#include <map-updater.h>

Collaboration diagram for v8::internal::MapUpdater:

Public Member Functions
	MapUpdater (Isolate *isolate, DirectHandle< Map > old_map)

Handle< Map >	ReconfigureToDataField (InternalIndex descriptor, PropertyAttributes attributes, PropertyConstness constness, Representation representation, DirectHandle< FieldType > field_type)

DirectHandle< Map >	ReconfigureElementsKind (ElementsKind elements_kind)

Handle< Map >	ApplyPrototypeTransition (DirectHandle< JSPrototype > prototype)

Handle< Map >	Update ()

Static Public Member Functions
static std::optional< Tagged< Map > >	TryUpdateNoLock (Isolate *isolate, Tagged< Map > old_map, ConcurrencyMode cmode) V8_WARN_UNUSED_RESULT

static Handle< Map >	ReconfigureExistingProperty (Isolate *isolate, DirectHandle< Map > map, InternalIndex descriptor, PropertyKind kind, PropertyAttributes attributes, PropertyConstness constness)

static void	GeneralizeField (Isolate *isolate, DirectHandle< Map > map, InternalIndex modify_index, PropertyConstness new_constness, Representation new_representation, DirectHandle< FieldType > new_field_type)

static void	CompleteInobjectSlackTracking (Isolate *isolate, Tagged< Map > initial_map)

Private Types
enum	State { kInitialized , kAtRootMap , kAtTargetMap , kAtIntegrityLevelSource , kEnd }

Private Member Functions
Handle< Map >	UpdateImpl ()

State	TryReconfigureToDataFieldInplace ()

State	FindRootMap ()

State	FindTargetMap ()

DirectHandle< DescriptorArray >	BuildDescriptorArray ()

DirectHandle< Map >	FindSplitMap (DirectHandle< DescriptorArray > descriptors)

State	ConstructNewMap ()

State	ConstructNewMapWithIntegrityLevelTransition ()

State	Normalize (const char *reason)

Tagged< Name >	GetKey (InternalIndex descriptor) const

PropertyDetails	GetDetails (InternalIndex descriptor) const

Tagged< Object >	GetValue (InternalIndex descriptor) const

Tagged< FieldType >	GetFieldType (InternalIndex descriptor) const

DirectHandle< FieldType >	GetOrComputeFieldType (InternalIndex descriptor, PropertyLocation location, Representation representation) const

DirectHandle< FieldType >	GetOrComputeFieldType (DirectHandle< DescriptorArray > descriptors, InternalIndex descriptor, PropertyLocation location, Representation representation)

void	GeneralizeField (DirectHandle< Map > map, InternalIndex modify_index, PropertyConstness new_constness, Representation new_representation, DirectHandle< FieldType > new_field_type)

bool	TrySaveIntegrityLevelTransitions ()

Static Private Member Functions
static DirectHandle< Map >	UpdateMapNoLock (Isolate *isolate, DirectHandle< Map > old_map)

static void	UpdateFieldType (Isolate *isolate, DirectHandle< Map > map, InternalIndex descriptor_number, DirectHandle< Name > name, PropertyConstness new_constness, Representation new_representation, DirectHandle< FieldType > new_type)

Private Attributes
Isolate *	isolate_

DirectHandle< Map >	old_map_

DirectHandle< DescriptorArray >	old_descriptors_

Handle< Map >	root_map_

Handle< Map >	target_map_

Handle< Map >	result_map_

int	old_nof_

bool	has_integrity_level_transition_ = false

PropertyAttributes	integrity_level_ = NONE

DirectHandle< Symbol >	integrity_level_symbol_

DirectHandle< Map >	integrity_source_map_

State	state_ = kInitialized

ElementsKind	new_elements_kind_

bool	is_transitionable_fast_elements_kind_

DirectHandle< JSPrototype >	new_prototype_

InternalIndex	modified_descriptor_ = InternalIndex::NotFound()

PropertyKind	new_kind_ = PropertyKind::kData

PropertyAttributes	new_attributes_ = NONE

PropertyConstness	new_constness_ = PropertyConstness::kMutable

PropertyLocation	new_location_ = PropertyLocation::kField

Representation	new_representation_ = Representation::None()

DirectHandle< FieldType >	new_field_type_

Detailed Description

Definition at line 51 of file map-updater.h.

