Revision control
++ // Copyright (C) 2016 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
++ // Qt-Security score:significant reason:default
++
++ #ifndef QELAPSEDTIMER_H
++ #define QELAPSEDTIMER_H
++
++ #include <QtCore/qcompare.h>
++ #include <QtCore/qglobal.h>
++
++ #include <chrono>
++
++ QT_BEGIN_NAMESPACE
++
++ class Q_CORE_EXPORT QElapsedTimer
++ {
++ public:
++ enum ClockType {
++ SystemTime,
++ MonotonicClock,
++ TickCounter Q_DECL_ENUMERATOR_DEPRECATED_X(
++ "Not supported anymore. Use PerformanceCounter instead."),
++ MachAbsoluteTime,
++ PerformanceCounter
++ };
++
++ // similar to std::chrono::*_clock
++ using Duration = std::chrono::nanoseconds;
++ using TimePoint = std::chrono::time_point<std::chrono::steady_clock, Duration>;
++
++ constexpr QElapsedTimer() = default;
++
++ static ClockType clockType() noexcept;
++ static bool isMonotonic() noexcept;
++
++ void start() noexcept;
++ qint64 restart() noexcept;
++ void invalidate() noexcept;
++ bool isValid() const noexcept;
++
++ Duration durationElapsed() const noexcept;
++ qint64 nsecsElapsed() const noexcept;
++ qint64 elapsed() const noexcept;
++ bool hasExpired(qint64 timeout) const noexcept;
++
++ qint64 msecsSinceReference() const noexcept;
++ Duration durationTo(const QElapsedTimer &other) const noexcept;
++ qint64 msecsTo(const QElapsedTimer &other) const noexcept;
++ qint64 secsTo(const QElapsedTimer &other) const noexcept;
++ friend bool Q_CORE_EXPORT operator<(const QElapsedTimer &lhs, const QElapsedTimer &rhs) noexcept;
++
++ private:
++ friend bool comparesEqual(const QElapsedTimer &lhs, const QElapsedTimer &rhs) noexcept
++ {
++ return lhs.t1 == rhs.t1 && lhs.t2 == rhs.t2;
++ }
++ Q_DECLARE_EQUALITY_COMPARABLE(QElapsedTimer)
++
++ friend Qt::strong_ordering compareThreeWay(const QElapsedTimer &lhs,
++ const QElapsedTimer &rhs) noexcept
++ {
++ return Qt::compareThreeWay(lhs.t1, rhs.t1);
++ }
++
++ #if defined(__cpp_lib_three_way_comparison)
++ friend std::strong_ordering
++ operator<=>(const QElapsedTimer &lhs, const QElapsedTimer &rhs) noexcept
++ {
++ return compareThreeWay(lhs, rhs);
++ }
++ #else
++ friend bool operator>(const QElapsedTimer &lhs, const QElapsedTimer &rhs) noexcept
++ {
++ return is_gt(compareThreeWay(lhs, rhs));
++ }
++ friend bool operator<=(const QElapsedTimer &lhs, const QElapsedTimer &rhs) noexcept
++ {
++ return is_lteq(compareThreeWay(lhs, rhs));
++ }
++ friend bool operator>=(const QElapsedTimer &lhs, const QElapsedTimer &rhs) noexcept
++ {
++ return is_gteq(compareThreeWay(lhs, rhs));
++ }
++ #endif // defined(__cpp_lib_three_way_comparison)
++ qint64 t1 = Q_INT64_C(0x8000000000000000);
++ qint64 t2 = Q_INT64_C(0x8000000000000000);
++ };
++
++ QT_END_NAMESPACE
++
++ #endif // QELAPSEDTIMER_H