diff options
author | Morten Johan Sørvig <morten.sorvig@qt.io> | 2018-05-31 10:36:11 +0200 |
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committer | Lorn Potter <lorn.potter@gmail.com> | 2018-08-17 00:34:33 +0000 |
commit | 815153d4a453855bb528f0fa9cb7e5a77d589a11 (patch) | |
tree | a6719e8ce61888654250a716d09aaa4fc1215111 /src/corelib | |
parent | 07f6eff58d5ffd8d148cd848141be1ba11c6c5da (diff) |
Add QThreadStorage stub implementation
Add implementation for the no-thread configuration:
Assume access will only happen from one thread and
use a QScopedPointer to hold the data.
Unlike the real implementation this version will
delete the stored data on destruction, as opposed
to on QApplication destruction.
Change-Id: I9d8e89e7da18f967f463e2db7b50549c962acc84
Reviewed-by: Lorn Potter <lorn.potter@gmail.com>
Diffstat (limited to 'src/corelib')
-rw-r--r-- | src/corelib/thread/qthreadstorage.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/src/corelib/thread/qthreadstorage.h b/src/corelib/thread/qthreadstorage.h index fed41a0760..9a91883de8 100644 --- a/src/corelib/thread/qthreadstorage.h +++ b/src/corelib/thread/qthreadstorage.h @@ -152,6 +152,81 @@ public: QT_END_NAMESPACE +#else // !QT_NO_THREAD + +#include <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_NO_THREAD #endif // QTHREADSTORAGE_H |