v8
V8 is Google’s open source high-performance JavaScript and WebAssembly engine, written in C++.
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Public Types | Static Public Member Functions | List of all members
v8::internal::LoadHandler Class Referencefinal

#include <handler-configuration.h>

Inheritance diagram for v8::internal::LoadHandler:
Collaboration diagram for v8::internal::LoadHandler:

Public Types

enum class  Kind {
  kElement , kIndexedString , kNormal , kGlobal ,
  kField , kConstantFromPrototype , kAccessorFromPrototype , kNativeDataProperty ,
  kApiGetter , kInterceptor , kSlow , kProxy ,
  kNonExistent , kModuleExport
}
 
using KindBits = base::BitField<Kind, 0, 4>
 
using DoAccessCheckOnLookupStartObjectBits = KindBits::Next<bool, 1>
 
using LookupOnLookupStartObjectBits
 
using DescriptorBits
 
using IsWasmStructBits = LookupOnLookupStartObjectBits::Next<bool, 1>
 
using IsInobjectBits = IsWasmStructBits::Next<bool, 1>
 
using IsDoubleBits = IsInobjectBits::Next<bool, 1>
 
using FieldIndexBits
 
using WasmFieldTypeBits = IsWasmStructBits::Next<WasmValueType, 4>
 
using WasmFieldOffsetBits = WasmFieldTypeBits::Next<unsigned, 20>
 
using AllowOutOfBoundsBits = LookupOnLookupStartObjectBits::Next<bool, 1>
 
using IsWasmArrayBits = AllowOutOfBoundsBits::Next<bool, 1>
 
using IsJsArrayBits = IsWasmArrayBits::Next<bool, 1>
 
using AllowHandlingHole = IsJsArrayBits::Next<bool, 1>
 
using ElementsKindBits = AllowHandlingHole::Next<ElementsKind, 8>
 
using WasmArrayTypeBits = IsWasmArrayBits::Next<WasmValueType, 4>
 
using ExportsIndexBits
 
- Public Types inherited from v8::internal::StructLayout
using BodyDescriptor = StructBodyDescriptor
 

Static Public Member Functions

static Kind GetHandlerKind (Tagged< Smi > smi_handler)
 
static Handle< Smi > LoadNormal (Isolate *isolate)
 
static Handle< Smi > LoadGlobal (Isolate *isolate)
 
static Handle< Smi > LoadInterceptor (Isolate *isolate)
 
static Handle< Smi > LoadSlow (Isolate *isolate)
 
static Handle< Smi > LoadField (Isolate *isolate, FieldIndex field_index)
 
static Handle< Smi > LoadConstantFromPrototype (Isolate *isolate)
 
static DirectHandle< Smi > LoadAccessorFromPrototype (Isolate *isolate)
 
static Handle< Smi > LoadProxy (Isolate *isolate)
 
static Handle< Smi > LoadNativeDataProperty (Isolate *isolate, int descriptor)
 
static Handle< Smi > LoadApiGetter (Isolate *isolate)
 
static Handle< Smi > LoadModuleExport (Isolate *isolate, int index)
 
static DirectHandle< Smi > LoadWasmStructField (Isolate *isolate, WasmValueType type, int offset)
 
static DirectHandle< Smi > LoadWasmArrayElement (Isolate *isolate, WasmValueType type)
 
static Handle< Object > LoadFullChain (Isolate *isolate, DirectHandle< Map > receiver_map, const MaybeObjectDirectHandle &holder, Handle< Smi > smi_handler)
 
static Handle< Object > LoadFromPrototype (Isolate *isolate, DirectHandle< Map > receiver_map, DirectHandle< JSReceiver > holder, Tagged< Smi > smi_handler, MaybeObjectDirectHandle maybe_data1=MaybeObjectDirectHandle(), MaybeObjectDirectHandle maybe_data2=MaybeObjectDirectHandle())
 
static Handle< Smi > LoadNonExistent (Isolate *isolate)
 
static Handle< Smi > LoadElement (Isolate *isolate, ElementsKind elements_kind, bool is_js_array, KeyedAccessLoadMode load_mode)
 
static Handle< Smi > LoadIndexedString (Isolate *isolate, KeyedAccessLoadMode load_mode)
 
static KeyedAccessLoadMode GetKeyedAccessLoadMode (Tagged< MaybeObject > handler)
 
static bool CanHandleHolderNotLookupStart (Tagged< Object > handler)
 
