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40 | ****************************************************************************/ |
41 | |
42 | #ifndef QTIMESTAMP_H |
43 | #define QTIMESTAMP_H |
44 | |
45 | #include <QtCore/qglobal.h> |
46 | |
47 | QT_BEGIN_HEADER |
48 | |
49 | QT_BEGIN_NAMESPACE |
50 | |
51 | QT_MODULE(Core) |
52 | |
53 | class Q_CORE_EXPORT QElapsedTimer |
54 | { |
55 | public: |
56 | enum ClockType { |
57 | SystemTime, |
58 | MonotonicClock, |
59 | TickCounter, |
60 | MachAbsoluteTime, |
61 | PerformanceCounter |
62 | }; |
63 | static ClockType clockType(); |
64 | static bool isMonotonic(); |
65 | |
66 | void start(); |
67 | qint64 restart(); |
68 | void invalidate(); |
69 | bool isValid() const; |
70 | |
71 | qint64 nsecsElapsed() const; |
72 | qint64 elapsed() const; |
73 | bool hasExpired(qint64 timeout) const; |
74 | |
75 | qint64 msecsSinceReference() const; |
76 | qint64 msecsTo(const QElapsedTimer &other) const; |
77 | qint64 secsTo(const QElapsedTimer &other) const; |
78 | |
79 | bool operator==(const QElapsedTimer &other) const |
80 | { return t1 == other.t1 && t2 == other.t2; } |
81 | bool operator!=(const QElapsedTimer &other) const |
82 | { return !(*this == other); } |
83 | |
84 | friend bool Q_CORE_EXPORT operator<(const QElapsedTimer &v1, const QElapsedTimer &v2); |
85 | |
86 | private: |
87 | qint64 t1; |
88 | qint64 t2; |
89 | }; |
90 | |
91 | QT_END_NAMESPACE |
92 | |
93 | QT_END_HEADER |
94 | |
95 | #endif // QTIMESTAMP_H |
96 | |