146 lines
4.2 KiB
C++
146 lines
4.2 KiB
C++
/*
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* Copyright (C) 2016 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include <wtf/TimeWithDynamicClockType.h>
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#include <cmath>
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#include <wtf/Condition.h>
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#include <wtf/PrintStream.h>
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#include <wtf/Lock.h>
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namespace WTF {
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TimeWithDynamicClockType TimeWithDynamicClockType::now(ClockType type)
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{
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switch (type) {
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case ClockType::Wall:
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return WallTime::now();
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case ClockType::Monotonic:
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return MonotonicTime::now();
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}
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RELEASE_ASSERT_NOT_REACHED();
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return TimeWithDynamicClockType();
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}
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TimeWithDynamicClockType TimeWithDynamicClockType::nowWithSameClock() const
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{
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return now(clockType());
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}
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WallTime TimeWithDynamicClockType::wallTime() const
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{
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RELEASE_ASSERT(m_type == ClockType::Wall);
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return WallTime::fromRawSeconds(m_value);
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}
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MonotonicTime TimeWithDynamicClockType::monotonicTime() const
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{
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RELEASE_ASSERT(m_type == ClockType::Monotonic);
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return MonotonicTime::fromRawSeconds(m_value);
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}
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WallTime TimeWithDynamicClockType::approximateWallTime() const
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{
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switch (m_type) {
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case ClockType::Wall:
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return wallTime();
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case ClockType::Monotonic:
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return monotonicTime().approximateWallTime();
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}
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RELEASE_ASSERT_NOT_REACHED();
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return WallTime();
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}
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MonotonicTime TimeWithDynamicClockType::approximateMonotonicTime() const
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{
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switch (m_type) {
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case ClockType::Wall:
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return wallTime().approximateMonotonicTime();
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case ClockType::Monotonic:
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return monotonicTime();
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}
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RELEASE_ASSERT_NOT_REACHED();
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return MonotonicTime();
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}
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Seconds TimeWithDynamicClockType::operator-(const TimeWithDynamicClockType& other) const
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{
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RELEASE_ASSERT(m_type == other.m_type);
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return Seconds(m_value - other.m_value);
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}
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bool TimeWithDynamicClockType::operator<(const TimeWithDynamicClockType& other) const
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{
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RELEASE_ASSERT(m_type == other.m_type);
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return m_value < other.m_value;
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}
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bool TimeWithDynamicClockType::operator>(const TimeWithDynamicClockType& other) const
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{
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RELEASE_ASSERT(m_type == other.m_type);
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return m_value > other.m_value;
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}
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bool TimeWithDynamicClockType::operator<=(const TimeWithDynamicClockType& other) const
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{
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RELEASE_ASSERT(m_type == other.m_type);
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return m_value <= other.m_value;
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}
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bool TimeWithDynamicClockType::operator>=(const TimeWithDynamicClockType& other) const
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{
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RELEASE_ASSERT(m_type == other.m_type);
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return m_value >= other.m_value;
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}
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void TimeWithDynamicClockType::dump(PrintStream& out) const
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{
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out.print(m_type, "(", m_value, " sec)");
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}
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void sleep(const TimeWithDynamicClockType& time)
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{
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Lock fakeLock;
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Condition fakeCondition;
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Locker fakeLocker { fakeLock };
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fakeCondition.waitUntil(fakeLock, time);
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}
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bool hasElapsed(const TimeWithDynamicClockType& time)
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{
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// Avoid doing now().
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if (!(time > time.withSameClockAndRawSeconds(0)))
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return true;
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if (std::isinf(time.secondsSinceEpoch().value()))
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return false;
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return time <= time.nowWithSameClock();
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}
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} // namespace WTF
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