(2ebd327712b23b1ec136bc613ef60076cbc1b803)

#include <QtCore/qalloc.h>
#include <QtCore/qarraydata.h>
#include <QtCore/private/qnumeric_p.h>
#include <QtCore/private/qtools_p.h>
#include <QtCore/qmath.h>
#include <QtCore/qbytearray.h>
#include <QtCore/qstring.h>
#include <stdlib.h>

Include dependency graph for qarraydata.cpp:

Go to the source code of this file.

Classes
struct	AlignedQArrayData

Functions
QT_BEGIN_NAMESPACE qsizetype	qCalculateBlockSize (qsizetype elementCount, qsizetype elementSize, qsizetype headerSize) noexcept
CalculateGrowingBlockSizeResult	qCalculateGrowingBlockSize (qsizetype elementCount, qsizetype elementSize, qsizetype headerSize) noexcept
static qsizetype	calculateHeaderSize (qsizetype alignment)
static CalculateGrowingBlockSizeResult	calculateBlockSize (qsizetype capacity, qsizetype objectSize, qsizetype headerSize, QArrayData::AllocationOption option)
static void *	allocateHelper (QArrayData **dptr, qsizetype objectSize, qsizetype alignment, qsizetype capacity, QArrayData::AllocationOption option) noexcept

Function Documentation

◆ allocateHelper()

void * allocateHelper	(	QArrayData **	dptr,
		qsizetype	objectSize,
		qsizetype	alignment,
		qsizetype	capacity,
		QArrayData::AllocationOption	option )

inlinestaticnoexcept

Definition at line 161 of file qarraydata.cpp.

◆ calculateBlockSize()

CalculateGrowingBlockSizeResult calculateBlockSize	(	qsizetype	capacity,
		qsizetype	objectSize,
		qsizetype	headerSize,
		QArrayData::AllocationOption	option )

inlinestatic

Definition at line 142 of file qarraydata.cpp.

◆ calculateHeaderSize()

qsizetype calculateHeaderSize ( qsizetype alignment )

static

Definition at line 116 of file qarraydata.cpp.

◆ qCalculateBlockSize()

QT_BEGIN_NAMESPACE qsizetype qCalculateBlockSize	(	qsizetype	elementCount,
		qsizetype	elementSize,
		qsizetype	headerSize )

noexcept

Since: 5.7

Returns the memory block size for a container containing elementCount elements, each of elementSize bytes, plus a header of headerSize bytes. That is, this function returns {elementCount * elementSize + headerSize}

but unlike the simple calculation, it checks for overflows during the multiplication and the addition.

Both elementCount and headerSize can be zero, but elementSize cannot.

This function returns -1 on overflow or if the memory block size would not fit a qsizetype.

Definition at line 53 of file qarraydata.cpp.

◆ qCalculateGrowingBlockSize()

CalculateGrowingBlockSizeResult qCalculateGrowingBlockSize	(	qsizetype	elementCount,
		qsizetype	elementSize,
		qsizetype	headerSize )