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1/*
2 * Copyright 2014 Daniel Vrátil <dvratil@redhat.com>
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of
7 * the License or (at your option) version 3 or any later version
8 * accepted by the membership of KDE e.V. (or its successor approved
9 * by the membership of KDE e.V.), which shall act as a proxy
10 * defined in Section 14 of version 3 of the license.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
19 *
20 */
21
22#ifndef FUTURE_H
23#define FUTURE_H
24
25class QEventLoop;
26
27namespace Async {
28
29class FutureBase
30{
31public:
32 FutureBase();
33 FutureBase(const FutureBase &other);
34 virtual ~FutureBase();
35
36 void setFinished();
37 bool isFinished() const;
38 void waitForFinished();
39
40protected:
41 bool mFinished;
42 QEventLoop *mWaitLoop;
43};
44
45template<typename T>
46class Future : public FutureBase
47{
48public:
49 Future()
50 : FutureBase()
51 {}
52
53 Future(const Future<T> &other)
54 : FutureBase(other)
55 , mValue(other.mValue)
56 {}
57
58 Future(const T &val)
59 : FutureBase()
60 , mValue(val)
61 {}
62
63 void setValue(const T &val)
64 {
65 mValue = val;
66 }
67
68 T value() const
69 {
70 return mValue;
71 }
72
73private:
74 T mValue;
75};
76
77template<>
78class Future<void> : public FutureBase
79{
80public:
81 Future()
82 : FutureBase()
83 {}
84
85 Future(const Future<void> &other)
86 : FutureBase(other)
87 {}
88};
89
90} // namespace Async
91
92#endif // FUTURE_H