * nSign );
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}
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sal_Int32 tools::Time::GetMSFromTime() const
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{
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short nSign = (nTime >= 0) ? +1 : -1;
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sal_Int32 nHour = GetHour();
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sal_Int32 nMin = GetMin();
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sal_Int32 nSec = GetSec();
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sal_Int32 nNanoSec = GetNanoSec();
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return nSign *
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( nNanoSec/1000000 +
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nSec * 1000 +
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nMin * 60000 +
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nHour * 3600000 );
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}
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void tools::Time::MakeTimeFromMS( sal_Int32 nMS )
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{
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short nSign;
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if ( nMS < 0 )
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{
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nMS *= -1;
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nSign = -1;
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}
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else
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nSign = 1;
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// avoid overflow when sal_uIntPtr is 32 bits
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tools::Time aTime( 0, 0, nMS/1000, (nMS % 1000) * 1000000 );
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SetTime( aTime.GetTime() * nSign );
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}
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double tools::Time::GetTimeInDays() const
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{
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short nSign = (nTime >= 0) ? +1 : -1;
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double nHour = GetHour();
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double nMin = GetMin();
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double nSec = GetSec();
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double nNanoSec = GetNanoSec();
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return (nHour + (nMin / 60) + (nSec / (minInHour * secInMin)) + (nNanoSec / (minInHour * secInMin * nanoSecInSec))) / 24 * nSign;
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}
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// static
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void tools::Time::GetClock( double fTimeInDays,
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sal_uInt16& nHour, sal_uInt16& nMinute, sal_uInt16& nSecond,
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double& fFractionOfSecond, int nFractionDecimals )
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{
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const double fTime = fTimeInDays - rtl::math::approxFloor(fTimeInDays); // date part absent
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// If 0 then full day (or no day), shortcut.
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// If < 0 then approxFloor() effectively returned the ceiling (note this
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// also holds for negative fTimeInDays values) because of a near identical
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// value, shortcut this to a full day as well.
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// If >= 1.0 (actually == 1.0) then fTimeInDays is a negative small value
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// not significant for a representable time and approxFloor() returned -1,
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// shortcut to 0:0:0, otherwise it would become 24:0:0.
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if (fTime <= 0.0 || fTime >= 1.0)
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{
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nHour = nMinute = nSecond = 0;
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fFractionOfSecond = 0.0;
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return;
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}
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// In seconds, including milli and nano.
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const double fRawSeconds = fTime * tools::Time::secondPerDay;
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// Round to nanoseconds most, which is the highest resolution this could be
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// influenced by, but if the original value included a date round to at
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// most 14 significant digits (including adding 4 for *86400), otherwise we
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// might end up with a fake precision of h:m:s.999999986 which in fact
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// should had been h:m:s+1
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// BUT, leave at least 2 decimals to round. Which shouldn't be a problem in
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// practice because class Date can calculate only 8-digit days for it's
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// sal_Int16 year range, which exactly leaves us with 14-4-8=2.
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int nDec = 9;
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const double fAbsTimeInDays = fabs( fTimeInDays);
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if (fAbsTimeInDays >= 1.0)
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{
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const int nDig = static_cast<int>(ceil( log10( fAbsTimeInDays)));
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nDec = std::clamp( 10 - nDig, 2, 9 );
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}
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double fSeconds = rtl::math::round( fRawSeconds, nDec);
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// If this ended up as a full day the original value was very very close
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// but not quite. Take that.
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if (fSeconds >= tools::Time::secondPerDay)
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fSeconds = fRawSeconds;
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// Now do not round values (specifically not up), but truncate to the next
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// magnitude, so 23:59:59.99 is still 23:59:59 and not 24:00:00 (or even
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// 00:00:00 which Excel does).
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nHour = fSeconds / tools::Time::secondPerHour;
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fSeconds -= nHour * tools::Time::secondPerHour;
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nMinute = fSeconds / tools::Time::secondPerMinute;
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fSeconds -= nMinute * tools::Time::secondPerMinute;
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nSecond = fSeconds;
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fSeconds -= nSecond;
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assert(fSeconds < 1.0); // or back to the drawing board...
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if (nFractionDecimals > 0)
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{
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// Do not simply round the fraction, otherwise .999 would end up as .00
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// again. Truncate instead if rounding would round up into an integer
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// value.
