v8::internal::Internals Class Reference

#include <v8-internal.h>

Static Public Member Functions
static void	CheckInitializedImpl (v8::Isolate *isolate)
static void	CheckInitialized (v8::Isolate *isolate)
static constexpr bool	HasHeapObjectTag (Address value)
static constexpr int	SmiValue (Address value)
static constexpr Address	AddressToSmi (Address value)
static constexpr Address	IntToSmi (int value)
template<typename T , typename std::enable_if_t< std::is_integral_v< T > > * = nullptr>
static constexpr Address	IntegralToSmi (T value)
template<typename T , typename std::enable_if_t< std::is_integral_v< T > > * = nullptr>
static constexpr bool	IsValidSmi (T value)
template<typename T , typename std::enable_if_t< std::is_integral_v< T > > * = nullptr>
static constexpr std::optional< Address >	TryIntegralToSmi (T value)
static int	GetInstanceType (Address obj)
static Address	LoadMap (Address obj)
static int	GetOddballKind (Address obj)
static bool	IsExternalTwoByteString (int instance_type)
static constexpr bool	CanHaveInternalField (int instance_type)
static uint8_t	GetNodeFlag (Address *obj, int shift)
static void	UpdateNodeFlag (Address *obj, bool value, int shift)
static uint8_t	GetNodeState (Address *obj)
static void	UpdateNodeState (Address *obj, uint8_t value)
static void	SetEmbedderData (v8::Isolate *isolate, uint32_t slot, void *data)
static void *	GetEmbedderData (const v8::Isolate *isolate, uint32_t slot)
static HandleScopeData *	GetHandleScopeData (v8::Isolate *isolate)
static void	IncrementLongTasksStatsCounter (v8::Isolate *isolate)
static Address *	GetRootSlot (v8::Isolate *isolate, int index)
static Address	GetRoot (v8::Isolate *isolate, int index)
template<typename T >
static T	ReadRawField (Address heap_object_ptr, int offset)
static Address	ReadTaggedPointerField (Address heap_object_ptr, int offset)
static Address	ReadTaggedSignedField (Address heap_object_ptr, int offset)
static v8::Isolate *	GetCurrentIsolate ()
static v8::Isolate *	GetCurrentIsolateForSandbox ()
template<ExternalPointerTagRange tag_range>
static Address	ReadExternalPointerField (v8::Isolate *isolate, Address heap_object_ptr, int offset)
static Address	ReadExternalPointerField (v8::Isolate *isolate, Address heap_object_ptr, int offset, ExternalPointerTagRange tag_range)

