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| -rw-r--r-- | include/tools/time.hxx | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/include/tools/time.hxx b/include/tools/time.hxx new file mode 100644 index 000000000..414b28f72 --- /dev/null +++ b/include/tools/time.hxx @@ -0,0 +1,177 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ +#ifndef INCLUDED_TOOLS_TIME_HXX +#define INCLUDED_TOOLS_TIME_HXX + +#include <tools/toolsdllapi.h> +#include <com/sun/star/util/Time.hpp> + +namespace com::sun::star::util { struct DateTime; } + +/** + @WARNING: This class can serve both as wall clock time and time duration, and + the mixing of these concepts leads to problems such as there being + 25 hours or 10 minus 20 seconds being (non-negative) 10 seconds. +*/ + +namespace tools { + +class SAL_WARN_UNUSED TOOLS_DLLPUBLIC Time +{ +private: + sal_Int64 nTime; + void init( sal_uInt32 nHour, sal_uInt32 nMin, + sal_uInt32 nSec, sal_uInt64 nNanoSec); + +public: + enum TimeInitSystem + { + SYSTEM + }; + + // temporary until all uses are inspected and resolved + enum TimeInitEmpty + { + EMPTY + }; + static const sal_Int64 hourPerDay = 24; + static const sal_Int64 minutePerHour = 60; + static const sal_Int64 secondPerMinute = 60; + static const sal_Int64 nanoSecPerSec = 1000000000; + static const sal_Int64 nanoSecPerMinute = nanoSecPerSec * secondPerMinute; + static const sal_Int64 nanoSecPerHour = nanoSecPerSec * secondPerMinute * minutePerHour; + static const sal_Int64 nanoSecPerDay = nanoSecPerSec * secondPerMinute * minutePerHour * hourPerDay; + static const sal_Int64 secondPerHour = secondPerMinute * minutePerHour; + static const sal_Int64 secondPerDay = secondPerMinute * minutePerHour * hourPerDay; + static const sal_Int64 minutePerDay = minutePerHour * hourPerDay; + static const sal_Int64 nanoPerMicro = 1000; + static const sal_Int64 nanoPerMilli = 1000000; + static const sal_Int64 nanoPerCenti = 10000000; + + explicit Time( TimeInitEmpty ) + { nTime = 0; } + explicit Time( TimeInitSystem ); + explicit Time( sal_Int64 _nTime ) { Time::nTime = _nTime; } + Time( const tools::Time& rTime ); + Time( const css::util::Time& rTime ); + explicit Time( const css::util::DateTime& rDateTime ); + Time( sal_uInt32 nHour, sal_uInt32 nMin, + sal_uInt32 nSec = 0, sal_uInt64 nNanoSec = 0 ); + + void SetTime( sal_Int64 nNewTime ) { nTime = nNewTime; } + sal_Int64 GetTime() const { return nTime; } + css::util::Time GetUNOTime() const { return css::util::Time(GetNanoSec(),GetSec(),GetMin(),GetHour(),false); } + + void SetHour( sal_uInt16 nNewHour ); + void SetMin( sal_uInt16 nNewMin ); + void SetSec( sal_uInt16 nNewSec ); + void SetNanoSec( sal_uInt32 nNewNanoSec ); + sal_uInt16 GetHour() const + { sal_uInt64 nTempTime = (nTime >= 0) ? nTime : -nTime; + return static_cast<sal_uInt16>(nTempTime / SAL_CONST_UINT64(10000000000000)); } + sal_uInt16 GetMin() const + { sal_uInt64 nTempTime = (nTime >= 0) ? nTime : -nTime; + return static_cast<sal_uInt16>((nTempTime / SAL_CONST_UINT64(100000000000)) % 100); } + sal_uInt16 GetSec() const + { sal_uInt64 nTempTime = (nTime >= 0) ? nTime : -nTime; + return static_cast<sal_uInt16>((nTempTime / SAL_CONST_UINT64(1000000000)) % 100); } + sal_uInt32 GetNanoSec() const + { sal_uInt64 nTempTime = (nTime >= 0) ? nTime : -nTime; + return static_cast<sal_uInt32>( nTempTime % SAL_CONST_UINT64(1000000000)); } + + // TODO: consider removing GetMSFromTime and MakeTimeFromMS? + sal_Int32 GetMSFromTime() const; + void MakeTimeFromMS( sal_Int32 nMS ); + sal_Int64 GetNSFromTime() const; + void MakeTimeFromNS( sal_Int64 nNS ); + + /// 12 hours == 0.5 days + double GetTimeInDays() const; + + /** Get the wall clock time particles for a (date+)time value. + + Does the necessary rounding and truncating to obtain hour, minute, + second and fraction of second from a double time value (time in days, + 0.5 == 12h) such that individual values are not rounded up, i.e. + x:59:59.999 does not yield x+1:0:0.00 + + A potential date component (fTimeInDays >= 1.0) is discarded. + + @param nFractionDecimals + If > 0 fFractionOfSecond is truncated to that amount of + decimals. + Else fFractionOfSecond returns the full remainder of the + fractional second. + */ + static void GetClock( double fTimeInDays, + sal_uInt16& nHour, sal_uInt16& nMinute, sal_uInt16& nSecond, + double& fFractionOfSecond, int nFractionDecimals ); + + bool IsEqualIgnoreNanoSec( const tools::Time& rTime ) const; + + bool operator ==( const tools::Time& rTime ) const + { return (nTime == rTime.nTime); } + bool operator !=( const tools::Time& rTime ) const + { return (nTime != rTime.nTime); } + bool operator >( const tools::Time& rTime ) const + { return (nTime > rTime.nTime); } + bool operator <( const tools::Time& rTime ) const + { return (nTime < rTime.nTime); } + bool operator >=( const tools::Time& rTime ) const + { return (nTime >= rTime.nTime); } + bool operator <=( const tools::Time& rTime ) const + { return (nTime <= rTime.nTime); } + + static Time GetUTCOffset(); + + /** + * Elapsed time in milliseconds (1e-3) since some unspecified starting point + * + * Convenience function, which just calls GetMonotonicTicks() / 1000. + */ + static sal_uInt64 GetSystemTicks(); + + /** + * Elapsed time in microseconds (1e-6) since some unspecified starting point + * + * Uses the high-precision, monotonic time sources provided by the OS, if + * available. Don't try to relate it to the system time, and also it's long + * time accuracy is not the best. + * + * Currently used to measure the runtime of OpenCL shaders and to set a + * message creation timestamp to allow filtering of invalid timer messages. + * + * @return current system ticks in microseconds (1e-6s) + */ + static sal_uInt64 GetMonotonicTicks(); + + tools::Time& operator =( const tools::Time& rTime ); + Time operator -() const + { return Time( -nTime ); } + tools::Time& operator +=( const tools::Time& rTime ); + tools::Time& operator -=( const tools::Time& rTime ); + TOOLS_DLLPUBLIC friend Time operator +( const tools::Time& rTime1, const tools::Time& rTime2 ); + TOOLS_DLLPUBLIC friend Time operator -( const tools::Time& rTime1, const tools::Time& rTime2 ); +}; + +} /* namespace tools */ + +#endif + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |