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/*
* 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.
*/
#include "config.h"
#include <wtf/TimeWithDynamicClockType.h>
#include <cmath>
#include <wtf/Condition.h>
#include <wtf/PrintStream.h>
#include <wtf/Lock.h>
namespace WTF {
TimeWithDynamicClockType TimeWithDynamicClockType::now(ClockType type)
{
switch (type) {
case ClockType::Wall:
return WallTime::now();
case ClockType::Monotonic:
return MonotonicTime::now();
case ClockType::Approximate:
return ApproximateTime::now();
case ClockType::Continuous:
return ContinuousTime::now();
case ClockType::ContinuousApproximate:
return ContinuousApproximateTime::now();
}
RELEASE_ASSERT_NOT_REACHED();
return TimeWithDynamicClockType();
}
TimeWithDynamicClockType TimeWithDynamicClockType::nowWithSameClock() const
{
return now(clockType());
}
WallTime TimeWithDynamicClockType::wallTime() const
{
RELEASE_ASSERT(m_type == ClockType::Wall);
return WallTime::fromRawSeconds(m_value);
}
MonotonicTime TimeWithDynamicClockType::monotonicTime() const
{
RELEASE_ASSERT(m_type == ClockType::Monotonic);
return MonotonicTime::fromRawSeconds(m_value);
}
ApproximateTime TimeWithDynamicClockType::approximateTime() const
{
RELEASE_ASSERT(m_type == ClockType::Approximate);
return ApproximateTime::fromRawSeconds(m_value);
}
ContinuousTime TimeWithDynamicClockType::continuousTime() const
{
RELEASE_ASSERT(m_type == ClockType::Continuous);
return ContinuousTime::fromRawSeconds(m_value);
}
ContinuousApproximateTime TimeWithDynamicClockType::continuousApproximateTime() const
{
RELEASE_ASSERT(m_type == ClockType::ContinuousApproximate);
return ContinuousApproximateTime::fromRawSeconds(m_value);
}
WallTime TimeWithDynamicClockType::approximateWallTime() const
{
switch (m_type) {
case ClockType::Wall:
return wallTime();
case ClockType::Monotonic:
return monotonicTime().approximateWallTime();
case ClockType::Approximate:
return approximateTime().approximateWallTime();
case ClockType::Continuous:
return continuousTime().approximateWallTime();
case ClockType::ContinuousApproximate:
return ContinuousApproximateTime().approximateWallTime();
}
RELEASE_ASSERT_NOT_REACHED();
return WallTime();
}
MonotonicTime TimeWithDynamicClockType::approximateMonotonicTime() const
{
switch (m_type) {
case ClockType::Wall:
return wallTime().approximateMonotonicTime();
case ClockType::Monotonic:
return monotonicTime();
case ClockType::Approximate:
return approximateTime().approximateMonotonicTime();
case ClockType::Continuous:
return continuousTime().approximateMonotonicTime();
case ClockType::ContinuousApproximate:
return ContinuousApproximateTime().approximateMonotonicTime();
}
RELEASE_ASSERT_NOT_REACHED();
return MonotonicTime();
}
Seconds TimeWithDynamicClockType::operator-(const TimeWithDynamicClockType& other) const
{
RELEASE_ASSERT(m_type == other.m_type);
return Seconds(m_value - other.m_value);
}
bool TimeWithDynamicClockType::operator<(const TimeWithDynamicClockType& other) const
{
RELEASE_ASSERT(m_type == other.m_type);
return m_value < other.m_value;
}
bool TimeWithDynamicClockType::operator>(const TimeWithDynamicClockType& other) const
{
RELEASE_ASSERT(m_type == other.m_type);
return m_value > other.m_value;
}
bool TimeWithDynamicClockType::operator<=(const TimeWithDynamicClockType& other) const
{
RELEASE_ASSERT(m_type == other.m_type);
return m_value <= other.m_value;
}
bool TimeWithDynamicClockType::operator>=(const TimeWithDynamicClockType& other) const
{
RELEASE_ASSERT(m_type == other.m_type);
return m_value >= other.m_value;
}
void TimeWithDynamicClockType::dump(PrintStream& out) const
{
out.print(m_type, "(", m_value, " sec)");
}
void sleep(const TimeWithDynamicClockType& time)
{
Lock fakeLock;
Condition fakeCondition;
Locker fakeLocker { fakeLock };
fakeCondition.waitUntil(fakeLock, time);
}
bool hasElapsed(const TimeWithDynamicClockType& time)
{
// Avoid doing now().
if (!(time > time.withSameClockAndRawSeconds(0)))
return true;
if (time.secondsSinceEpoch().isInfinity())
return false;
return time <= time.nowWithSameClock();
}
} // namespace WTF
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