| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
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| 3 | |
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| 4 | #ifndef QTIMERINFO_UNIX_P_H |
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| 5 | #define QTIMERINFO_UNIX_P_H |
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| 6 | |
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| 7 | // |
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| 8 | // W A R N I N G |
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| 9 | // ------------- |
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| 10 | // |
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| 11 | // This file is not part of the Qt API. It exists purely as an |
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| 12 | // implementation detail. This header file may change from version to |
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| 13 | // version without notice, or even be removed. |
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| 14 | // |
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| 15 | // We mean it. |
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| 16 | // |
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| 17 | |
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| 18 | #include <QtCore/private/qglobal_p.h> |
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| 19 | |
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| 20 | #include "qabstracteventdispatcher.h" |
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| 21 | |
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| 22 | #include <sys/time.h> // struct timespec |
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| 23 | #include <chrono> |
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| 24 | |
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| 25 | QT_BEGIN_NAMESPACE |
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| 26 | |
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| 27 | // internal timer info |
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| 28 | struct QTimerInfo |
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| 29 | { |
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| 30 | using Duration = QAbstractEventDispatcher::Duration; |
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| 31 | using TimePoint = std::chrono::time_point<std::chrono::steady_clock, Duration>; |
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| 32 | QTimerInfo(Qt::TimerId timerId, Duration interval, Qt::TimerType type, QObject *obj) |
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| 33 | : interval(interval), id(timerId), timerType(type), obj(obj) |
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| 34 | { |
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| 35 | } |
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| 36 | |
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| 37 | TimePoint timeout = {}; // - when to actually fire |
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| 38 | Duration interval = Duration{-1}; // - timer interval |
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| 39 | Qt::TimerId id = Qt::TimerId::Invalid; // - timer identifier |
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| 40 | Qt::TimerType timerType; // - timer type |
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| 41 | QObject *obj = nullptr; // - object to receive event |
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| 42 | QTimerInfo **activateRef = nullptr; // - ref from activateTimers |
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| 43 | }; |
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| 44 | |
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| 45 | class Q_CORE_EXPORT QTimerInfoList |
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| 46 | { |
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| 47 | public: |
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| 48 | using Duration = QAbstractEventDispatcher::Duration; |
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| 49 | using TimerInfo = QAbstractEventDispatcher::TimerInfoV2; |
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| 50 | QTimerInfoList(); |
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| 51 | |
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| 52 | mutable std::chrono::steady_clock::time_point currentTime; |
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| 53 | |
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| 54 | std::optional<Duration> timerWait(); |
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| 55 | void timerInsert(QTimerInfo *); |
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| 56 | |
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| 57 | Duration remainingDuration(Qt::TimerId timerId) const; |
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| 58 | |
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| 59 | void registerTimer(Qt::TimerId timerId, Duration interval, |
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| 60 | Qt::TimerType timerType, QObject *object); |
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| 61 | bool unregisterTimer(Qt::TimerId timerId); |
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| 62 | bool unregisterTimers(QObject *object); |
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| 63 | QList<TimerInfo> registeredTimers(QObject *object) const; |
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| 64 | |
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| 65 | int activateTimers(); |
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| 66 | bool hasPendingTimers(); |
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| 67 | |
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| 68 | void clearTimers() |
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| 69 | { |
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| 70 | qDeleteAll(c: timers); |
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| 71 | timers.clear(); |
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| 72 | } |
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| 73 | |
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| 74 | bool isEmpty() const { return timers.empty(); } |
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| 75 | |
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| 76 | qsizetype size() const { return timers.size(); } |
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| 77 | |
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| 78 | auto findTimerById(Qt::TimerId timerId) const |
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| 79 | { |
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| 80 | auto matchesId = [timerId](const auto &t) { return t->id == timerId; }; |
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| 81 | return std::find_if(first: timers.cbegin(), last: timers.cend(), pred: matchesId); |
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| 82 | } |
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| 83 | |
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| 84 | private: |
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| 85 | std::chrono::steady_clock::time_point updateCurrentTime() const; |
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| 86 | |
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| 87 | // state variables used by activateTimers() |
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| 88 | QTimerInfo *firstTimerInfo = nullptr; |
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| 89 | QList<QTimerInfo *> timers; |
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| 90 | }; |
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| 91 | |
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| 92 | QT_END_NAMESPACE |
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| 93 | |
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| 94 | #endif // QTIMERINFO_UNIX_P_H |
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| 95 | |
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