Member Enumeration Documentation

◆ State

enum v8::internal::MapUpdater::State

private

Enumerator
kInitialized
kAtRootMap
kAtTargetMap
kAtIntegrityLevelSource
kEnd

Definition at line 107 of file map-updater.h.

Constructor & Destructor Documentation

◆ MapUpdater()

v8::internal::MapUpdater::MapUpdater	(	Isolate *	isolate,
		DirectHandle< Map >	old_map )

Definition at line 90 of file map-updater.cc.

Member Function Documentation

◆ ApplyPrototypeTransition()

Handle< Map > v8::internal::MapUpdater::ApplyPrototypeTransition ( DirectHandle< JSPrototype > prototype )

Definition at line 242 of file map-updater.cc.

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◆ BuildDescriptorArray()

DirectHandle< DescriptorArray > v8::internal::MapUpdater::BuildDescriptorArray ( )

private

Definition at line 822 of file map-updater.cc.

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◆ CompleteInobjectSlackTracking()

void v8::internal::MapUpdater::CompleteInobjectSlackTracking	(	Isolate *	isolate,
		Tagged< Map >	initial_map )

static

Definition at line 455 of file map-updater.cc.

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◆ ConstructNewMap()

MapUpdater::State v8::internal::MapUpdater::ConstructNewMap ( )

private

Definition at line 1039 of file map-updater.cc.

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◆ ConstructNewMapWithIntegrityLevelTransition()

MapUpdater::State v8::internal::MapUpdater::ConstructNewMapWithIntegrityLevelTransition ( )

private

Definition at line 1147 of file map-updater.cc.

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◆ FindRootMap()

MapUpdater::State v8::internal::MapUpdater::FindRootMap ( )

private

Definition at line 588 of file map-updater.cc.

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◆ FindSplitMap()

DirectHandle< Map > v8::internal::MapUpdater::FindSplitMap ( DirectHandle< DescriptorArray > descriptors )

private

Definition at line 1002 of file map-updater.cc.

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◆ FindTargetMap()

MapUpdater::State v8::internal::MapUpdater::FindTargetMap ( )

private

Definition at line 693 of file map-updater.cc.

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◆ GeneralizeField() [1/2]

void v8::internal::MapUpdater::GeneralizeField	(	DirectHandle< Map >	map,
		InternalIndex	modify_index,
		PropertyConstness	new_constness,
		Representation	new_representation,
		DirectHandle< FieldType >	new_field_type )

private

Definition at line 433 of file map-updater.cc.

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◆ GeneralizeField() [2/2]

void v8::internal::MapUpdater::GeneralizeField	(	Isolate *	isolate,
		DirectHandle< Map >	map,
		InternalIndex	modify_index,
		PropertyConstness	new_constness,
		Representation	new_representation,
		DirectHandle< FieldType >	new_field_type )

static

Definition at line 1308 of file map-updater.cc.

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◆ GetDetails()

PropertyDetails v8::internal::MapUpdater::GetDetails ( InternalIndex descriptor ) const

inlineprivate

Definition at line 107 of file map-updater.cc.

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◆ GetFieldType()

Tagged< FieldType > v8::internal::MapUpdater::GetFieldType ( InternalIndex descriptor ) const

inlineprivate

Definition at line 138 of file map-updater.cc.

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◆ GetKey()

Tagged< Name > v8::internal::MapUpdater::GetKey ( InternalIndex descriptor ) const

inlineprivate

Definition at line 103 of file map-updater.cc.

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◆ GetOrComputeFieldType() [1/2]

DirectHandle< FieldType > v8::internal::MapUpdater::GetOrComputeFieldType	(	DirectHandle< DescriptorArray >	descriptors,
		InternalIndex	descriptor,
		PropertyLocation	location,
		Representation	representation )

inlineprivate

Definition at line 161 of file map-updater.cc.

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◆ GetOrComputeFieldType() [2/2]

DirectHandle< FieldType > v8::internal::MapUpdater::GetOrComputeFieldType	(	InternalIndex	descriptor,
		PropertyLocation	location,
		Representation	representation ) const

inlineprivate

Definition at line 148 of file map-updater.cc.

