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39
40#ifndef QEVENTDISPATCHER_UNIX_P_H
41#define QEVENTDISPATCHER_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/qabstracteventdispatcher.h"
55#include "QtCore/qlist.h"
56#include "private/qabstracteventdispatcher_p.h"
57#include "private/qcore_unix_p.h"
58#include "QtCore/qvarlengtharray.h"
59#include "private/qtimerinfo_unix_p.h"
60
61QT_BEGIN_NAMESPACE
62
63class QEventDispatcherUNIXPrivate;
64
65struct Q_CORE_EXPORT QSocketNotifierSetUNIX final
66{
67 inline QSocketNotifierSetUNIX() noexcept;
68
69 inline bool isEmpty() const noexcept;
70 inline short events() const noexcept;
71
72 QSocketNotifier *notifiers[3];
73};
74
75Q_DECLARE_TYPEINFO(QSocketNotifierSetUNIX, Q_PRIMITIVE_TYPE);
76
77struct QThreadPipe
78{
79 QThreadPipe();
80 ~QThreadPipe();
81
82 bool init();
83 pollfd prepare() const;
84
85 void wakeUp();
86 int check(const pollfd &pfd);
87
88 // note for eventfd(7) support:
89 // if fds[1] is -1, then eventfd(7) is in use and is stored in fds[0]
90 int fds[2];
91 QAtomicInt wakeUps;
92
93#if defined(Q_OS_VXWORKS)
94 static const int len_name = 20;
95 char name[len_name];
96#endif
97};
98
99class Q_CORE_EXPORT QEventDispatcherUNIX : public QAbstractEventDispatcher
100{
101 Q_OBJECT
102 Q_DECLARE_PRIVATE(QEventDispatcherUNIX)
103
104public:
105 explicit QEventDispatcherUNIX(QObject *parent = nullptr);
106 ~QEventDispatcherUNIX();
107
108 bool processEvents(QEventLoop::ProcessEventsFlags flags) override;
109 bool hasPendingEvents() override;
110
111 void registerSocketNotifier(QSocketNotifier *notifier) final;
112 void unregisterSocketNotifier(QSocketNotifier *notifier) final;
113
114 void registerTimer(int timerId, int interval, Qt::TimerType timerType, QObject *object) final;
115 bool unregisterTimer(int timerId) final;
116 bool unregisterTimers(QObject *object) final;
117 QList<TimerInfo> registeredTimers(QObject *object) const final;
118
119 int remainingTime(int timerId) final;
120
121 void wakeUp() override;
122 void interrupt() final;
123 void flush() override;
124
125protected:
126 QEventDispatcherUNIX(QEventDispatcherUNIXPrivate &dd, QObject *parent = nullptr);
127};
128
129class Q_CORE_EXPORT QEventDispatcherUNIXPrivate : public QAbstractEventDispatcherPrivate
130{
131 Q_DECLARE_PUBLIC(QEventDispatcherUNIX)
132
133public:
134 QEventDispatcherUNIXPrivate();
135 ~QEventDispatcherUNIXPrivate();
136
137 int activateTimers();
138
139 void markPendingSocketNotifiers();
140 int activateSocketNotifiers();
141 void setSocketNotifierPending(QSocketNotifier *notifier);
142
143 QThreadPipe threadPipe;
144 QVector<pollfd> pollfds;
145
146 QHash<int, QSocketNotifierSetUNIX> socketNotifiers;
147 QVector<QSocketNotifier *> pendingNotifiers;
148
149 QTimerInfoList timerList;
150 QAtomicInt interrupt; // bool
151};
152
153inline QSocketNotifierSetUNIX::QSocketNotifierSetUNIX() noexcept
154{
155 notifiers[0] = nullptr;
156 notifiers[1] = nullptr;
157 notifiers[2] = nullptr;
158}
159
160inline bool QSocketNotifierSetUNIX::isEmpty() const noexcept
161{
162 return !notifiers[0] && !notifiers[1] && !notifiers[2];
163}
164
165inline short QSocketNotifierSetUNIX::events() const noexcept
166{
167 short result = 0;
168
169 if (notifiers[0])
170 result |= POLLIN;
171
172 if (notifiers[1])
173 result |= POLLOUT;
174
175 if (notifiers[2])
176 result |= POLLPRI;
177
178 return result;
179}
180
181QT_END_NAMESPACE
182
183#endif // QEVENTDISPATCHER_UNIX_P_H
184

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