QtPrivate::RefCount Class Reference

\inmodule QtCore More...

#include <qrefcount.h>

Collaboration diagram for QtPrivate::RefCount:

Public Member Functions
bool	ref () noexcept
bool	deref () noexcept
bool	isStatic () const noexcept
bool	isShared () const noexcept
void	initializeOwned () noexcept
void	initializeUnsharable () noexcept

Public Attributes
QBasicAtomicInt	atomic

Detailed Description

\inmodule QtCore

QRefCount implements atomic ref counting for Qt's shared classes. It behaves very similar to QAtomicInt, but ignores negative ref counts.

This can be used to allow to implement e.g. const read-only QStringData objects. QString::shared_null and the qs(...) macro make use of this feature.

Definition at line 15 of file qrefcount.h.

Member Function Documentation

deref()

bool QtPrivate::RefCount::deref ( )

inlinenoexcept

Definition at line 25 of file qrefcount.h.

References atomic, QBasicAtomicInteger< T >::deref(), and QBasicAtomicInteger< T >::loadRelaxed().

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initializeOwned()

void QtPrivate::RefCount::initializeOwned ( )

inlinenoexcept

Definition at line 44 of file qrefcount.h.

References atomic, and QBasicAtomicInteger< T >::storeRelaxed().

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initializeUnsharable()

void QtPrivate::RefCount::initializeUnsharable ( )

inlinenoexcept

Definition at line 45 of file qrefcount.h.

References atomic, and QBasicAtomicInteger< T >::storeRelaxed().

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isShared()

bool QtPrivate::RefCount::isShared ( ) const

inlinenoexcept

Definition at line 38 of file qrefcount.h.

References atomic, and QBasicAtomicInteger< T >::loadRelaxed().

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isStatic()

bool QtPrivate::RefCount::isStatic ( ) const

inlinenoexcept

Definition at line 32 of file qrefcount.h.

References atomic, and QBasicAtomicInteger< T >::loadRelaxed().

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ref()

bool QtPrivate::RefCount::ref ( )

inlinenoexcept

Definition at line 18 of file qrefcount.h.

References atomic, QBasicAtomicInteger< T >::loadRelaxed(), and QBasicAtomicInteger< T >::ref().

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Member Data Documentation

atomic

QBasicAtomicInt QtPrivate::RefCount::atomic

Definition at line 47 of file qrefcount.h.

Referenced by deref(), initializeOwned(), initializeUnsharable(), isShared(), isStatic(), and ref().

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The documentation for this class was generated from the following file:

• qtbase/src/corelib/tools/qrefcount.h