Static Public Attributes
static const int	kHeapObjectMapOffset = 0
static const int	kMapInstanceTypeOffset = 1 * kApiTaggedSize + kApiInt32Size
static const int	kStringResourceOffset
static const int	kOddballKindOffset = 4 * kApiTaggedSize + kApiDoubleSize
static const int	kJSObjectHeaderSize = 3 * kApiTaggedSize
static const int	kJSAPIObjectWithEmbedderSlotsHeaderSize
static const int	kFixedArrayHeaderSize = 2 * kApiTaggedSize
static const int	kEmbedderDataArrayHeaderSize = 2 * kApiTaggedSize
static const int	kEmbedderDataSlotSize = kApiSystemPointerSize
static const int	kEmbedderDataSlotExternalPointerOffset = 0
static const int	kNativeContextEmbedderDataOffset = 6 * kApiTaggedSize
static const int	kStringRepresentationAndEncodingMask = 0x0f
static const int	kStringEncodingMask = 0x8
static const int	kExternalTwoByteRepresentationTag = 0x02
static const int	kExternalOneByteRepresentationTag = 0x0a
static const uint32_t	kNumIsolateDataSlots = 4
static const int	kStackGuardSize = 8 * kApiSystemPointerSize
static const int	kNumberOfBooleanFlags = 6
static const int	kErrorMessageParamSize = 1
static const int	kTablesAlignmentPaddingSize = 1
static const int	kRegExpStaticResultOffsetsVectorSize = kApiSystemPointerSize
static const int	kBuiltinTier0EntryTableSize = 7 * kApiSystemPointerSize
static const int	kBuiltinTier0TableSize = 7 * kApiSystemPointerSize
static const int	kLinearAllocationAreaSize = 3 * kApiSystemPointerSize
static const int	kThreadLocalTopSize = 29 * kApiSystemPointerSize
static const int	kHandleScopeDataSize
static const int	kExternalPointerTableBasePointerOffset = 0
static const int	kSegmentedTableSegmentPoolSize = 4
static const int	kExternalPointerTableSize
static const int	kTrustedPointerTableSize
static const int	kTrustedPointerTableBasePointerOffset = 0
static const int	kIsolateCageBaseOffset = 0
static const int	kIsolateStackGuardOffset
static const int	kVariousBooleanFlagsOffset
static const int	kErrorMessageParamOffset
static const int	kBuiltinTier0EntryTableOffset
static const int	kBuiltinTier0TableOffset
static const int	kNewAllocationInfoOffset
static const int	kOldAllocationInfoOffset
static const int	kLastYoungAllocationOffset
static const int	kFastCCallAlignmentPaddingSize
static const int	kIsolateFastCCallCallerPcOffset
static const int	kIsolateFastCCallCallerFpOffset
static const int	kIsolateFastApiCallTargetOffset
static const int	kIsolateLongTaskStatsCounterOffset
static const int	kIsolateThreadLocalTopOffset
static const int	kIsolateHandleScopeDataOffset
static const int	kIsolateEmbedderDataOffset
static const int	kIsolateApiCallbackThunkArgumentOffset
static const int	kJSDispatchTableOffset
static const int	kIsolateRegexpExecVectorArgumentOffset
static const int	kContinuationPreservedEmbedderDataOffset
static const int	kIsolateRootsOffset
static const int	kDisallowGarbageCollectionAlign = alignof(uint32_t)
static const int	kDisallowGarbageCollectionSize = sizeof(uint32_t)
static const int	kUndefinedValueRootIndex = 0
static const int	kTheHoleValueRootIndex = 1
static const int	kNullValueRootIndex = 2
static const int	kTrueValueRootIndex = 3
static const int	kFalseValueRootIndex = 4
static const int	kEmptyStringRootIndex = 5
static const int	kNodeClassIdOffset = 1 * kApiSystemPointerSize
static const int	kNodeFlagsOffset = 1 * kApiSystemPointerSize + 3
static const int	kNodeStateMask = 0x3
static const int	kNodeStateIsWeakValue = 2
static const int	kFirstNonstringType = 0x80
static const int	kOddballType = 0x83
static const int	kForeignType = 0xcc
static const int	kJSSpecialApiObjectType = 0x410
static const int	kJSObjectType = 0x421
static const int	kFirstJSApiObjectType = 0x422
static const int	kLastJSApiObjectType = 0x80A
static const int	kFirstEmbedderJSApiObjectType = 0
static const int	kLastEmbedderJSApiObjectType
static const int	kUndefinedOddballKind = 4
static const int	kNullOddballKind = 3
static const int	kDontThrow = 0
static const int	kThrowOnError = 1
static const int	kInferShouldThrowMode = 2
static constexpr size_t	kExternalAllocationSoftLimit = 64 * 1024 * 1024

Detailed Description

This class exports constants and functionality from within v8 that is necessary to implement inline functions in the v8 api. Don't depend on functions and constants defined here.

Member Function Documentation

AddressToSmi()

static constexpr Address v8::internal::Internals::AddressToSmi ( Address  value )

inlinestaticconstexpr

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CanHaveInternalField()

static constexpr bool v8::internal::Internals::CanHaveInternalField ( int  instance_type )

inlinestaticconstexpr

CheckInitialized()

static void v8::internal::Internals::CheckInitialized ( v8::Isolate *  isolate )

inlinestatic

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CheckInitializedImpl()

static void v8::internal::Internals::CheckInitializedImpl ( v8::Isolate *  isolate )

static

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GetCurrentIsolate()

static v8::Isolate * v8::internal::Internals::GetCurrentIsolate ( )

static

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GetCurrentIsolateForSandbox()

static v8::Isolate * v8::internal::Internals::GetCurrentIsolateForSandbox ( )

inlinestatic

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GetEmbedderData()

static void * v8::internal::Internals::GetEmbedderData ( const v8::Isolate *  isolate, uint32_t  slot  )

inlinestatic

GetHandleScopeData()

static HandleScopeData * v8::internal::Internals::GetHandleScopeData ( v8::Isolate *  isolate )

inlinestatic

GetInstanceType()

static int v8::internal::Internals::GetInstanceType ( Address  obj )

inlinestatic

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GetNodeFlag()

static uint8_t v8::internal::Internals::GetNodeFlag ( Address *  obj, int  shift  )

inlinestatic

GetNodeState()

static uint8_t v8::internal::Internals::GetNodeState ( Address *  obj )

inlinestatic

GetOddballKind()

static int v8::internal::Internals::GetOddballKind ( Address  obj )

inlinestatic

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GetRoot()

static Address v8::internal::Internals::GetRoot ( v8::Isolate *  isolate, int  index  )

inlinestatic

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GetRootSlot()

static Address * v8::internal::Internals::GetRootSlot ( v8::Isolate *  isolate, int  index  )

inlinestatic

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HasHeapObjectTag()

static constexpr bool v8::internal::Internals::HasHeapObjectTag ( Address  value )

inlinestaticconstexpr

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IncrementLongTasksStatsCounter()

static void v8::internal::Internals::IncrementLongTasksStatsCounter ( v8::Isolate *  isolate )

inlinestatic

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IntegralToSmi()

template<typename T , typename std::enable_if_t< std::is_integral_v< T > > * = nullptr>

static constexpr Address v8::internal::Internals::IntegralToSmi ( T  value )

inlinestaticconstexpr

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IntToSmi()

static constexpr Address v8::internal::Internals::IntToSmi ( int  value )

inlinestaticconstexpr

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IsExternalTwoByteString()

static bool v8::internal::Internals::IsExternalTwoByteString ( int  instance_type )

inlinestatic

IsValidSmi()

template<typename T , typename std::enable_if_t< std::is_integral_v< T > > * = nullptr>

static constexpr bool v8::internal::Internals::IsValidSmi ( T  value )

inlinestaticconstexpr

LoadMap()

static Address v8::internal::Internals::LoadMap ( Address  obj )

inlinestatic

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ReadExternalPointerField() [1/2]

template<ExternalPointerTagRange tag_range>

static Address v8::internal::Internals::ReadExternalPointerField ( v8::Isolate *  isolate, Address  heap_object_ptr, int  offset  )

inlinestatic

ReadExternalPointerField() [2/2]

static Address v8::internal::Internals::ReadExternalPointerField ( v8::Isolate *  isolate, Address  heap_object_ptr, int  offset, ExternalPointerTagRange  tag_range  )

inlinestatic

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ReadRawField()

template<typename T >

static T v8::internal::Internals::ReadRawField ( Address  heap_object_ptr, int  offset  )

inlinestatic

ReadTaggedPointerField()

static Address v8::internal::Internals::ReadTaggedPointerField ( Address  heap_object_ptr, int  offset  )

inlinestatic

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ReadTaggedSignedField()

static Address v8::internal::Internals::ReadTaggedSignedField ( Address  heap_object_ptr, int  offset  )

inlinestatic

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SetEmbedderData()

static void v8::internal::Internals::SetEmbedderData ( v8::Isolate *  isolate, uint32_t  slot, void *  data  )

inlinestatic

SmiValue()

static constexpr int v8::internal::Internals::SmiValue ( Address  value )

inlinestaticconstexpr

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TryIntegralToSmi()

template<typename T , typename std::enable_if_t< std::is_integral_v< T > > * = nullptr>

static constexpr std::optional< Address > v8::internal::Internals::TryIntegralToSmi ( T  value )

inlinestaticconstexpr

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UpdateNodeFlag()

static void v8::internal::Internals::UpdateNodeFlag ( Address *  obj, bool  value, int  shift  )

inlinestatic

UpdateNodeState()

static void v8::internal::Internals::UpdateNodeState ( Address *  obj, uint8_t  value  )

inlinestatic

Member Data Documentation

kBuiltinTier0EntryTableOffset

const int v8::internal::Internals::kBuiltinTier0EntryTableOffset

static

Initial value:

=
      kErrorMessageParamOffset + kErrorMessageParamSize +
      kTablesAlignmentPaddingSize + kRegExpStaticResultOffsetsVectorSize

kBuiltinTier0EntryTableSize

const int v8::internal::Internals::kBuiltinTier0EntryTableSize = 7 * kApiSystemPointerSize

static

kBuiltinTier0TableOffset

const int v8::internal::Internals::kBuiltinTier0TableOffset

static

Initial value:

=
      kBuiltinTier0EntryTableOffset + kBuiltinTier0EntryTableSize

kBuiltinTier0TableSize

const int v8::internal::Internals::kBuiltinTier0TableSize = 7 * kApiSystemPointerSize

static

kContinuationPreservedEmbedderDataOffset

const int v8::internal::Internals::kContinuationPreservedEmbedderDataOffset

static

Initial value:

=
      kIsolateRegexpExecVectorArgumentOffset + kApiSystemPointerSize

kDisallowGarbageCollectionAlign

const int v8::internal::Internals::kDisallowGarbageCollectionAlign = alignof(uint32_t)

static

kDisallowGarbageCollectionSize

const int v8::internal::Internals::kDisallowGarbageCollectionSize = sizeof(uint32_t)

static

kDontThrow

const int v8::internal::Internals::kDontThrow = 0

static

kEmbedderDataArrayHeaderSize

const int v8::internal::Internals::kEmbedderDataArrayHeaderSize = 2 * kApiTaggedSize

static

kEmbedderDataSlotExternalPointerOffset

const int v8::internal::Internals::kEmbedderDataSlotExternalPointerOffset = 0

static

kEmbedderDataSlotSize

const int v8::internal::Internals::kEmbedderDataSlotSize = kApiSystemPointerSize

static

kEmptyStringRootIndex

const int v8::internal::Internals::kEmptyStringRootIndex = 5

static

kErrorMessageParamOffset

const int v8::internal::Internals::kErrorMessageParamOffset

static

Initial value:

=
      kVariousBooleanFlagsOffset + kNumberOfBooleanFlags

kErrorMessageParamSize

const int v8::internal::Internals::kErrorMessageParamSize = 1

static

kExternalAllocationSoftLimit

constexpr size_t v8::internal::Internals::kExternalAllocationSoftLimit = 64 * 1024 * 1024

staticconstexpr

kExternalOneByteRepresentationTag

const int v8::internal::Internals::kExternalOneByteRepresentationTag = 0x0a

static

kExternalPointerTableBasePointerOffset

const int v8::internal::Internals::kExternalPointerTableBasePointerOffset = 0

static

kExternalPointerTableSize

const int v8::internal::Internals::kExternalPointerTableSize

static

Initial value:

=
      4 * kApiSystemPointerSize +
      kSegmentedTableSegmentPoolSize * sizeof(uint32_t)

kExternalTwoByteRepresentationTag

const int v8::internal::Internals::kExternalTwoByteRepresentationTag = 0x02

static

kFalseValueRootIndex

const int v8::internal::Internals::kFalseValueRootIndex = 4

static

kFastCCallAlignmentPaddingSize

const int v8::internal::Internals::kFastCCallAlignmentPaddingSize

static

Initial value:

=
      kApiSystemPointerSize == 8 ? 5 * kApiSystemPointerSize
                                 : 1 * kApiSystemPointerSize

kFirstEmbedderJSApiObjectType

const int v8::internal::Internals::kFirstEmbedderJSApiObjectType = 0

static

kFirstJSApiObjectType

const int v8::internal::Internals::kFirstJSApiObjectType = 0x422

static

kFirstNonstringType

const int v8::internal::Internals::kFirstNonstringType = 0x80

static

kFixedArrayHeaderSize

const int v8::internal::Internals::kFixedArrayHeaderSize = 2 * kApiTaggedSize

static

kForeignType

const int v8::internal::Internals::kForeignType = 0xcc

static

kHandleScopeDataSize

const int v8::internal::Internals::kHandleScopeDataSize

static

Initial value:

