blob: 6c5356162f1ea2446b6df100c33980a94706d70b [file] [log] [blame]
/*
* Copyright (C) 2016 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <wtf/MathExtras.h>
#include <wtf/Optional.h>
namespace WTF {
class MonotonicTime;
class PrintStream;
class TimeWithDynamicClockType;
class WallTime;
class Seconds final {
WTF_MAKE_FAST_ALLOCATED;
public:
constexpr Seconds() { }
explicit constexpr Seconds(double value)
: m_value(value)
{
}
constexpr double value() const { return m_value; }
constexpr double minutes() const { return m_value / 60; }
constexpr double seconds() const { return m_value; }
constexpr double milliseconds() const { return seconds() * 1000; }
constexpr double microseconds() const { return milliseconds() * 1000; }
constexpr double nanoseconds() const { return microseconds() * 1000; }
// Keep in mind that Seconds is held in double. If the value is not in range of 53bit integer, the result may not be precise.
template<typename T> T minutesAs() const { static_assert(std::is_integral<T>::value, ""); return clampToAccepting64<T>(minutes()); }
template<typename T> T secondsAs() const { static_assert(std::is_integral<T>::value, ""); return clampToAccepting64<T>(seconds()); }
template<typename T> T millisecondsAs() const { static_assert(std::is_integral<T>::value, ""); return clampToAccepting64<T>(milliseconds()); }
template<typename T> T microsecondsAs() const { static_assert(std::is_integral<T>::value, ""); return clampToAccepting64<T>(microseconds()); }
template<typename T> T nanosecondsAs() const { static_assert(std::is_integral<T>::value, ""); return clampToAccepting64<T>(nanoseconds()); }
static constexpr Seconds fromMinutes(double minutes)
{
return Seconds(minutes * 60);
}
static constexpr Seconds fromHours(double hours)
{
return Seconds(hours * 3600);
}
static constexpr Seconds fromMilliseconds(double milliseconds)
{
return Seconds(milliseconds / 1000);
}
static constexpr Seconds fromMicroseconds(double microseconds)
{
return fromMilliseconds(microseconds / 1000);
}
static constexpr Seconds fromNanoseconds(double nanoseconds)
{
return fromMicroseconds(nanoseconds / 1000);
}
static constexpr Seconds infinity()
{
return Seconds(std::numeric_limits<double>::infinity());
}
static constexpr Seconds nan()
{
return Seconds(std::numeric_limits<double>::quiet_NaN());
}
explicit constexpr operator bool() const { return !!m_value; }
constexpr Seconds operator+(Seconds other) const
{
return Seconds(value() + other.value());
}
constexpr Seconds operator-(Seconds other) const
{
return Seconds(value() - other.value());
}
constexpr Seconds operator-() const
{
return Seconds(-value());
}
// It makes sense to consider scaling a duration, like, "I want to wait 5 times as long as
// last time!".
constexpr Seconds operator*(double scalar) const
{
return Seconds(value() * scalar);
}
constexpr Seconds operator/(double scalar) const
{
return Seconds(value() / scalar);
}
// It's reasonable to think about ratios between Seconds.
constexpr double operator/(Seconds other) const
{
return value() / other.value();
}
Seconds operator%(double scalar) const
{
return Seconds(fmod(value(), scalar));
}
// This solves for r, where:
//
// floor(this / other) + r / other = this / other
//
// Therefore, if this is Seconds then r is Seconds.
