v8::internal Namespace Reference

Namespaces
	wasm

Data Structures
struct	count
struct	count< T, T, Args... >
struct	count< T, U, Args... >
class	CFunctionInfoImpl
struct	TypeInfoHelper
struct	CTypeInfoTraits
struct	TypeInfoHelper< v8::Local< v8::Array > >
struct	TypeInfoHelper< v8::Local< v8::Uint32Array > >
struct	TypeInfoHelper< FastApiCallbackOptions & >
class	CFunctionBuilderWithFunction
class	CFunctionBuilder
struct	SmiTagging
struct	SmiTagging< 4 >
struct	SmiTagging< 8 >
class	Internals
struct	CastCheck
class	BackingStoreBase
class	CustomArguments

Typedefs
typedef uintptr_t	Address
using	PlatformSmiTagging = SmiTagging< kApiTaggedSize >
using	SandboxedPointer_t = Address
using	ExternalPointer_t = Address

Enumerations
enum	ExternalPointerTag : uint64_t {   kExternalPointerNullTag = MAKE_TAG(0b0000000000000000) , kExternalPointerFreeEntryTag = MAKE_TAG(0b0111111110000000) , kExternalStringResourceTag = MAKE_TAG(0b1000000011111111) , kExternalStringResourceDataTag = MAKE_TAG(0b1000000101111111) ,   kForeignForeignAddressTag = MAKE_TAG(0b1000000110111111) , kNativeContextMicrotaskQueueTag = MAKE_TAG(0b1000000111011111) , kEmbedderDataSlotPayloadTag = MAKE_TAG(0b1000000111101111) , kCodeEntryPointTag = MAKE_TAG(0b1000000111110111) ,   kExternalObjectValueTag = MAKE_TAG(0b1000000111111011) }
enum class	GlobalHandleDestructionMode { kWithDestructor , kWithoutDestructor }
enum class	GlobalHandleStoreMode { kInitializingStore , kAssigningStore }

Functions
constexpr bool	PointerCompressionIsEnabled ()
constexpr bool	SmiValuesAre31Bits ()
constexpr bool	SmiValuesAre32Bits ()
constexpr bool	SandboxIsEnabled ()
constexpr bool	SandboxedExternalPointersAreEnabled ()
V8_EXPORT Address	DecodeExternalPointerImpl (const Isolate *isolate, ExternalPointer_t pointer, ExternalPointerTag tag)
V8_EXPORT internal::Isolate *	IsolateFromNeverReadOnlySpaceObject (Address obj)
V8_EXPORT bool	ShouldThrowOnError (v8::internal::Isolate *isolate)
V8_EXPORT bool	CanHaveInternalField (int instance_type)
template<class T >
V8_INLINE void	PerformCastCheck (T *data)
V8_EXPORT internal::Address *	GlobalizeTracedReference (internal::Isolate *isolate, internal::Address *handle, internal::Address *slot, GlobalHandleDestructionMode destruction_mode, GlobalHandleStoreMode store_mode)
V8_EXPORT void	MoveTracedGlobalReference (internal::Address **from, internal::Address **to)
V8_EXPORT void	CopyTracedGlobalReference (const internal::Address *const *from, internal::Address **to)
V8_EXPORT void	DisposeTracedGlobal (internal::Address *global_handle)
V8_EXPORT void	SetFinalizationCallbackTraced (internal::Address *location, void *parameter, WeakCallbackInfo< void >::Callback callback)

Variables
constexpr int	KB = 1024
constexpr int	MB = KB * 1024
constexpr int	GB = MB * 1024
const int	kApiSystemPointerSize = sizeof(void*)
const int	kApiDoubleSize = sizeof(double)
const int	kApiInt32Size = sizeof(int32_t)
const int	kApiInt64Size = sizeof(int64_t)
const int	kApiSizetSize = sizeof(size_t)
const int	kHeapObjectTag = 1
const int	kWeakHeapObjectTag = 3
const int	kHeapObjectTagSize = 2
const intptr_t	kHeapObjectTagMask = (1 << kHeapObjectTagSize) - 1
const int	kForwardingTag = 0
const int	kForwardingTagSize = 2
const intptr_t	kForwardingTagMask = (1 << kForwardingTagSize) - 1
const int	kSmiTag = 0
const int	kSmiTagSize = 1
const intptr_t	kSmiTagMask = (1 << kSmiTagSize) - 1
constexpr intptr_t	kIntptrAllBitsSet = intptr_t{-1}
constexpr uintptr_t	kUintptrAllBitsSet
const int	kApiTaggedSize = kApiSystemPointerSize
const int	kSmiShiftSize = PlatformSmiTagging::kSmiShiftSize
const int	kSmiValueSize = PlatformSmiTagging::kSmiValueSize
const int	kSmiMinValue = static_cast<int>(PlatformSmiTagging::kSmiMinValue)
const int	kSmiMaxValue = static_cast<int>(PlatformSmiTagging::kSmiMaxValue)
constexpr uint64_t	kExternalPointerTagMask = 0xffff000000000000
constexpr uint64_t	kExternalPointerTagShift = 48
constexpr int	kGarbageCollectionReasonMaxValue = 25

Typedef Documentation

Address

typedef uintptr_t Address

Definition at line 29 of file v8-internal.h.

