1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QEVENTLOOP_H
#define QEVENTLOOP_H
#include <QtCore/qobject.h>
#include <QtCore/qdeadlinetimer.h>
QT_BEGIN_NAMESPACE
class QEventLoopLocker;
class QEventLoopPrivate;
class Q_CORE_EXPORT QEventLoop : public QObject
{
Q_OBJECT
Q_DECLARE_PRIVATE(QEventLoop)
friend class QEventLoopLocker;
public:
explicit QEventLoop(QObject *parent = nullptr);
~QEventLoop();
enum ProcessEventsFlag {
AllEvents = 0x00,
ExcludeUserInputEvents = 0x01,
ExcludeSocketNotifiers = 0x02,
WaitForMoreEvents = 0x04,
X11ExcludeTimers = 0x08,
EventLoopExec = 0x20,
DialogExec = 0x40,
ApplicationExec = 0x80,
};
Q_DECLARE_FLAGS(ProcessEventsFlags, ProcessEventsFlag)
Q_FLAG(ProcessEventsFlags)
bool processEvents(ProcessEventsFlags flags = AllEvents);
void processEvents(ProcessEventsFlags flags, int maximumTime);
void processEvents(ProcessEventsFlags flags, QDeadlineTimer deadline);
int exec(ProcessEventsFlags flags = AllEvents);
bool isRunning() const;
void wakeUp();
bool event(QEvent *event) override;
public Q_SLOTS:
void exit(int returnCode = 0);
void quit();
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QEventLoop::ProcessEventsFlags)
class QEventLoopLockerPrivate;
class QEventLoopLocker
{
public:
Q_NODISCARD_CTOR Q_CORE_EXPORT QEventLoopLocker() noexcept;
Q_NODISCARD_CTOR Q_CORE_EXPORT explicit QEventLoopLocker(QEventLoop *loop) noexcept;
Q_NODISCARD_CTOR Q_CORE_EXPORT explicit QEventLoopLocker(QThread *thread) noexcept;
Q_CORE_EXPORT ~QEventLoopLocker();
Q_NODISCARD_CTOR QEventLoopLocker(QEventLoopLocker &&other) noexcept
: p{std::exchange(other.p, 0)} {}
QT_MOVE_ASSIGNMENT_OPERATOR_IMPL_VIA_MOVE_AND_SWAP(QEventLoopLocker)
void swap(QEventLoopLocker &other) noexcept { std::swap(p, other.p); }
friend void swap(QEventLoopLocker &lhs, QEventLoopLocker &rhs) noexcept { lhs.swap(rhs); }
private:
Q_DISABLE_COPY(QEventLoopLocker)
friend class QEventLoopLockerPrivate;
//
// Private implementation details.
// Do not call from public inline API!
//
enum class Type : quintptr {
EventLoop,
Thread,
Application,
};
explicit QEventLoopLocker(void *ptr, Type t) noexcept;
quintptr p;
static constexpr quintptr TypeMask = 0x3;
Type type() const { return Type(p & TypeMask); }
void *pointer() const { return reinterpret_cast<void *>(p & ~TypeMask); }
template <typename Func>
void visit(Func func) const;
};
QT_END_NAMESPACE
#endif // QEVENTLOOP_H
|
