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| ** This file is part of the QtCore module of the Qt Toolkit. |
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| ** $QT_BEGIN_LICENSE:LGPL$ |
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| ** |
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| ** Public license version 3 or any later version approved by the KDE Free |
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| ****************************************************************************/ |
| |
| #ifndef QSHAREDMEMORY_H |
| #define QSHAREDMEMORY_H |
| |
| #include <QtCore/qglobal.h> |
| #ifndef QT_NO_QOBJECT |
| # include <QtCore/qobject.h> |
| #else |
| # include <QtCore/qobjectdefs.h> |
| # include <QtCore/qscopedpointer.h> |
| # include <QtCore/qstring.h> |
| #endif |
| QT_BEGIN_NAMESPACE |
| |
| |
| #ifndef QT_NO_SHAREDMEMORY |
| |
| class QSharedMemoryPrivate; |
| |
| class Q_CORE_EXPORT QSharedMemory |
| #ifndef QT_NO_QOBJECT |
| : public QObject |
| #endif |
| { |
| #ifndef QT_NO_QOBJECT |
| Q_OBJECT |
| #endif |
| Q_DECLARE_PRIVATE(QSharedMemory) |
| |
| public: |
| enum AccessMode |
| { |
| ReadOnly, |
| ReadWrite |
| }; |
| |
| enum SharedMemoryError |
| { |
| NoError, |
| PermissionDenied, |
| InvalidSize, |
| KeyError, |
| AlreadyExists, |
| NotFound, |
| LockError, |
| OutOfResources, |
| UnknownError |
| }; |
| |
| #ifndef QT_NO_QOBJECT |
| QSharedMemory(QObject *parent = nullptr); |
| QSharedMemory(const QString &key, QObject *parent = nullptr); |
| #else |
| QSharedMemory(); |
| QSharedMemory(const QString &key); |
| static QString tr(const char * str) |
| { |
| return QString::fromLatin1(str); |
| } |
| #endif |
| ~QSharedMemory(); |
| |
| void setKey(const QString &key); |
| QString key() const; |
| void setNativeKey(const QString &key); |
| QString nativeKey() const; |
| |
| bool create(int size, AccessMode mode = ReadWrite); |
| int size() const; |
| |
| bool attach(AccessMode mode = ReadWrite); |
| bool isAttached() const; |
| bool detach(); |
| |
| void *data(); |
| const void* constData() const; |
| const void *data() const; |
| |
| #ifndef QT_NO_SYSTEMSEMAPHORE |
| bool lock(); |
| bool unlock(); |
| #endif |
| |
| SharedMemoryError error() const; |
| QString errorString() const; |
| |
| private: |
| Q_DISABLE_COPY(QSharedMemory) |
| #ifdef QT_NO_QOBJECT |
| QScopedPointer<QSharedMemoryPrivate> d_ptr; |
| #endif |
| }; |
| |
| #endif // QT_NO_SHAREDMEMORY |
| |
| QT_END_NAMESPACE |
| |
| #endif // QSHAREDMEMORY_H |
| |