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fFractionOfSecond = rtl::math::round( fSeconds, nFractionDecimals);
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if (fFractionOfSecond >= 1.0)
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fFractionOfSecond = rtl::math::pow10Exp( std::trunc(
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rtl::math::pow10Exp( fSeconds, nFractionDecimals)), -nFractionDecimals);
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}
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else
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fFractionOfSecond = fSeconds;
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}
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Time& tools::Time::operator =( const tools::Time& rTime )
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{
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nTime = rTime.nTime;
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return *this;
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}
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Time& tools::Time::operator +=( const tools::Time& rTime )
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{
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nTime = NanoSecToTime( TimeToNanoSec( *this ) +
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TimeToNanoSec( rTime ) ).GetTime();
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return *this;
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}
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Time& tools::Time::operator -=( const tools::Time& rTime )
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{
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nTime = NanoSecToTime( TimeToNanoSec( *this ) -
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TimeToNanoSec( rTime ) ).GetTime();
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return *this;
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}
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Time operator +( const tools::Time& rTime1, const tools::Time& rTime2 )
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{
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return NanoSecToTime( TimeToNanoSec( rTime1 ) +
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TimeToNanoSec( rTime2 ) );
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}
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Time operator -( const tools::Time& rTime1, const tools::Time& rTime2 )
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{
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return NanoSecToTime( TimeToNanoSec( rTime1 ) -
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TimeToNanoSec( rTime2 ) );
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}
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bool tools::Time::IsEqualIgnoreNanoSec( const tools::Time& rTime ) const
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{
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sal_Int32 n1 = (nTime < 0 ? -static_cast<sal_Int32>(GetNanoSec()) : GetNanoSec() );
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sal_Int32 n2 = (rTime.nTime < 0 ? -static_cast<sal_Int32>(rTime.GetNanoSec()) : rTime.GetNanoSec() );
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return (nTime - n1) == (rTime.nTime - n2);
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}
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Time tools::Time::GetUTCOffset()
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{
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#if defined(_WIN32)
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TIME_ZONE_INFORMATION aTimeZone;
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aTimeZone.Bias = 0;
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DWORD nTimeZoneRet = GetTimeZoneInformation( &aTimeZone );
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sal_Int32 nTempTime = aTimeZone.Bias;
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if ( nTimeZoneRet == TIME_ZONE_ID_STANDARD )
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nTempTime += aTimeZone.StandardBias;
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else if ( nTimeZoneRet == TIME_ZONE_ID_DAYLIGHT )
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nTempTime += aTimeZone.DaylightBias;
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tools::Time aTime( 0, static_cast<sal_uInt16>(abs( nTempTime )) );
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if ( nTempTime > 0 )
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aTime = -aTime;
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return aTime;
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#else
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static sal_uInt64 nCacheTicks = 0;
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static sal_Int32 nCacheSecOffset = -1;
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sal_uInt64 nTicks = tools::Time::GetSystemTicks();
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time_t nTime;
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tm aTM;
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short nTempTime;
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// determine value again if needed
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if ( (nCacheSecOffset == -1) ||
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((nTicks - nCacheTicks) > 360000) ||
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( nTicks < nCacheTicks ) // handle overflow
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)
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{
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nTime = time( nullptr );
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localtime_r( &nTime, &aTM );
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auto nLocalTime = mktime( &aTM );
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#if defined(__sun)
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// Solaris gmtime_r() seems not to handle daylight saving time
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// flags correctly
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auto nUTC = nLocalTime + ( aTM.tm_isdst == 0 ? timezone : altzone );
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#elif defined( LINUX )
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// Linux mktime() seems not to handle tm_isdst correctly
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auto nUTC = nLocalTime - aTM.tm_gmtoff;
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#else
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gmtime_r( &nTime, &aTM );
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auto nUTC = mktime( &aTM );
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#endif
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nCacheTicks = nTicks;
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nCacheSecOffset = (nLocalTime-nUTC) / 60;
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}
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nTempTime = abs( nCacheSecOffset );
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tools::Time aTime( 0, static_cast<sal_uInt16>(nTempTime) );
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if ( nCacheSecOffset < 0 )
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aTime = -aTime;
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return aTime;
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#endif
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}
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sal_uInt64 tools::Time::GetSystemTicks()
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{
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return tools::Time::GetMonotonicTicks() / 1000;
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}
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#ifdef _WIN32
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static LARGE_INTEGER initPerformanceFrequency()
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{
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LARGE_INTEGER nTicksPerSecond = { 0, 0 };
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if (!QueryPerformanceFrequency(&nTicksPerSecond))
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nTicksPerSecond.QuadPart = 0;
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return nTicksPerSecond;
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}
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#endif
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sal_uInt64 tools::Time::GetMonotonicTicks()
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{
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#ifdef _WIN32
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static const LARGE_INTEGER nTicksPerSecond = initPerformanceFrequency();
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if (nTicksPerSecond.QuadPart > 0)
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{
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LARGE_INTEGER nPerformanceCount;
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QueryPerformanceCounter(&nPerformanceCount);
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return static_cast<sal_uInt64>(
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( nPerformanceCount.QuadPart * 1000 * 1000 ) / nTicksPerSecond.QuadPart );
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}
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else
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{
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return static_cast<sal_uInt64>( timeGetTime() * 1000 );
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}
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#else
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sal_uInt64 nMicroSeconds;
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#ifdef __MACH__
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static mach_timebase_info_data_t info = { 0, 0 };
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if ( 0 == info.numer )
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mach_timebase_info( &info );
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nMicroSeconds = mach_absolute_time() * static_cast<double>(info.numer / info.denom) / 1000;
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#else
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#if defined(_POSIX_TIMERS)
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struct timespec currentTime;
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clock_gettime( CLOCK_MONOTONIC, ¤tTime );
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nMicroSeconds
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= static_cast<sal_uInt64>(currentTime.tv_sec) * 1000 * 1000 + currentTime.tv_nsec / 1000;
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#else
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struct timeval currentTime;
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gettimeofday( ¤tTime, nullptr );
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nMicroSeconds = static_cast<sal_uInt64>(currentTime.tv_sec) * 1000 * 1000 + currentTime.tv_usec;
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#endif
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#endif // __MACH__
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return nMicroSeconds;
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#endif // _WIN32
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}
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} /* namespace tools */
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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