Qt 6.x
The Qt SDK
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Public Types | Public Member Functions | Static Public Member Functions | Public Attributes | List of all members
QArrayData Struct Reference

#include <qarraydata.h>

+ Inheritance diagram for QArrayData:
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Public Types

enum  AllocationOption { Grow , KeepSize }
 
enum  GrowthPosition { GrowsAtEnd , GrowsAtBeginning }
 
enum  ArrayOption { ArrayOptionDefault = 0 , CapacityReserved = 0x1 }
 

Public Member Functions

qsizetype allocatedCapacity () noexcept
 
qsizetype constAllocatedCapacity () const noexcept
 
bool ref () noexcept
 Returns true if sharing took place.
 
bool deref () noexcept
 Returns false if deallocation is necessary.
 
bool isShared () const noexcept
 
bool needsDetach () const noexcept
 
qsizetype detachCapacity (qsizetype newSize) const noexcept
 

Static Public Member Functions

static Q_CORE_EXPORT void * allocate (QArrayData **pdata, qsizetype objectSize, qsizetype alignment, qsizetype capacity, AllocationOption option=QArrayData::KeepSize) noexcept
 
static Q_CORE_EXPORT QPair< QArrayData *, void * > reallocateUnaligned (QArrayData *data, void *dataPointer, qsizetype objectSize, qsizetype newCapacity, AllocationOption option) noexcept
 
static Q_CORE_EXPORT void deallocate (QArrayData *data, qsizetype objectSize, qsizetype alignment) noexcept
 

Public Attributes

QBasicAtomicInt ref_
 
ArrayOptions flags
 
qsizetype alloc
 

Detailed Description

Definition at line 16 of file qarraydata.h.

Member Enumeration Documentation

◆ AllocationOption

enum QArrayData::AllocationOption
Enumerator
Grow 
KeepSize 

Definition at line 18 of file qarraydata.h.

◆ ArrayOption

enum QArrayData::ArrayOption
Enumerator
ArrayOptionDefault 
CapacityReserved 

the capacity was reserved by the user, try to keep it

Definition at line 28 of file qarraydata.h.

◆ GrowthPosition

enum QArrayData::GrowthPosition
Enumerator
GrowsAtEnd 
GrowsAtBeginning 

Definition at line 23 of file qarraydata.h.

Member Function Documentation

◆ allocate()

void * QArrayData::allocate ( QArrayData **  pdata,
qsizetype  objectSize,
qsizetype  alignment,
qsizetype  capacity,
QArrayData::AllocationOption  option = QArrayData::KeepSize 
)
staticnoexcept

Definition at line 160 of file qarraydata.cpp.

References alignment, allocateData(), calculateBlockSize(), capacity, QTypedArrayData< T >::dataStart(), header(), headerSize, Q_ASSERT, Q_UNLIKELY, and reserveExtraBytes().

Referenced by QTypedArrayData< T >::allocate().

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◆ allocatedCapacity()

qsizetype QArrayData::allocatedCapacity ( )
inlinenoexcept

Definition at line 38 of file qarraydata.h.

References alloc.

Referenced by QArrayDataPointer< T >::allocatedCapacity().

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◆ constAllocatedCapacity()

qsizetype QArrayData::constAllocatedCapacity ( ) const
inlinenoexcept

Definition at line 43 of file qarraydata.h.

References alloc.

Referenced by QArrayDataPointer< T >::constAllocatedCapacity(), detachCapacity(), and QArrayDataPointer< T >::freeSpaceAtEnd().

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◆ deallocate()

void QArrayData::deallocate ( QArrayData *  data,
qsizetype  objectSize,
qsizetype  alignment 
)
staticnoexcept

Definition at line 234 of file qarraydata.cpp.

References alignment, Q_ASSERT, and Q_UNUSED.

Referenced by QTypedArrayData< T >::deallocate().

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◆ deref()

bool QArrayData::deref ( )
inlinenoexcept

Returns false if deallocation is necessary.

Definition at line 56 of file qarraydata.h.

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

Referenced by QStringHashNode::~QStringHashNode(), and QArrayDataPointer< T >::deref().

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◆ detachCapacity()

qsizetype QArrayData::detachCapacity ( qsizetype  newSize) const
inlinenoexcept

Definition at line 74 of file qarraydata.h.

References CapacityReserved, and constAllocatedCapacity().

Referenced by QArrayDataPointer< T >::detachCapacity().

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◆ isShared()

bool QArrayData::isShared ( ) const
inlinenoexcept

Definition at line 61 of file qarraydata.h.

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

Referenced by QArrayDataPointer< T >::isShared(), and QArrayDataPointer< T >::reinterpreted().

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◆ needsDetach()

bool QArrayData::needsDetach ( ) const
inlinenoexcept

Definition at line 69 of file qarraydata.h.

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

Referenced by QArrayDataPointer< T >::needsDetach().

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◆ reallocateUnaligned()

QPair< QArrayData *, void * > QArrayData::reallocateUnaligned ( QArrayData *  data,
void *  dataPointer,
qsizetype  objectSize,
qsizetype  newCapacity,
AllocationOption  option 
)
staticnoexcept

Definition at line 204 of file qarraydata.cpp.

References calculateBlockSize(), capacity, header(), headerSize, Q_ASSERT, Q_UNLIKELY, qMakePair(), and reserveExtraBytes().

Referenced by QTypedArrayData< T >::reallocateUnaligned().

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◆ ref()

bool QArrayData::ref ( )
inlinenoexcept

Returns true if sharing took place.

Definition at line 49 of file qarraydata.h.

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

Referenced by QStringHashNode::QStringHashNode(), QStringHashNode::QStringHashNode(), QStringHash< T >::initializeNode(), QStringHashNode::key(), QArrayDataPointer< T >::ref(), and QStringHash< T >::takeNode().

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Member Data Documentation

◆ alloc

qsizetype QArrayData::alloc

Definition at line 36 of file qarraydata.h.

Referenced by allocatedCapacity(), constAllocatedCapacity(), and QArrayDataPointer< T >::reinterpreted().

◆ flags

ArrayOptions QArrayData::flags

Definition at line 35 of file qarraydata.h.

Referenced by QArrayDataPointer< T >::clearFlag(), QArrayDataPointer< T >::flags(), and QArrayDataPointer< T >::setFlag().

◆ ref_

QBasicAtomicInt QArrayData::ref_

Definition at line 34 of file qarraydata.h.

Referenced by deref(), QtPrivate::QGenericArrayOps< T >::destroyAll(), QtPrivate::QPodArrayOps< T >::destroyAll(), isShared(), needsDetach(), and ref().

The documentation for this struct was generated from the following files: