#include <v8-primitive.h>

Inheritance diagram for v8::String::ExternalStringResource:

Collaboration diagram for v8::String::ExternalStringResource:

Public Member Functions
	~ExternalStringResource () override=default

virtual const uint16_t *	data () const =0

virtual size_t	length () const =0

const uint16_t *	cached_data () const

void	UpdateDataCache ()

Public Member Functions inherited from v8::String::ExternalStringResourceBase
virtual	~ExternalStringResourceBase ()=default

virtual bool	IsCacheable () const

virtual void	Unaccount (Isolate *isolate)

virtual size_t	EstimateMemoryUsage () const

virtual void	EstimateSharedMemoryUsage (SharedMemoryUsageRecorder *recorder) const

	ExternalStringResourceBase (const ExternalStringResourceBase &)=delete

void	operator= (const ExternalStringResourceBase &)=delete

Protected Member Functions
	ExternalStringResource ()=default

Protected Member Functions inherited from v8::String::ExternalStringResourceBase
	ExternalStringResourceBase ()=default

virtual void	Dispose ()

virtual void	Lock () const

virtual void	Unlock () const

Private Member Functions
void	CheckCachedDataInvariants () const

Private Attributes
const uint16_t *	cached_data_ = nullptr

Additional Inherited Members
Static Public Attributes inherited from v8::String::ExternalStringResourceBase
static constexpr size_t	kDefaultMemoryEstimate = static_cast<size_t>(-1)

Detailed Description

An ExternalStringResource is a wrapper around a two-byte string buffer that resides outside V8's heap. Implement an ExternalStringResource to manage the life cycle of the underlying buffer. Note that the string data must be immutable.

Definition at line 390 of file v8-primitive.h.

Constructor & Destructor Documentation

◆ ~ExternalStringResource()

v8::String::ExternalStringResource::~ExternalStringResource ( )

overridedefault

Override the destructor to manage the life cycle of the underlying buffer.

◆ ExternalStringResource()

v8::String::ExternalStringResource::ExternalStringResource ( )

protecteddefault

Member Function Documentation

◆ cached_data()

const uint16_t * v8::String::ExternalStringResource::cached_data ( ) const

inline

Returns the cached data from the underlying buffer. This method can be called only for cacheable resources (i.e. IsCacheable() == true) and only after UpdateDataCache() was called.

Definition at line 414 of file v8-primitive.h.

◆ CheckCachedDataInvariants()

void v8::String::ExternalStringResource::CheckCachedDataInvariants ( ) const

private

Definition at line 6154 of file api.cc.

◆ data()

virtual const uint16_t * v8::String::ExternalStringResource::data ( ) const

pure virtual

The string data from the underlying buffer. If the resource is cacheable then data() must return the same value for all invocations.

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◆ length()

virtual size_t v8::String::ExternalStringResource::length ( ) const

pure virtual

The length of the string. That is, the number of two-byte characters.

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◆ UpdateDataCache()

void v8::String::ExternalStringResource::UpdateDataCache ( )

Update {cached_data_} with the data from the underlying buffer. This can be called only for cacheable resources.

Definition at line 6149 of file api.cc.

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Member Data Documentation

◆ cached_data_

const uint16_t* v8::String::ExternalStringResource::cached_data_ = nullptr

private

Definition at line 431 of file v8-primitive.h.

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

include/v8-primitive.h
src/api/api.cc

Public Member Functions

Protected Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members