QArrayData Struct Reference

#include <qarraydata.h>

Inheritance diagram for QArrayData:

Collaboration diagram for QArrayData:

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 () noexcept
qsizetype	detachCapacity (qsizetype newSize) const noexcept

Static Public Member Functions
static Q_DECL_MALLOCLIKE Q_CORE_EXPORT void *	allocate (QArrayData **pdata, qsizetype objectSize, qsizetype alignment, qsizetype capacity, AllocationOption option=QArrayData::KeepSize) noexcept
static Q_DECL_MALLOCLIKE Q_CORE_EXPORT void *	allocate1 (QArrayData **pdata, qsizetype capacity, AllocationOption option=QArrayData::KeepSize) noexcept
static Q_DECL_MALLOCLIKE Q_CORE_EXPORT void *	allocate2 (QArrayData **pdata, qsizetype capacity, AllocationOption option=QArrayData::KeepSize) noexcept
static Q_CORE_EXPORT std::pair< 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 24 of file qarraydata.h.

Member Enumeration Documentation

AllocationOption

enum QArrayData::AllocationOption

Enumerator
Grow
KeepSize

Definition at line 26 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 36 of file qarraydata.h.

GrowthPosition

enum QArrayData::GrowthPosition

Enumerator
GrowsAtEnd
GrowsAtBeginning

Definition at line 31 of file qarraydata.h.

Member Function Documentation

allocate()

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

staticnoexcept

Definition at line 193 of file qarraydata.cpp.

References alignment, allocateHelper(), capacity, and Q_ASSERT.

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

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allocate1()

void * QArrayData::allocate1 ( QArrayData ** pdata, qsizetype capacity, AllocationOption option = QArrayData::KeepSize )

staticnoexcept

Definition at line 207 of file qarraydata.cpp.

References allocateHelper(), capacity, and Q_ASSERT.

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allocate2()

void * QArrayData::allocate2 ( QArrayData ** pdata, qsizetype capacity, AllocationOption option = QArrayData::KeepSize )

staticnoexcept

Definition at line 216 of file qarraydata.cpp.

References allocateHelper(), capacity, and Q_ASSERT.

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allocatedCapacity()

qsizetype QArrayData::allocatedCapacity ( )

inlinenoexcept

Definition at line 46 of file qarraydata.h.

References alloc.

constAllocatedCapacity()

qsizetype QArrayData::constAllocatedCapacity ( ) const

inlinenoexcept

Definition at line 51 of file qarraydata.h.

References alloc.

Referenced by detachCapacity().

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deallocate()

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

staticnoexcept

Definition at line 254 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 64 of file qarraydata.h.

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

Referenced by QStringHashNode::~QStringHashNode().

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detachCapacity()

qsizetype QArrayData::detachCapacity ( qsizetype newSize ) const

inlinenoexcept

Definition at line 82 of file qarraydata.h.

References CapacityReserved, and constAllocatedCapacity().

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isShared()

bool QArrayData::isShared ( ) const

inlinenoexcept

Definition at line 69 of file qarraydata.h.

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

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needsDetach()

bool QArrayData::needsDetach ( )

inlinenoexcept

Definition at line 77 of file qarraydata.h.

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

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reallocateUnaligned()

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

staticnoexcept

Definition at line 226 of file qarraydata.cpp.

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

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

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ref()

bool QArrayData::ref ( )

inlinenoexcept

Returns true if sharing took place.

Definition at line 57 of file qarraydata.h.

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

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

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Member Data Documentation

alloc

qsizetype QArrayData::alloc

Definition at line 44 of file qarraydata.h.

Referenced by allocatedCapacity(), and constAllocatedCapacity().

flags

ArrayOptions QArrayData::flags

Definition at line 43 of file qarraydata.h.

ref_

QBasicAtomicInt QArrayData::ref_

Definition at line 42 of file qarraydata.h.

Referenced by deref(), isShared(), needsDetach(), and ref().

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

• qtbase/src/corelib/tools/qarraydata.h (7ce6920aacfcba485cd8017e01c6aeb324292e75)
• qtbase/src/corelib/tools/qarraydata.cpp (95c7f88132646489bc17b8ea32facd76a19e19fa)