ExternalPointer_t

using ExternalPointer_t = Address

Definition at line 185 of file v8-internal.h.

PlatformSmiTagging

using PlatformSmiTagging = SmiTagging<kApiTaggedSize>

Definition at line 139 of file v8-internal.h.

SandboxedPointer_t

using SandboxedPointer_t = Address

Definition at line 177 of file v8-internal.h.

Enumeration Type Documentation

ExternalPointerTag

enum ExternalPointerTag : uint64_t

Enumerator
kExternalPointerNullTag
kExternalPointerFreeEntryTag
kExternalStringResourceTag
kExternalStringResourceDataTag
kForeignForeignAddressTag
kNativeContextMicrotaskQueueTag
kEmbedderDataSlotPayloadTag
kCodeEntryPointTag
kExternalObjectValueTag

Definition at line 300 of file v8-internal.h.

GlobalHandleDestructionMode

enum GlobalHandleDestructionMode

strong

Enumerator
kWithDestructor
kWithoutDestructor

Definition at line 30 of file v8-traced-handle.h.

GlobalHandleStoreMode

enum GlobalHandleStoreMode

strong

Enumerator
kInitializingStore
kAssigningStore

Definition at line 32 of file v8-traced-handle.h.

Function Documentation

CanHaveInternalField()

V8_EXPORT bool v8::internal::CanHaveInternalField

(

int

instance_type

)

Referenced by Object::GetAlignedPointerFromInternalField(), and Object::GetInternalField().

CopyTracedGlobalReference()

V8_EXPORT void v8::internal::CopyTracedGlobalReference	(	const internal::Address *const *	from,
		internal::Address **	to
	)

Referenced by TracedGlobal< T >::operator=(), and TracedReference< T >::operator=().

DecodeExternalPointerImpl()

V8_EXPORT Address v8::internal::DecodeExternalPointerImpl	(	const Isolate *	isolate,
		ExternalPointer_t	pointer,
		ExternalPointerTag	tag
	)

DisposeTracedGlobal()

V8_EXPORT void v8::internal::DisposeTracedGlobal

(

internal::Address *

global_handle

)

Referenced by TracedReferenceBase::Reset().

GlobalizeTracedReference()

V8_EXPORT internal::Address* v8::internal::GlobalizeTracedReference	(	internal::Isolate *	isolate,
		internal::Address *	handle,
		internal::Address *	slot,
		GlobalHandleDestructionMode	destruction_mode,
		GlobalHandleStoreMode	store_mode
	)

IsolateFromNeverReadOnlySpaceObject()

V8_EXPORT internal::Isolate* v8::internal::IsolateFromNeverReadOnlySpaceObject

(

Address

obj

)

Referenced by Context::GetEmbedderData(), and Object::GetInternalField().

MoveTracedGlobalReference()

V8_EXPORT void v8::internal::MoveTracedGlobalReference	(	internal::Address **	from,
		internal::Address **	to
	)

Referenced by TracedGlobal< T >::operator=(), and TracedReference< T >::operator=().

PerformCastCheck()

V8_INLINE void v8::internal::PerformCastCheck

(

T *

data

)

Definition at line 644 of file v8-internal.h.

PointerCompressionIsEnabled()

constexpr bool v8::internal::PointerCompressionIsEnabled ( )

constexpr

Definition at line 132 of file v8-internal.h.

References kApiSystemPointerSize, and kApiTaggedSize.

Referenced by V8::Initialize().

SandboxedExternalPointersAreEnabled()

constexpr bool v8::internal::SandboxedExternalPointersAreEnabled ( )

constexpr

Definition at line 167 of file v8-internal.h.

Referenced by V8::Initialize().

SandboxIsEnabled()

constexpr bool v8::internal::SandboxIsEnabled ( )

constexpr

Definition at line 159 of file v8-internal.h.

Referenced by V8::Initialize().

SetFinalizationCallbackTraced()

V8_EXPORT void v8::internal::SetFinalizationCallbackTraced	(	internal::Address *	location,
		void *	parameter,
		WeakCallbackInfo< void >::Callback	callback
	)

Referenced by TracedGlobal< T >::SetFinalizationCallback().

ShouldThrowOnError()

V8_EXPORT bool v8::internal::ShouldThrowOnError

(

v8::internal::Isolate *

isolate

)

Referenced by PropertyCallbackInfo< T >::ShouldThrowOnError().