- Static Public Member Functions inherited from v8::internal::DataHandler
static constexpr int OffsetOf (int index)
 
static constexpr int SizeFor (int count)
 

Additional Inherited Members

- Public Member Functions inherited from v8::internal::DataHandler
Tagged< UnionOf< Smi, Code > > smi_handler () const
 
void set_smi_handler (Tagged< Smi > value)
 
void set_smi_handler (Tagged< Code > value, WriteBarrierMode mode=UPDATE_WRITE_BARRIER)
 
Tagged< UnionOf< Smi, Cell > > validity_cell () const
 
void set_validity_cell (Tagged< UnionOf< Smi, Cell > > value, WriteBarrierMode mode=UPDATE_WRITE_BARRIER)
 
int data_field_count () const
 
Tagged< MaybeObject > data1 () const
 
void set_data1 (Tagged< MaybeObject > value, WriteBarrierMode mode=UPDATE_WRITE_BARRIER)
 
Tagged< MaybeObject > data2 () const
 
void set_data2 (Tagged< MaybeObject > value, WriteBarrierMode mode=UPDATE_WRITE_BARRIER)
 
Tagged< MaybeObject > data3 () const
 
void set_data3 (Tagged< MaybeObject > value, WriteBarrierMode mode=UPDATE_WRITE_BARRIER)
 
- Public Member Functions inherited from v8::internal::StructLayout
void BriefPrintDetails (std::ostream &os)
 
- Public Member Functions inherited from v8::internal::HeapObjectLayout
 HeapObjectLayout ()=delete
 
Tagged< Map > map () const
 
Tagged< Map > map (AcquireLoadTag) const
 
MapWord map_word (RelaxedLoadTag) const
 
void set_map (Isolate *isolate, Tagged< Map > value)
 
template<typename IsolateT >
void set_map (IsolateT *isolate, Tagged< Map > value, ReleaseStoreTag)
 
template<typename IsolateT >
void set_map_safe_transition (IsolateT *isolate, Tagged< Map > value, ReleaseStoreTag)
 
void set_map_safe_transition_no_write_barrier (Isolate *isolate, Tagged< Map > value, RelaxedStoreTag=kRelaxedStore)
 
template<typename IsolateT >
void set_map_after_allocation (IsolateT *isolate, Tagged< Map > value, WriteBarrierMode mode=UPDATE_WRITE_BARRIER)
 
void set_map_no_write_barrier (Isolate *isolate, Tagged< Map > value, RelaxedStoreTag=kRelaxedStore)
 
void set_map_word_forwarded (Tagged< HeapObject > target_object, ReleaseStoreTag)
 
void set_map_word_forwarded (Tagged< HeapObject > target_object, RelaxedStoreTag)
 
Address ptr () const
 
Address address () const
 
ReadOnlyRoots EarlyGetReadOnlyRoots () const
 
int Size () const
 
V8_EXPORT_PRIVATE int SizeFromMap (Tagged< Map > map) const
 
WriteBarrierMode GetWriteBarrierMode (const DisallowGarbageCollection &promise)
 

Detailed Description

Definition at line 44 of file handler-configuration.h.

Member Typedef Documentation

◆ AllowHandlingHole

using v8::internal::LoadHandler::AllowHandlingHole = IsJsArrayBits::Next<bool, 1>

Definition at line 127 of file handler-configuration.h.

◆ AllowOutOfBoundsBits

using v8::internal::LoadHandler::AllowOutOfBoundsBits = LookupOnLookupStartObjectBits::Next<bool, 1>

Definition at line 116 of file handler-configuration.h.

◆ DescriptorBits

using v8::internal::LoadHandler::DescriptorBits
Initial value:
LookupOnLookupStartObjectBits::Next<unsigned, kDescriptorIndexBitCount>
v8::base::BitField::Next
BitField< T2, kShift+kSize, size2, U > Next
Definition bit-field.h:47

Definition at line 84 of file handler-configuration.h.

◆ DoAccessCheckOnLookupStartObjectBits

using v8::internal::LoadHandler::DoAccessCheckOnLookupStartObjectBits = KindBits::Next<bool, 1>

Definition at line 70 of file handler-configuration.h.