Seconds operator%(Seconds other) const
{
return Seconds(fmod(value(), other.value()));
}
Seconds& operator+=(Seconds other)
{
return *this = *this + other;
}
Seconds& operator-=(Seconds other)
{
return *this = *this - other;
}
Seconds& operator*=(double scalar)
{
return *this = *this * scalar;
}
Seconds& operator/=(double scalar)
{
return *this = *this / scalar;
}
Seconds& operator%=(double scalar)
{
return *this = *this % scalar;
}
Seconds& operator%=(Seconds other)
{
return *this = *this % other;
}
WTF_EXPORT_PRIVATE WallTime operator+(WallTime) const;
WTF_EXPORT_PRIVATE MonotonicTime operator+(MonotonicTime) const;
WTF_EXPORT_PRIVATE TimeWithDynamicClockType operator+(const TimeWithDynamicClockType&) const;
WTF_EXPORT_PRIVATE WallTime operator-(WallTime) const;
WTF_EXPORT_PRIVATE MonotonicTime operator-(MonotonicTime) const;
WTF_EXPORT_PRIVATE TimeWithDynamicClockType operator-(const TimeWithDynamicClockType&) const;
constexpr bool operator==(Seconds other) const
{
return m_value == other.m_value;
}
constexpr bool operator!=(Seconds other) const
{
return m_value != other.m_value;
}
constexpr bool operator<(Seconds other) const
{
return m_value < other.m_value;
}
constexpr bool operator>(Seconds other) const
{
return m_value > other.m_value;
}
constexpr bool operator<=(Seconds other) const
{
return m_value <= other.m_value;
}
constexpr bool operator>=(Seconds other) const
{
return m_value >= other.m_value;
}
WTF_EXPORT_PRIVATE void dump(PrintStream&) const;
Seconds isolatedCopy() const
{
return *this;
}
template<class Encoder>
void encode(Encoder& encoder) const
{
encoder << m_value;
}
template<class Decoder>
static Optional<Seconds> decode(Decoder& decoder)
{
Optional<double> seconds;
decoder >> seconds;
if (!seconds)
return WTF::nullopt;
return Seconds(*seconds);
}
template<class Decoder>
static bool decode(Decoder& decoder, Seconds& seconds)
{
double value;
if (!decoder.decode(value))
return false;
seconds = Seconds(value);
return true;
}
struct MarkableTraits;
private:
double m_value { 0 };
};
WTF_EXPORT_PRIVATE void sleep(Seconds);
struct Seconds::MarkableTraits {
static bool isEmptyValue(Seconds seconds)
{
return std::isnan(seconds.value());
}
static constexpr Seconds emptyValue()
{
return Seconds::nan();
}
};
inline namespace seconds_literals {
constexpr Seconds operator"" _min(long double minutes)
{
return Seconds::fromMinutes(minutes);
}
constexpr Seconds operator"" _h(long double hours)
{
return Seconds::fromHours(hours);
}
constexpr Seconds operator"" _s(long double seconds)
{
return Seconds(seconds);
}
constexpr Seconds operator"" _ms(long double milliseconds)
{
return Seconds::fromMilliseconds(milliseconds);
}
constexpr Seconds operator"" _us(long double microseconds)
{
return Seconds::fromMicroseconds(microseconds);
}
constexpr Seconds operator"" _ns(long double nanoseconds)
{
return Seconds::fromNanoseconds(nanoseconds);
}
constexpr Seconds operator"" _min(unsigned long long minutes)
{
return Seconds::fromMinutes(minutes);
}
constexpr Seconds operator"" _h(unsigned long long hours)
{
return Seconds::fromHours(hours);
}
constexpr Seconds operator"" _s(unsigned long long seconds)
{
return Seconds(seconds);
}
constexpr Seconds operator"" _ms(unsigned long long milliseconds)
{
return Seconds::fromMilliseconds(milliseconds);
}
constexpr Seconds operator"" _us(unsigned long long microseconds)
{
return Seconds::fromMicroseconds(microseconds);
}
constexpr Seconds operator"" _ns(unsigned long long nanoseconds)
{
return Seconds::fromNanoseconds(nanoseconds);
}
} // inline seconds_literals
} // namespace WTF
using WTF::sleep;
namespace std {
inline bool isnan(WTF::Seconds seconds)
{
return std::isnan(seconds.value());
}
inline bool isinf(WTF::Seconds seconds)
{
return std::isinf(seconds.value());
}
inline bool isfinite(WTF::Seconds seconds)
{
return std::isfinite(seconds.value());
}
} // namespace std
using namespace WTF::seconds_literals;
using WTF::Seconds;