=
      2 * kApiSystemPointerSize + 2 * kApiInt32Size

kHeapObjectMapOffset

const int v8::internal::Internals::kHeapObjectMapOffset = 0

static

kInferShouldThrowMode

const int v8::internal::Internals::kInferShouldThrowMode = 2

static

kIsolateApiCallbackThunkArgumentOffset

const int v8::internal::Internals::kIsolateApiCallbackThunkArgumentOffset

static

Initial value:

=
      kIsolateEmbedderDataOffset + kNumIsolateDataSlots * kApiSystemPointerSize

kIsolateCageBaseOffset

const int v8::internal::Internals::kIsolateCageBaseOffset = 0

static

kIsolateEmbedderDataOffset

const int v8::internal::Internals::kIsolateEmbedderDataOffset

static

Initial value:

=
      kIsolateHandleScopeDataOffset + kHandleScopeDataSize

kIsolateFastApiCallTargetOffset

const int v8::internal::Internals::kIsolateFastApiCallTargetOffset

static

Initial value:

=
      kIsolateFastCCallCallerFpOffset + kApiSystemPointerSize

kIsolateFastCCallCallerFpOffset

const int v8::internal::Internals::kIsolateFastCCallCallerFpOffset

static

Initial value:

=
      kIsolateFastCCallCallerPcOffset + kApiSystemPointerSize

kIsolateFastCCallCallerPcOffset

const int v8::internal::Internals::kIsolateFastCCallCallerPcOffset

static

Initial value:

=
      kLastYoungAllocationOffset + kLinearAllocationAreaSize +
      kFastCCallAlignmentPaddingSize

kIsolateHandleScopeDataOffset

const int v8::internal::Internals::kIsolateHandleScopeDataOffset

static

Initial value:

=
      kIsolateThreadLocalTopOffset + kThreadLocalTopSize

kIsolateLongTaskStatsCounterOffset

const int v8::internal::Internals::kIsolateLongTaskStatsCounterOffset

static

Initial value:

=
      kIsolateFastApiCallTargetOffset + kApiSystemPointerSize

kIsolateRegexpExecVectorArgumentOffset

const int v8::internal::Internals::kIsolateRegexpExecVectorArgumentOffset

static

Initial value:

=
      kJSDispatchTableOffset + kApiSystemPointerSize

kIsolateRootsOffset

const int v8::internal::Internals::kIsolateRootsOffset

static

Initial value:

=
      kContinuationPreservedEmbedderDataOffset + kApiSystemPointerSize

kIsolateStackGuardOffset

const int v8::internal::Internals::kIsolateStackGuardOffset

static

Initial value:

=
      kIsolateCageBaseOffset + kApiSystemPointerSize

kIsolateThreadLocalTopOffset

const int v8::internal::Internals::kIsolateThreadLocalTopOffset

static

Initial value:

=
      kIsolateLongTaskStatsCounterOffset + kApiSizetSize

kJSAPIObjectWithEmbedderSlotsHeaderSize

const int v8::internal::Internals::kJSAPIObjectWithEmbedderSlotsHeaderSize

static

Initial value:

=
      kJSObjectHeaderSize + kApiTaggedSize

kJSDispatchTableOffset

const int v8::internal::Internals::kJSDispatchTableOffset

static

Initial value:

=
      kIsolateApiCallbackThunkArgumentOffset + kApiSystemPointerSize

kJSObjectHeaderSize

const int v8::internal::Internals::kJSObjectHeaderSize = 3 * kApiTaggedSize

static

kJSObjectType

const int v8::internal::Internals::kJSObjectType = 0x421

static

kJSSpecialApiObjectType

const int v8::internal::Internals::kJSSpecialApiObjectType = 0x410

static

kLastEmbedderJSApiObjectType

const int v8::internal::Internals::kLastEmbedderJSApiObjectType

static

Initial value:

=
      kLastJSApiObjectType - kFirstJSApiObjectType

kLastJSApiObjectType

const int v8::internal::Internals::kLastJSApiObjectType = 0x80A

static

kLastYoungAllocationOffset

const int v8::internal::Internals::kLastYoungAllocationOffset

static

Initial value:

