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Extended QSharedPointer and QWeakPointer with isShared and needsDetach #112

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Extended QSharedPointer and QWeakPointer with isShared and needsDetach #112

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18 changes: 18 additions & 0 deletions src/corelib/tools/qsharedpointer_impl.h
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Original file line number Diff line number Diff line change
Expand Up @@ -114,6 +114,14 @@ namespace QtSharedPointer {

void destroy() { destroyer(this); }

bool isShared() const noexcept {
return strongref.loadRelaxed() != 1;
}

bool needsDetach() const noexcept {
return strongref.loadRelaxed() > 1;
}

#ifndef QT_NO_QOBJECT
Q_CORE_EXPORT static ExternalRefCountData *getAndRef(const QObject *);
QT6_ONLY(
Expand Down Expand Up @@ -463,6 +471,11 @@ template <class T> class QSharedPointer
size_t owner_hash() const noexcept
{ return std::hash<Data *>()(d); }

bool isShared() const noexcept
{ return !d || d->isShared(); }
bool needsDetach() const noexcept
{ return !d || d->needsDetach(); }

private:
Q_NODISCARD_CTOR
explicit QSharedPointer(Qt::Initialization) {}
Expand Down Expand Up @@ -717,6 +730,11 @@ class QWeakPointer
size_t owner_hash() const noexcept
{ return std::hash<Data *>()(d); }

bool isShared() const noexcept
{ return !d || d->isShared(); }
bool needsDetach() const noexcept
{ return !d || d->needsDetach(); }

private:
friend struct QtPrivate::EnableInternalData;
template <class X> friend class QSharedPointer;
Expand Down