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◆ GetValue()

Tagged< Object > v8::internal::MapUpdater::GetValue ( InternalIndex descriptor ) const

inlineprivate

Definition at line 128 of file map-updater.cc.

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◆ Normalize()

MapUpdater::State v8::internal::MapUpdater::Normalize ( const char * reason )

private

Definition at line 446 of file map-updater.cc.

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◆ ReconfigureElementsKind()

DirectHandle< Map > v8::internal::MapUpdater::ReconfigureElementsKind ( ElementsKind elements_kind )

Definition at line 231 of file map-updater.cc.

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◆ ReconfigureExistingProperty()

Handle< Map > v8::internal::MapUpdater::ReconfigureExistingProperty	(	Isolate *	isolate,
		DirectHandle< Map >	map,
		InternalIndex	descriptor,
		PropertyKind	kind,
		PropertyAttributes	attributes,
		PropertyConstness	constness )

static

Definition at line 1188 of file map-updater.cc.

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◆ ReconfigureToDataField()

Handle< Map > v8::internal::MapUpdater::ReconfigureToDataField	(	InternalIndex	descriptor,
		PropertyAttributes	attributes,
		PropertyConstness	constness,
		Representation	representation,
		DirectHandle< FieldType >	field_type )

Definition at line 174 of file map-updater.cc.

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◆ TryReconfigureToDataFieldInplace()

MapUpdater::State v8::internal::MapUpdater::TryReconfigureToDataFieldInplace ( )

private

Definition at line 499 of file map-updater.cc.

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◆ TrySaveIntegrityLevelTransitions()

bool v8::internal::MapUpdater::TrySaveIntegrityLevelTransitions ( )

private

Definition at line 546 of file map-updater.cc.

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◆ TryUpdateNoLock()

std::optional< Tagged< Map > > v8::internal::MapUpdater::TryUpdateNoLock	(	Isolate *	isolate,
		Tagged< Map >	old_map,
		ConcurrencyMode	cmode )

static

Definition at line 353 of file map-updater.cc.

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◆ Update()

Handle< Map > v8::internal::MapUpdater::Update ( )

Definition at line 274 of file map-updater.cc.

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◆ UpdateFieldType()

void v8::internal::MapUpdater::UpdateFieldType	(	Isolate *	isolate,
		DirectHandle< Map >	map,
		InternalIndex	descriptor_number,
		DirectHandle< Name >	name,
		PropertyConstness	new_constness,
		Representation	new_representation,
		DirectHandle< FieldType >	new_type )

staticprivate

Definition at line 1213 of file map-updater.cc.

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◆ UpdateImpl()

Handle< Map > v8::internal::MapUpdater::UpdateImpl ( )

private

Definition at line 279 of file map-updater.cc.

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◆ UpdateMapNoLock()

DirectHandle< Map > v8::internal::MapUpdater::UpdateMapNoLock	(	Isolate *	isolate,
		DirectHandle< Map >	old_map )

inlinestaticprivate

Definition at line 264 of file map-updater.cc.

Member Data Documentation

◆ has_integrity_level_transition_

bool v8::internal::MapUpdater::has_integrity_level_transition_ = false

private

Definition at line 232 of file map-updater.h.

◆ integrity_level_

PropertyAttributes v8::internal::MapUpdater::integrity_level_ = NONE

private

Definition at line 233 of file map-updater.h.

◆ integrity_level_symbol_

DirectHandle<Symbol> v8::internal::MapUpdater::integrity_level_symbol_

private

Definition at line 234 of file map-updater.h.

◆ integrity_source_map_

DirectHandle<Map> v8::internal::MapUpdater::integrity_source_map_

private

Definition at line 235 of file map-updater.h.

◆ is_transitionable_fast_elements_kind_

bool v8::internal::MapUpdater::is_transitionable_fast_elements_kind_

private

Definition at line 239 of file map-updater.h.

◆ isolate_

Isolate* v8::internal::MapUpdater::isolate_

private

Definition at line 223 of file map-updater.h.

◆ modified_descriptor_

InternalIndex v8::internal::MapUpdater::modified_descriptor_ = InternalIndex::NotFound()

private

Definition at line 245 of file map-updater.h.