=
      kOldAllocationInfoOffset + kApiSystemPointerSize

kLinearAllocationAreaSize

const int v8::internal::Internals::kLinearAllocationAreaSize = 3 * kApiSystemPointerSize

static

kMapInstanceTypeOffset

const int v8::internal::Internals::kMapInstanceTypeOffset = 1 * kApiTaggedSize + kApiInt32Size

static

kNativeContextEmbedderDataOffset

const int v8::internal::Internals::kNativeContextEmbedderDataOffset = 6 * kApiTaggedSize

static

kNewAllocationInfoOffset

const int v8::internal::Internals::kNewAllocationInfoOffset

static

Initial value:

=
      kBuiltinTier0TableOffset + kBuiltinTier0TableSize

kNodeClassIdOffset

const int v8::internal::Internals::kNodeClassIdOffset = 1 * kApiSystemPointerSize

static

kNodeFlagsOffset

const int v8::internal::Internals::kNodeFlagsOffset = 1 * kApiSystemPointerSize + 3

static

kNodeStateIsWeakValue

const int v8::internal::Internals::kNodeStateIsWeakValue = 2

static

kNodeStateMask

const int v8::internal::Internals::kNodeStateMask = 0x3

static

kNullOddballKind

const int v8::internal::Internals::kNullOddballKind = 3

static

kNullValueRootIndex

const int v8::internal::Internals::kNullValueRootIndex = 2

static

kNumberOfBooleanFlags

const int v8::internal::Internals::kNumberOfBooleanFlags = 6

static

kNumIsolateDataSlots

const uint32_t v8::internal::Internals::kNumIsolateDataSlots = 4

static

kOddballKindOffset

const int v8::internal::Internals::kOddballKindOffset = 4 * kApiTaggedSize + kApiDoubleSize

static

kOddballType

const int v8::internal::Internals::kOddballType = 0x83

static

kOldAllocationInfoOffset

const int v8::internal::Internals::kOldAllocationInfoOffset

static

Initial value:

=
      kNewAllocationInfoOffset + kLinearAllocationAreaSize

kRegExpStaticResultOffsetsVectorSize

const int v8::internal::Internals::kRegExpStaticResultOffsetsVectorSize = kApiSystemPointerSize

static

kSegmentedTableSegmentPoolSize

const int v8::internal::Internals::kSegmentedTableSegmentPoolSize = 4

static

kStackGuardSize

const int v8::internal::Internals::kStackGuardSize = 8 * kApiSystemPointerSize

static

kStringEncodingMask

const int v8::internal::Internals::kStringEncodingMask = 0x8

static

kStringRepresentationAndEncodingMask

const int v8::internal::Internals::kStringRepresentationAndEncodingMask = 0x0f

static

kStringResourceOffset

const int v8::internal::Internals::kStringResourceOffset

static

Initial value:

=
      1 * kApiTaggedSize + 2 * kApiInt32Size

kTablesAlignmentPaddingSize

const int v8::internal::Internals::kTablesAlignmentPaddingSize = 1

static

kTheHoleValueRootIndex

const int v8::internal::Internals::kTheHoleValueRootIndex = 1

static

kThreadLocalTopSize

const int v8::internal::Internals::kThreadLocalTopSize = 29 * kApiSystemPointerSize

static

kThrowOnError

const int v8::internal::Internals::kThrowOnError = 1

static

kTrueValueRootIndex

const int v8::internal::Internals::kTrueValueRootIndex = 3

static

kTrustedPointerTableBasePointerOffset

const int v8::internal::Internals::kTrustedPointerTableBasePointerOffset = 0

static

kTrustedPointerTableSize

const int v8::internal::Internals::kTrustedPointerTableSize

static

Initial value:

=
      4 * kApiSystemPointerSize +
      kSegmentedTableSegmentPoolSize * sizeof(uint32_t)

kUndefinedOddballKind

const int v8::internal::Internals::kUndefinedOddballKind = 4

static

kUndefinedValueRootIndex

const int v8::internal::Internals::kUndefinedValueRootIndex = 0

static

kVariousBooleanFlagsOffset

const int v8::internal::Internals::kVariousBooleanFlagsOffset

static

Initial value:

=
      kIsolateStackGuardOffset + kStackGuardSize

---

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

• include/v8-internal.h