| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtCore module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
| ** accordance with the commercial license agreement provided with the |
| ** Software or, alternatively, in accordance with the terms contained in |
| ** a written agreement between you and The Qt Company. For licensing terms |
| ** and conditions see https://www.qt.io/terms-conditions. For further |
| ** information use the contact form at https://www.qt.io/contact-us. |
| ** |
| ** GNU Lesser General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU Lesser |
| ** General Public License version 3 as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.LGPL3 included in the |
| ** packaging of this file. Please review the following information to |
| ** ensure the GNU Lesser General Public License version 3 requirements |
| ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
| ** Qt Foundation. The licenses are as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 |
| ** included in the packaging of this file. Please review the following |
| ** information to ensure the GNU General Public License requirements will |
| ** be met: https://www.gnu.org/licenses/gpl-2.0.html and |
| ** https://www.gnu.org/licenses/gpl-3.0.html. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #ifndef QTHREADSTORAGE_H |
| #define QTHREADSTORAGE_H |
| |
| #include <QtCore/qglobal.h> |
| |
| #if QT_CONFIG(thread) |
| |
| QT_BEGIN_NAMESPACE |
| |
| |
| class Q_CORE_EXPORT QThreadStorageData |
| { |
| public: |
| explicit QThreadStorageData(void (*func)(void *)); |
| ~QThreadStorageData(); |
| |
| void** get() const; |
| void** set(void* p); |
| |
| static void finish(void**); |
| int id; |
| }; |
| |
| #if !defined(QT_MOC_CPP) |
| // MOC_SKIP_BEGIN |
| |
| // pointer specialization |
| template <typename T> |
| inline |
| T *&qThreadStorage_localData(QThreadStorageData &d, T **) |
| { |
| void **v = d.get(); |
| if (!v) v = d.set(nullptr); |
| return *(reinterpret_cast<T**>(v)); |
| } |
| |
| template <typename T> |
| inline |
| T *qThreadStorage_localData_const(const QThreadStorageData &d, T **) |
| { |
| void **v = d.get(); |
| return v ? *(reinterpret_cast<T**>(v)) : 0; |
| } |
| |
| template <typename T> |
| inline |
| void qThreadStorage_setLocalData(QThreadStorageData &d, T **t) |
| { (void) d.set(*t); } |
| |
| template <typename T> |
| inline |
| void qThreadStorage_deleteData(void *d, T **) |
| { delete static_cast<T *>(d); } |
| |
| // value-based specialization |
| template <typename T> |
| inline |
| T &qThreadStorage_localData(QThreadStorageData &d, T *) |
| { |
| void **v = d.get(); |
| if (!v) v = d.set(new T()); |
| return *(reinterpret_cast<T*>(*v)); |
| } |
| |
| template <typename T> |
| inline |
| T qThreadStorage_localData_const(const QThreadStorageData &d, T *) |
| { |
| void **v = d.get(); |
| return v ? *(reinterpret_cast<T*>(*v)) : T(); |
| } |
| |
| template <typename T> |
| inline |
| void qThreadStorage_setLocalData(QThreadStorageData &d, T *t) |
| { (void) d.set(new T(*t)); } |
| |
| template <typename T> |
| inline |
| void qThreadStorage_deleteData(void *d, T *) |
| { delete static_cast<T *>(d); } |
| |
| |
| // MOC_SKIP_END |
| #endif |
| |
| template <class T> |
| class QThreadStorage |
| { |
| private: |
| QThreadStorageData d; |
| |
| Q_DISABLE_COPY(QThreadStorage) |
| |
| static inline void deleteData(void *x) |
| { qThreadStorage_deleteData(x, reinterpret_cast<T*>(0)); } |
| |
| public: |
| inline QThreadStorage() : d(deleteData) { } |
| inline ~QThreadStorage() { } |
| |
| inline bool hasLocalData() const |
| { return d.get() != nullptr; } |
| |
| inline T& localData() |
| { return qThreadStorage_localData(d, reinterpret_cast<T*>(0)); } |
| inline T localData() const |
| { return qThreadStorage_localData_const(d, reinterpret_cast<T*>(0)); } |
| |
| inline void setLocalData(T t) |
| { qThreadStorage_setLocalData(d, &t); } |
| }; |
| |
| QT_END_NAMESPACE |
| |
| #else // !QT_CONFIG(thread) |
| |
| #include <QtCore/qscopedpointer.h> |
| |
| #include <type_traits> |
| |
| template <typename T, typename U> |
| inline bool qThreadStorage_hasLocalData(const QScopedPointer<T, U> &data) |
| { |
| return !!data; |
| } |
| |
| template <typename T, typename U> |
| inline bool qThreadStorage_hasLocalData(const QScopedPointer<T*, U> &data) |
| { |
| return !!data ? *data != nullptr : false; |
| } |
| |
| template <typename T> |
| inline void qThreadStorage_deleteLocalData(T *t) |
| { |
| delete t; |
| } |
| |
| template <typename T> |
| inline void qThreadStorage_deleteLocalData(T **t) |
| { |
| delete *t; |
| delete t; |
| } |
| |
| template <class T> |
| class QThreadStorage |
| { |
| private: |
| struct ScopedPointerThreadStorageDeleter |
| { |
| static inline void cleanup(T *t) |
| { |
| if (t == nullptr) |
| return; |
| qThreadStorage_deleteLocalData(t); |
| } |
| }; |
| QScopedPointer<T, ScopedPointerThreadStorageDeleter> data; |
| |
| public: |
| QThreadStorage() = default; |
| ~QThreadStorage() = default; |
| QThreadStorage(const QThreadStorage &rhs) = delete; |
| QThreadStorage &operator=(const QThreadStorage &rhs) = delete; |
| |
| inline bool hasLocalData() const |
| { |
| return qThreadStorage_hasLocalData(data); |
| } |
| |
| inline T& localData() |
| { |
| if (!data) |
| data.reset(new T()); |
| return *data; |
| } |
| |
| inline T localData() const |
| { |
| return !!data ? *data : T(); |
| } |
| |
| inline void setLocalData(T t) |
| { |
| data.reset(new T(t)); |
| } |
| }; |
| |
| #endif // QT_CONFIG(thread) |
| |
| #endif // QTHREADSTORAGE_H |