blob: a996362bfd4f1691edb2570304d579667b4018ea (
plain)
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
|
// 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 QFUTURESYNCHRONIZER_H
#define QFUTURESYNCHRONIZER_H
#include <QtCore/qfuture.h>
QT_REQUIRE_CONFIG(future);
QT_BEGIN_NAMESPACE
template <typename T>
class QFutureSynchronizer
{
Q_DISABLE_COPY(QFutureSynchronizer)
public:
Q_NODISCARD_CTOR QFutureSynchronizer() : m_cancelOnWait(false) { }
Q_NODISCARD_CTOR_X("Use future.waitForFinished() instead.")
explicit QFutureSynchronizer(QFuture<T> future)
: m_cancelOnWait(false)
{ addFuture(std::move(future)); }
~QFutureSynchronizer() { waitForFinished(); }
void setFuture(QFuture<T> future)
{
waitForFinished();
m_futures.clear();
addFuture(std::move(future));
}
void addFuture(QFuture<T> future)
{
m_futures.append(std::move(future));
}
void waitForFinished()
{
if (m_cancelOnWait) {
for (int i = 0; i < m_futures.size(); ++i) {
m_futures[i].cancel();
}
}
for (int i = 0; i < m_futures.size(); ++i) {
m_futures[i].waitForFinished();
}
}
void clearFutures()
{
m_futures.clear();
}
QList<QFuture<T> > futures() const
{
return m_futures;
}
void setCancelOnWait(bool enabled)
{
m_cancelOnWait = enabled;
}
bool cancelOnWait() const
{
return m_cancelOnWait;
}
protected:
QList<QFuture<T>> m_futures;
bool m_cancelOnWait;
};
QT_END_NAMESPACE
#endif // QFUTURESYNCHRONIZER_H
|
