Qt 4.8
qsharedmemory.h
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41 
42 #ifndef QSHAREDMEMORY_H
43 #define QSHAREDMEMORY_H
44 
45 #include <QtCore/qobject.h>
46 
48 
50 
51 QT_MODULE(Core)
52 
53 #ifndef QT_NO_SHAREDMEMORY
54 
56 
58 {
59  Q_OBJECT
61 
62 public:
64  {
66  ReadWrite
67  };
68 
70  {
79  UnknownError
80  };
81 
82  QSharedMemory(QObject *parent = 0);
83  QSharedMemory(const QString &key, QObject *parent = 0);
84  ~QSharedMemory();
85 
86  void setKey(const QString &key);
87  QString key() const;
88  void setNativeKey(const QString &key);
89  QString nativeKey() const;
90 
91  bool create(int size, AccessMode mode = ReadWrite);
92  int size() const;
93 
94  bool attach(AccessMode mode = ReadWrite);
95  bool isAttached() const;
96  bool detach();
97 
98  void *data();
99  const void* constData() const;
100  const void *data() const;
101 
102 #ifndef QT_NO_SYSTEMSEMAPHORE
103  bool lock();
104  bool unlock();
105 #endif
106 
107  SharedMemoryError error() const;
108  QString errorString() const;
109 
110 private:
112 };
113 
114 #endif // QT_NO_SHAREDMEMORY
115 
117 
119 
120 #endif // QSHAREDMEMORY_H
121 
#define QT_END_NAMESPACE
This macro expands to.
Definition: qglobal.h:90
#define QT_MODULE(x)
Definition: qglobal.h:2783
#define QT_BEGIN_HEADER
Definition: qglobal.h:136
#define error(msg)
static Expression::Ptr create(Expression *const expr, const YYLTYPE &sourceLocator, const ParserContext *const parseInfo)
#define Q_DISABLE_COPY(Class)
Disables the use of copy constructors and assignment operators for the given Class.
Definition: qglobal.h:2523
The QString class provides a Unicode character string.
Definition: qstring.h:83
The QObject class is the base class of all Qt objects.
Definition: qobject.h:111
Q_GUI_EXPORT QString errorString(EGLint code=eglGetError())
Definition: qegl.cpp:743
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
static const char * data(const QByteArray &arr)
#define Q_OBJECT
Definition: qobjectdefs.h:157
#define Q_CORE_EXPORT
Definition: qglobal.h:1449
int key
static QReadWriteLock lock
Definition: proxyconf.cpp:399
The QSharedMemory class provides access to a shared memory segment.
Definition: qsharedmemory.h:57
#define Q_DECLARE_PRIVATE(Class)
Definition: qglobal.h:2467
#define QT_END_HEADER
Definition: qglobal.h:137