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39
40#ifndef QTIMERINFO_UNIX_P_H
41#define QTIMERINFO_UNIX_P_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists purely as an
48// implementation detail. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include <QtCore/private/qglobal_p.h>
55
56// #define QTIMERINFO_DEBUG
57
58#include "qabstracteventdispatcher.h"
59
60#include <sys/time.h> // struct timeval
61
62QT_BEGIN_NAMESPACE
63
64// internal timer info
65struct QTimerInfo {
66 int id; // - timer identifier
67 int interval; // - timer interval in milliseconds
68 Qt::TimerType timerType; // - timer type
69 timespec timeout; // - when to actually fire
70 QObject *obj; // - object to receive event
71 QTimerInfo **activateRef; // - ref from activateTimers
72
73#ifdef QTIMERINFO_DEBUG
74 timeval expected; // when timer is expected to fire
75 float cumulativeError;
76 uint count;
77#endif
78};
79
80class Q_CORE_EXPORT QTimerInfoList : public QList<QTimerInfo*>
81{
82#if ((_POSIX_MONOTONIC_CLOCK-0 <= 0) && !defined(Q_OS_MAC)) || defined(QT_BOOTSTRAPPED)
83 timespec previousTime;
84 clock_t previousTicks;
85 int ticksPerSecond;
86 int msPerTick;
87
88 bool timeChanged(timespec *delta);
89 void timerRepair(const timespec &);
90#endif
91
92 // state variables used by activateTimers()
93 QTimerInfo *firstTimerInfo;
94
95public:
96 QTimerInfoList();
97
98 timespec currentTime;
99 timespec updateCurrentTime();
100
101 // must call updateCurrentTime() first!
102 void repairTimersIfNeeded();
103
104 bool timerWait(timespec &);
105 void timerInsert(QTimerInfo *);
106
107 int timerRemainingTime(int timerId);
108
109 void registerTimer(int timerId, int interval, Qt::TimerType timerType, QObject *object);
110 bool unregisterTimer(int timerId);
111 bool unregisterTimers(QObject *object);
112 QList<QAbstractEventDispatcher::TimerInfo> registeredTimers(QObject *object) const;
113
114 int activateTimers();
115};
116
117QT_END_NAMESPACE
118
119#endif // QTIMERINFO_UNIX_P_H
120

source code of qtbase/src/corelib/kernel/qtimerinfo_unix_p.h