1 | /**************************************************************************** |
2 | ** |
3 | ** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies). |
4 | ** Contact: http://www.qt-project.org/legal |
5 | ** |
6 | ** This file is part of the QtCore module of the Qt Toolkit. |
7 | ** |
8 | ** $QT_BEGIN_LICENSE:LGPL$ |
9 | ** Commercial License Usage |
10 | ** Licensees holding valid commercial Qt licenses may use this file in |
11 | ** accordance with the commercial license agreement provided with the |
12 | ** Software or, alternatively, in accordance with the terms contained in |
13 | ** a written agreement between you and Digia. For licensing terms and |
14 | ** conditions see http://qt.digia.com/licensing. For further information |
15 | ** use the contact form at http://qt.digia.com/contact-us. |
16 | ** |
17 | ** GNU Lesser General Public License Usage |
18 | ** Alternatively, this file may be used under the terms of the GNU Lesser |
19 | ** General Public License version 2.1 as published by the Free Software |
20 | ** Foundation and appearing in the file LICENSE.LGPL included in the |
21 | ** packaging of this file. Please review the following information to |
22 | ** ensure the GNU Lesser General Public License version 2.1 requirements |
23 | ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
24 | ** |
25 | ** In addition, as a special exception, Digia gives you certain additional |
26 | ** rights. These rights are described in the Digia Qt LGPL Exception |
27 | ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
28 | ** |
29 | ** GNU General Public License Usage |
30 | ** Alternatively, this file may be used under the terms of the GNU |
31 | ** General Public License version 3.0 as published by the Free Software |
32 | ** Foundation and appearing in the file LICENSE.GPL included in the |
33 | ** packaging of this file. Please review the following information to |
34 | ** ensure the GNU General Public License version 3.0 requirements will be |
35 | ** met: http://www.gnu.org/copyleft/gpl.html. |
36 | ** |
37 | ** |
38 | ** $QT_END_LICENSE$ |
39 | ** |
40 | ****************************************************************************/ |
41 | |
42 | #ifndef QTHREADSTORAGE_H |
43 | #define QTHREADSTORAGE_H |
44 | |
45 | #include <QtCore/qglobal.h> |
46 | |
47 | #ifndef QT_NO_THREAD |
48 | |
49 | QT_BEGIN_HEADER |
50 | |
51 | QT_BEGIN_NAMESPACE |
52 | |
53 | QT_MODULE(Core) |
54 | |
55 | class Q_CORE_EXPORT QThreadStorageData |
56 | { |
57 | public: |
58 | explicit QThreadStorageData(void (*func)(void *)); |
59 | ~QThreadStorageData(); |
60 | |
61 | void** get() const; |
62 | void** set(void* p); |
63 | |
64 | static void finish(void**); |
65 | int id; |
66 | }; |
67 | |
68 | #if !defined(QT_MOC_CPP) |
69 | // MOC_SKIP_BEGIN |
70 | |
71 | // pointer specialization |
72 | template <typename T> |
73 | inline |
74 | T *&qThreadStorage_localData(QThreadStorageData &d, T **) |
75 | { |
76 | void **v = d.get(); |
77 | if (!v) v = d.set(0); |
78 | return *(reinterpret_cast<T**>(v)); |
79 | } |
80 | |
81 | template <typename T> |
82 | inline |
83 | T *qThreadStorage_localData_const(const QThreadStorageData &d, T **) |
84 | { |
85 | void **v = d.get(); |
86 | return v ? *(reinterpret_cast<T**>(v)) : 0; |
87 | } |
88 | |
89 | template <typename T> |
90 | inline |
91 | void qThreadStorage_setLocalData(QThreadStorageData &d, T **t) |
92 | { (void) d.set(*t); } |
93 | |
94 | template <typename T> |
95 | inline |
96 | void qThreadStorage_deleteData(void *d, T **) |
97 | { delete static_cast<T *>(d); } |
98 | |
99 | // value-based specialization |
100 | template <typename T> |
101 | inline |
102 | T &qThreadStorage_localData(QThreadStorageData &d, T *) |
103 | { |
104 | void **v = d.get(); |
105 | if (!v) v = d.set(new T()); |
106 | return *(reinterpret_cast<T*>(*v)); |
107 | } |
108 | |
109 | template <typename T> |
110 | inline |
111 | T qThreadStorage_localData_const(const QThreadStorageData &d, T *) |
112 | { |
113 | void **v = d.get(); |
114 | return v ? *(reinterpret_cast<T*>(*v)) : T(); |
115 | } |
116 | |
117 | template <typename T> |
118 | inline |
119 | void qThreadStorage_setLocalData(QThreadStorageData &d, T *t) |
120 | { (void) d.set(new T(*t)); } |
121 | |
122 | template <typename T> |
123 | inline |
124 | void qThreadStorage_deleteData(void *d, T *) |
125 | { delete static_cast<T *>(d); } |
126 | |
127 | |
128 | // MOC_SKIP_END |
129 | #endif |
130 | |
131 | template <class T> |
132 | class QThreadStorage |
133 | { |
134 | private: |
135 | QThreadStorageData d; |
136 | |
137 | Q_DISABLE_COPY(QThreadStorage) |
138 | |
139 | static inline void deleteData(void *x) |
140 | { qThreadStorage_deleteData(x, reinterpret_cast<T*>(0)); } |
141 | |
142 | public: |
143 | inline QThreadStorage() : d(deleteData) { } |
144 | inline ~QThreadStorage() { } |
145 | |
146 | inline bool hasLocalData() const |
147 | { return d.get() != 0; } |
148 | |
149 | inline T& localData() |
150 | { return qThreadStorage_localData(d, reinterpret_cast<T*>(0)); } |
151 | inline T localData() const |
152 | { return qThreadStorage_localData_const(d, reinterpret_cast<T*>(0)); } |
153 | |
154 | inline void setLocalData(T t) |
155 | { qThreadStorage_setLocalData(d, &t); } |
156 | }; |
157 | |
158 | QT_END_NAMESPACE |
159 | |
160 | QT_END_HEADER |
161 | |
162 | #endif // QT_NO_THREAD |
163 | |
164 | #endif // QTHREADSTORAGE_H |
165 | |