NCollection_Buffer Class Reference

Low-level buffer object. More...

#include <NCollection_Buffer.hxx>

Inheritance diagram for NCollection_Buffer:

Public Member Functions
	NCollection_Buffer (const occ::handle< NCollection_BaseAllocator > &theAlloc, const size_t theSize=0, uint8_t *theData=nullptr)
	Default constructor. When theData is NULL but theSize is not 0 than buffer of specified size will be allocated.
	~NCollection_Buffer () override
	Destructor.
const uint8_t *	Data () const noexcept
uint8_t *	ChangeData () noexcept
bool	IsEmpty () const noexcept
size_t	Size () const noexcept
	Return buffer length in bytes.
const occ::handle< NCollection_BaseAllocator > &	Allocator () const noexcept
void	SetAllocator (const occ::handle< NCollection_BaseAllocator > &theAlloc)
	Assign new buffer allocator with de-allocation of buffer.
bool	Allocate (const size_t theSize)
	Allocate the buffer.
void	Free ()
	De-allocate buffer.
virtual void	DumpJson (Standard_OStream &theOStream, int theDepth=-1) const
	Dumps the content of me into the stream.
Public Member Functions inherited from Standard_Transient
	Standard_Transient ()
	Empty constructor.
	Standard_Transient (const Standard_Transient &)
	Copy constructor – does nothing.
Standard_Transient &	operator= (const Standard_Transient &)
	Assignment operator, needed to avoid copying reference counter.
virtual	~Standard_Transient ()=default
	Destructor must be virtual.
virtual const opencascade::handle< Standard_Type > &	DynamicType () const
	Returns a type descriptor about this object.
bool	IsInstance (const opencascade::handle< Standard_Type > &theType) const
	Returns a true value if this is an instance of Type.
bool	IsInstance (const char *const theTypeName) const
	Returns a true value if this is an instance of TypeName.
bool	IsKind (const opencascade::handle< Standard_Type > &theType) const
	Returns true if this is an instance of Type or an instance of any class that inherits from Type. Note that multiple inheritance is not supported by OCCT RTTI mechanism.
bool	IsKind (const char *const theTypeName) const
	Returns true if this is an instance of TypeName or an instance of any class that inherits from TypeName. Note that multiple inheritance is not supported by OCCT RTTI mechanism.
Standard_Transient *	This () const
	Returns non-const pointer to this object (like const_cast). For protection against creating handle to objects allocated in stack or call from constructor, it will raise exception Standard_ProgramError if reference counter is zero.
int	GetRefCount () const noexcept
	Get the reference counter of this object.
void	IncrementRefCounter () noexcept
	Increments the reference counter of this object. Uses relaxed memory ordering since incrementing only requires atomicity, not synchronization with other memory operations.
int	DecrementRefCounter () noexcept
	Decrements the reference counter of this object; returns the decremented value. Uses release ordering for the decrement to ensure all writes to the object are visible before the count reaches zero. An acquire fence is added only when the count reaches zero, ensuring proper synchronization before deletion. This is more efficient than using acq_rel for every decrement.
virtual void	Delete () const
	Memory deallocator for transient classes.

Protected Attributes
uint8_t *	myData
	data pointer
size_t	mySize
	buffer length in bytes
occ::handle< NCollection_BaseAllocator >	myAllocator
	buffer allocator

Additional Inherited Members
Public Types inherited from Standard_Transient
typedef void	base_type
	Returns a type descriptor about this object.
Static Public Member Functions inherited from Standard_Transient
static constexpr const char *	get_type_name ()
	Returns a type descriptor about this object.
static const opencascade::handle< Standard_Type > &	get_type_descriptor ()
	Returns type descriptor of Standard_Transient class.

Detailed Description

Low-level buffer object.

Constructor & Destructor Documentation

NCollection_Buffer()

NCollection_Buffer::NCollection_Buffer ( const occ::handle< NCollection_BaseAllocator > & theAlloc, const size_t theSize = 0, uint8_t * theData = nullptr )

inline

Default constructor. When theData is NULL but theSize is not 0 than buffer of specified size will be allocated.

Parameters

theAlloc	memory allocator
theSize	buffer size
theData	buffer data allocated by theAlloc

~NCollection_Buffer()

NCollection_Buffer::~NCollection_Buffer ( )

inlineoverride

Destructor.

Member Function Documentation

Allocate()

bool NCollection_Buffer::Allocate ( const size_t theSize )

inline

Allocate the buffer.

Parameters

theSize

buffer length in bytes

Allocator()

const occ::handle< NCollection_BaseAllocator > & NCollection_Buffer::Allocator ( ) const

inlinenoexcept

Returns

buffer allocator

ChangeData()

uint8_t * NCollection_Buffer::ChangeData ( )

inlinenoexcept

Returns

buffer data

Data()

const uint8_t * NCollection_Buffer::Data ( ) const

inlinenoexcept

Returns

buffer data

DumpJson()

virtual void NCollection_Buffer::DumpJson ( Standard_OStream & theOStream, int theDepth = -1 ) const

inlinevirtual

Dumps the content of me into the stream.

Reimplemented in Graphic3d_BoundBuffer, Graphic3d_Buffer, and Graphic3d_IndexBuffer.

Free()

void NCollection_Buffer::Free ( )

inline

De-allocate buffer.

IsEmpty()

bool NCollection_Buffer::IsEmpty ( ) const

inlinenoexcept

Returns

true if buffer is not allocated

SetAllocator()

void NCollection_Buffer::SetAllocator ( const occ::handle< NCollection_BaseAllocator > & theAlloc )

inline

Assign new buffer allocator with de-allocation of buffer.

Size()

size_t NCollection_Buffer::Size ( ) const

inlinenoexcept

Return buffer length in bytes.

Field Documentation

myAllocator

occ::handle<NCollection_BaseAllocator> NCollection_Buffer::myAllocator

protected

buffer allocator

myData

uint8_t* NCollection_Buffer::myData

protected

data pointer

mySize

size_t NCollection_Buffer::mySize

protected

buffer length in bytes

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

• NCollection_Buffer.hxx