SmiValuesAre31Bits()

constexpr bool v8::internal::SmiValuesAre31Bits ( )

constexpr

Definition at line 148 of file v8-internal.h.

References kSmiValueSize.

Referenced by V8::Initialize().

SmiValuesAre32Bits()

constexpr bool v8::internal::SmiValuesAre32Bits ( )

constexpr

Definition at line 149 of file v8-internal.h.

References kSmiValueSize.

Variable Documentation

GB

constexpr int GB = MB * 1024

constexpr

Definition at line 34 of file v8-internal.h.

kApiDoubleSize

const int kApiDoubleSize = sizeof(double)

Definition at line 43 of file v8-internal.h.

kApiInt32Size

const int kApiInt32Size = sizeof(int32_t)

Definition at line 44 of file v8-internal.h.

kApiInt64Size

const int kApiInt64Size = sizeof(int64_t)

Definition at line 45 of file v8-internal.h.

kApiSizetSize

const int kApiSizetSize = sizeof(size_t)

Definition at line 46 of file v8-internal.h.

kApiSystemPointerSize

const int kApiSystemPointerSize = sizeof(void*)

Configuration of tagging scheme.

Definition at line 42 of file v8-internal.h.

Referenced by Internals::GetEmbedderData(), Internals::GetRoot(), PointerCompressionIsEnabled(), and Internals::SetEmbedderData().

kApiTaggedSize

const int kApiTaggedSize = kApiSystemPointerSize

Definition at line 129 of file v8-internal.h.

Referenced by PointerCompressionIsEnabled().

KB

constexpr int KB = 1024

constexpr

Definition at line 32 of file v8-internal.h.

kExternalPointerTagMask

constexpr uint64_t kExternalPointerTagMask = 0xffff000000000000

constexpr

Definition at line 296 of file v8-internal.h.

kExternalPointerTagShift

constexpr uint64_t kExternalPointerTagShift = 48

constexpr

Definition at line 297 of file v8-internal.h.

kForwardingTag

const int kForwardingTag = 0

Definition at line 57 of file v8-internal.h.

kForwardingTagMask

const intptr_t kForwardingTagMask = (1 << kForwardingTagSize) - 1

Definition at line 59 of file v8-internal.h.

kForwardingTagSize

const int kForwardingTagSize = 2

Definition at line 58 of file v8-internal.h.

kGarbageCollectionReasonMaxValue

constexpr int kGarbageCollectionReasonMaxValue = 25

constexpr

Definition at line 655 of file v8-internal.h.

kHeapObjectTag

const int kHeapObjectTag = 1

Definition at line 49 of file v8-internal.h.

Referenced by Internals::HasHeapObjectTag(), and Internals::ReadRawField().

kHeapObjectTagMask

const intptr_t kHeapObjectTagMask = (1 << kHeapObjectTagSize) - 1

Definition at line 52 of file v8-internal.h.

Referenced by Internals::HasHeapObjectTag().

kHeapObjectTagSize

const int kHeapObjectTagSize = 2

Definition at line 51 of file v8-internal.h.

kIntptrAllBitsSet

constexpr intptr_t kIntptrAllBitsSet = intptr_t{-1}

constexpr

Definition at line 69 of file v8-internal.h.

kSmiMaxValue

const int kSmiMaxValue = static_cast<int>(PlatformSmiTagging::kSmiMaxValue)

Definition at line 147 of file v8-internal.h.

kSmiMinValue

const int kSmiMinValue = static_cast<int>(PlatformSmiTagging::kSmiMinValue)

Definition at line 146 of file v8-internal.h.

kSmiShiftSize

const int kSmiShiftSize = PlatformSmiTagging::kSmiShiftSize

Definition at line 144 of file v8-internal.h.

kSmiTag

const int kSmiTag = 0

Definition at line 62 of file v8-internal.h.

kSmiTagMask

const intptr_t kSmiTagMask = (1 << kSmiTagSize) - 1

Definition at line 64 of file v8-internal.h.

kSmiTagSize

const int kSmiTagSize = 1

Definition at line 63 of file v8-internal.h.

Referenced by SmiTagging< 4 >::SmiToInt(), and SmiTagging< 8 >::SmiToInt().

kSmiValueSize

const int kSmiValueSize = PlatformSmiTagging::kSmiValueSize

Definition at line 145 of file v8-internal.h.

Referenced by SmiValuesAre31Bits(), and SmiValuesAre32Bits().

kUintptrAllBitsSet

constexpr uintptr_t kUintptrAllBitsSet

constexpr

Initial value:

=
    static_cast<uintptr_t>(kIntptrAllBitsSet)

Definition at line 70 of file v8-internal.h.

kWeakHeapObjectTag

const int kWeakHeapObjectTag = 3

Definition at line 50 of file v8-internal.h.

MB

constexpr int MB = KB * 1024

constexpr

Definition at line 33 of file v8-internal.h.