◆ ElementsKindBits

using v8::internal::LoadHandler::ElementsKindBits = AllowHandlingHole::Next<ElementsKind, 8>

Definition at line 128 of file handler-configuration.h.

◆ ExportsIndexBits

using v8::internal::LoadHandler::ExportsIndexBits
Initial value:
LookupOnLookupStartObjectBits::Next<
unsigned,
kSmiValueSize - LookupOnLookupStartObjectBits::kLastUsedBit - 1>
v8::base::BitField::kLastUsedBit
static constexpr int kLastUsedBit
Definition bit-field.h:42
v8::internal::kSmiValueSize
const int kSmiValueSize
Definition v8-internal.h:205

Definition at line 142 of file handler-configuration.h.

◆ FieldIndexBits

using v8::internal::LoadHandler::FieldIndexBits
Initial value:
IsDoubleBits::Next<unsigned, kDescriptorIndexBitCount + 1>

Definition at line 100 of file handler-configuration.h.

◆ IsDoubleBits

using v8::internal::LoadHandler::IsDoubleBits = IsInobjectBits::Next<bool, 1>

Definition at line 98 of file handler-configuration.h.

◆ IsInobjectBits

using v8::internal::LoadHandler::IsInobjectBits = IsWasmStructBits::Next<bool, 1>

Definition at line 97 of file handler-configuration.h.

◆ IsJsArrayBits

using v8::internal::LoadHandler::IsJsArrayBits = IsWasmArrayBits::Next<bool, 1>

Definition at line 126 of file handler-configuration.h.

◆ IsWasmArrayBits

using v8::internal::LoadHandler::IsWasmArrayBits = AllowOutOfBoundsBits::Next<bool, 1>

Definition at line 121 of file handler-configuration.h.

◆ IsWasmStructBits

using v8::internal::LoadHandler::IsWasmStructBits = LookupOnLookupStartObjectBits::Next<bool, 1>

Definition at line 92 of file handler-configuration.h.

◆ KindBits

using v8::internal::LoadHandler::KindBits = base::BitField<Kind, 0, 4>

Definition at line 65 of file handler-configuration.h.

◆ LookupOnLookupStartObjectBits

using v8::internal::LoadHandler::LookupOnLookupStartObjectBits
Initial value:
DoAccessCheckOnLookupStartObjectBits::Next<bool, 1>

Definition at line 76 of file handler-configuration.h.

◆ WasmArrayTypeBits

using v8::internal::LoadHandler::WasmArrayTypeBits = IsWasmArrayBits::Next<WasmValueType, 4>

Definition at line 135 of file handler-configuration.h.

◆ WasmFieldOffsetBits

using v8::internal::LoadHandler::WasmFieldOffsetBits = WasmFieldTypeBits::Next<unsigned, 20>

Definition at line 109 of file handler-configuration.h.

◆ WasmFieldTypeBits

using v8::internal::LoadHandler::WasmFieldTypeBits = IsWasmStructBits::Next<WasmValueType, 4>

Definition at line 108 of file handler-configuration.h.

Member Enumeration Documentation

◆ Kind

enum class v8::internal::LoadHandler::Kind
strong
Enumerator
kElement 
kIndexedString 
kNormal 
kGlobal 
kField 
kConstantFromPrototype 
kAccessorFromPrototype 
kNativeDataProperty 
kApiGetter 
kInterceptor 
kSlow 
kProxy 
kNonExistent 
kModuleExport 

Definition at line 49 of file handler-configuration.h.

Member Function Documentation

◆ CanHandleHolderNotLookupStart()

bool v8::internal::LoadHandler::CanHandleHolderNotLookupStart ( Tagged< Object > handler)
static

Definition at line 355 of file handler-configuration.cc.

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◆ GetHandlerKind()

LoadHandler::Kind v8::internal::LoadHandler::GetHandlerKind ( Tagged< Smi > smi_handler)
inlinestatic

Definition at line 26 of file handler-configuration-inl.h.

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◆ GetKeyedAccessLoadMode()

KeyedAccessLoadMode v8::internal::LoadHandler::GetKeyedAccessLoadMode ( Tagged< MaybeObject > handler)
static

Definition at line 173 of file handler-configuration.cc.

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◆ LoadAccessorFromPrototype()

DirectHandle< Smi > v8::internal::LoadHandler::LoadAccessorFromPrototype ( Isolate * isolate)
inlinestatic

Definition at line 72 of file handler-configuration-inl.h.