◆ new_attributes_

PropertyAttributes v8::internal::MapUpdater::new_attributes_ = NONE

private

Definition at line 247 of file map-updater.h.

◆ new_constness_

PropertyConstness v8::internal::MapUpdater::new_constness_ = PropertyConstness::kMutable

private

Definition at line 248 of file map-updater.h.

◆ new_elements_kind_

ElementsKind v8::internal::MapUpdater::new_elements_kind_

private

Definition at line 238 of file map-updater.h.

◆ new_field_type_

DirectHandle<FieldType> v8::internal::MapUpdater::new_field_type_

private

Definition at line 253 of file map-updater.h.

◆ new_kind_

PropertyKind v8::internal::MapUpdater::new_kind_ = PropertyKind::kData

private

Definition at line 246 of file map-updater.h.

◆ new_location_

PropertyLocation v8::internal::MapUpdater::new_location_ = PropertyLocation::kField

private

Definition at line 249 of file map-updater.h.

◆ new_prototype_

DirectHandle<JSPrototype> v8::internal::MapUpdater::new_prototype_

private

Definition at line 241 of file map-updater.h.

◆ new_representation_

Representation v8::internal::MapUpdater::new_representation_ = Representation::None()

private

Definition at line 250 of file map-updater.h.

◆ old_descriptors_

DirectHandle<DescriptorArray> v8::internal::MapUpdater::old_descriptors_

private

Definition at line 225 of file map-updater.h.

◆ old_map_

DirectHandle<Map> v8::internal::MapUpdater::old_map_

private

Definition at line 224 of file map-updater.h.

◆ old_nof_

int v8::internal::MapUpdater::old_nof_

private

Definition at line 229 of file map-updater.h.

◆ result_map_

Handle<Map> v8::internal::MapUpdater::result_map_

private

Definition at line 228 of file map-updater.h.

◆ root_map_

Handle<Map> v8::internal::MapUpdater::root_map_

private

Definition at line 226 of file map-updater.h.

◆ state_

State v8::internal::MapUpdater::state_ = kInitialized

private

Definition at line 237 of file map-updater.h.

◆ target_map_

Handle<Map> v8::internal::MapUpdater::target_map_

private

Definition at line 227 of file map-updater.h.

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

src/objects/map-updater.h
src/objects/map-updater.cc

Public Member Functions

Static Public Member Functions

Private Types

Private Member Functions

Static Private Member Functions

Private Attributes

Detailed Description

Member Enumeration Documentation

◆ State

Constructor & Destructor Documentation

◆ MapUpdater()

Member Function Documentation

◆ ApplyPrototypeTransition()

◆ BuildDescriptorArray()

◆ CompleteInobjectSlackTracking()

◆ ConstructNewMap()

◆ ConstructNewMapWithIntegrityLevelTransition()

◆ FindRootMap()

◆ FindSplitMap()

◆ FindTargetMap()

◆ GeneralizeField() [1/2]

◆ GeneralizeField() [2/2]

◆ GetDetails()

◆ GetFieldType()

◆ GetKey()

◆ GetOrComputeFieldType() [1/2]

◆ GetOrComputeFieldType() [2/2]

◆ GetValue()

◆ Normalize()

◆ ReconfigureElementsKind()

◆ ReconfigureExistingProperty()

◆ ReconfigureToDataField()

◆ TryReconfigureToDataFieldInplace()

◆ TrySaveIntegrityLevelTransitions()

◆ TryUpdateNoLock()

◆ Update()

◆ UpdateFieldType()

◆ UpdateImpl()

◆ UpdateMapNoLock()

Member Data Documentation

◆ has_integrity_level_transition_

◆ integrity_level_

◆ integrity_level_symbol_

◆ integrity_source_map_

◆ is_transitionable_fast_elements_kind_

◆ isolate_

◆ modified_descriptor_

◆ new_attributes_

◆ new_constness_

◆ new_elements_kind_

◆ new_field_type_

◆ new_kind_

◆ new_location_

◆ new_prototype_

◆ new_representation_

◆ old_descriptors_

◆ old_map_

◆ old_nof_

◆ result_map_

◆ root_map_

◆ state_

◆ target_map_