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| |
| #ifndef QELAPSEDTIMER_H |
| #define QELAPSEDTIMER_H |
| |
| #include <QtCore/qglobal.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| |
| class Q_CORE_EXPORT QElapsedTimer |
| { |
| public: |
| enum ClockType { |
| SystemTime, |
| MonotonicClock, |
| TickCounter, |
| MachAbsoluteTime, |
| PerformanceCounter |
| }; |
| |
| Q_DECL_CONSTEXPR QElapsedTimer() |
| : t1(Q_INT64_C(0x8000000000000000)), |
| t2(Q_INT64_C(0x8000000000000000)) |
| { |
| } |
| |
| static ClockType clockType() noexcept; |
| static bool isMonotonic() noexcept; |
| |
| void start() noexcept; |
| qint64 restart() noexcept; |
| void invalidate() noexcept; |
| bool isValid() const noexcept; |
| |
| qint64 nsecsElapsed() const noexcept; |
| qint64 elapsed() const noexcept; |
| bool hasExpired(qint64 timeout) const noexcept; |
| |
| qint64 msecsSinceReference() const noexcept; |
| qint64 msecsTo(const QElapsedTimer &other) const noexcept; |
| qint64 secsTo(const QElapsedTimer &other) const noexcept; |
| |
| bool operator==(const QElapsedTimer &other) const noexcept |
| { return t1 == other.t1 && t2 == other.t2; } |
| bool operator!=(const QElapsedTimer &other) const noexcept |
| { return !(*this == other); } |
| |
| friend bool Q_CORE_EXPORT operator<(const QElapsedTimer &v1, const QElapsedTimer &v2) noexcept; |
| |
| private: |
| qint64 t1; |
| qint64 t2; |
| }; |
| |
| QT_END_NAMESPACE |
| |
| #endif // QELAPSEDTIMER_H |