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◆ LoadApiGetter()

Handle< Smi > v8::internal::LoadHandler::LoadApiGetter ( Isolate * isolate)
inlinestatic

Definition at line 89 of file handler-configuration-inl.h.

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◆ LoadConstantFromPrototype()

Handle< Smi > v8::internal::LoadHandler::LoadConstantFromPrototype ( Isolate * isolate)
inlinestatic

Definition at line 67 of file handler-configuration-inl.h.

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◆ LoadElement()

Handle< Smi > v8::internal::LoadHandler::LoadElement ( Isolate * isolate,
ElementsKind elements_kind,
bool is_js_array,
KeyedAccessLoadMode load_mode )
inlinestatic

Definition at line 105 of file handler-configuration-inl.h.

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◆ LoadField()

Handle< Smi > v8::internal::LoadHandler::LoadField ( Isolate * isolate,
FieldIndex field_index )
inlinestatic

Definition at line 50 of file handler-configuration-inl.h.

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◆ LoadFromPrototype()

Handle< Object > v8::internal::LoadHandler::LoadFromPrototype ( Isolate * isolate,
DirectHandle< Map > receiver_map,
DirectHandle< JSReceiver > holder,
Tagged< Smi > smi_handler,
MaybeObjectDirectHandle maybe_data1 = MaybeObjectDirectHandle(),
MaybeObjectDirectHandle maybe_data2 = MaybeObjectDirectHandle() )
static

Definition at line 115 of file handler-configuration.cc.

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◆ LoadFullChain()

Handle< Object > v8::internal::LoadHandler::LoadFullChain ( Isolate * isolate,
DirectHandle< Map > receiver_map,
const MaybeObjectDirectHandle & holder,
Handle< Smi > smi_handler )
static

Definition at line 143 of file handler-configuration.cc.

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◆ LoadGlobal()

Handle< Smi > v8::internal::LoadHandler::LoadGlobal ( Isolate * isolate)
inlinestatic

Definition at line 35 of file handler-configuration-inl.h.

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◆ LoadIndexedString()

Handle< Smi > v8::internal::LoadHandler::LoadIndexedString ( Isolate * isolate,
KeyedAccessLoadMode load_mode )
inlinestatic

Definition at line 119 of file handler-configuration-inl.h.

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◆ LoadInterceptor()

Handle< Smi > v8::internal::LoadHandler::LoadInterceptor ( Isolate * isolate)
inlinestatic

Definition at line 40 of file handler-configuration-inl.h.

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◆ LoadModuleExport()

Handle< Smi > v8::internal::LoadHandler::LoadModuleExport ( Isolate * isolate,
int index )
inlinestatic

Definition at line 94 of file handler-configuration-inl.h.

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◆ LoadNativeDataProperty()

Handle< Smi > v8::internal::LoadHandler::LoadNativeDataProperty ( Isolate * isolate,
int descriptor )
inlinestatic

Definition at line 82 of file handler-configuration-inl.h.

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◆ LoadNonExistent()

Handle< Smi > v8::internal::LoadHandler::LoadNonExistent ( Isolate * isolate)
inlinestatic

Definition at line 100 of file handler-configuration-inl.h.

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◆ LoadNormal()

Handle< Smi > v8::internal::LoadHandler::LoadNormal ( Isolate * isolate)
inlinestatic

Definition at line 30 of file handler-configuration-inl.h.

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◆ LoadProxy()

Handle< Smi > v8::internal::LoadHandler::LoadProxy ( Isolate * isolate)
inlinestatic

Definition at line 77 of file handler-configuration-inl.h.

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◆ LoadSlow()

Handle< Smi > v8::internal::LoadHandler::LoadSlow ( Isolate * isolate)
inlinestatic

Definition at line 45 of file handler-configuration-inl.h.

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◆ LoadWasmArrayElement()

DirectHandle< Smi > v8::internal::LoadHandler::LoadWasmArrayElement ( Isolate * isolate,
WasmValueType type )
inlinestatic

Definition at line 126 of file handler-configuration-inl.h.

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◆ LoadWasmStructField()

DirectHandle< Smi > v8::internal::LoadHandler::LoadWasmStructField ( Isolate * isolate,
WasmValueType type,
int offset )
inlinestatic

Definition at line 58 of file handler-configuration-inl.h.

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