#include <objects.h>

Inheritance diagram for v8::internal::WeakHashTable:

Collaboration diagram for v8::internal::WeakHashTable:

Public Member Functions
Object *	Lookup (Handle< Object > key)

void	Zap (Object *value)

Public Member Functions inherited from v8::internal::HashTable< WeakHashTable, WeakHashTableShape< 2 >, Handle< Object > >
uint32_t	Hash (Handle< Object > key)

uint32_t	HashForObject (Handle< Object > key, Object *object)

int	NumberOfElements ()

int	NumberOfDeletedElements ()

int	Capacity ()

void	ElementAdded ()

void	ElementRemoved ()

void	ElementsRemoved (int n)

Object *	KeyAt (int entry)

bool	IsKey (Object *k)

void	IteratePrefix (ObjectVisitor *visitor)

void	IterateElements (ObjectVisitor *visitor)

	INLINE (static uint32_t GetProbeOffset(uint32_t n))

int	FindEntry (Handle< Object > key)

int	FindEntry (Isolate *isolate, Handle< Object > key)

void	Rehash (Handle< Object > key)

Public Member Functions inherited from v8::internal::FixedArray
Object *	get (int index)

void	set (int index, Object *value)

bool	is_the_hole (int index)

void	set (int index, Smi *value)

void	set (int index, Object *value, WriteBarrierMode mode)

void	set_undefined (int index)

void	set_null (int index)

void	set_the_hole (int index)

Object **	GetFirstElementAddress ()

bool	ContainsOnlySmisOrHoles ()

Object **	data_start ()

void	FillWithHoles (int from, int to)

void	Shrink (int length)

void	CopyTo (int pos, FixedArray *dest, int dest_pos, int len)

Object **	RawFieldOfElementAt (int index)

void	SwapPairs (FixedArray *numbers, int i, int j)

void	SortPairs (FixedArray *numbers, uint32_t len)

Public Member Functions inherited from v8::internal::FixedArrayBase
int	length () const

void	set_length (int value)

int	synchronized_length () const

void	synchronized_set_length (int value)

Public Member Functions inherited from v8::internal::HeapObject
Map *	map () const

void	set_map (Map *value)

void	set_map_no_write_barrier (Map *value)

Map *	synchronized_map ()

MapWord	synchronized_map_word () const

void	synchronized_set_map (Map *value)

void	synchronized_set_map_no_write_barrier (Map *value)

void	synchronized_set_map_word (MapWord map_word)

MapWord	map_word () const

void	set_map_word (MapWord map_word)

Heap *	GetHeap () const

Isolate *	GetIsolate () const

Address	address ()

void	Iterate (ObjectVisitor *v)

void	IterateBody (InstanceType type, int object_size, ObjectVisitor *v)

int	Size ()

bool	MayContainRawValues ()

int	SizeFromMap (Map *map)

WriteBarrierMode	GetWriteBarrierMode (const DisallowHeapAllocation &promise)

void	HeapObjectShortPrint (OStream &os)

	STATIC_ASSERT (kMapOffset==Internals::kHeapObjectMapOffset)

Public Member Functions inherited from v8::internal::Object
bool	IsObject () const

	INLINE (bool IsFixedArrayBase() const)

	INLINE (bool IsExternal() const)

	INLINE (bool IsAccessorInfo() const)

	INLINE (bool IsStruct() const)

	INLINE (bool IsSpecObject()) const

	INLINE (bool IsSpecFunction()) const

	INLINE (bool IsTemplateInfo()) const

	INLINE (bool IsNameDictionary() const)

	INLINE (bool IsSeededNumberDictionary() const)

	INLINE (bool IsUnseededNumberDictionary() const)

	INLINE (bool IsOrderedHashSet() const)

	INLINE (bool IsOrderedHashMap() const)

bool	IsCallable () const

	INLINE (bool IsUndefined() const)

	INLINE (bool IsNull() const)

	INLINE (bool IsTheHole() const)

	INLINE (bool IsException() const)

	INLINE (bool IsUninitialized() const)

	INLINE (bool IsTrue() const)

	INLINE (bool IsFalse() const)

	INLINE (bool IsArgumentsMarker() const)

	INLINE (bool IsFiller() const)

double	Number ()

	INLINE (bool IsNaN() const)

	INLINE (bool IsMinusZero() const)

bool	ToInt32 (int32_t *value)

bool	ToUint32 (uint32_t *value)

Representation	OptimalRepresentation ()

bool	FitsRepresentation (Representation representation)

Handle< HeapType >	OptimalType (Isolate *isolate, Representation representation)

bool	HasValidElements ()

bool	HasSpecificClassOf (String *name)

bool	BooleanValue ()

Object *	GetHash ()

bool	SameValue (Object *other)

bool	SameValueZero (Object *other)

bool	ToArrayIndex (uint32_t *index)

bool	IsStringObjectWithCharacterAt (uint32_t index)

void	VerifyApiCallResultType ()

void	ShortPrint (FILE *out=stdout)

void	ShortPrint (StringStream *accumulator)

Static Public Member Functions
static MUST_USE_RESULT Handle< WeakHashTable >	Put (Handle< WeakHashTable > table, Handle< Object > key, Handle< Object > value)

Static Public Member Functions inherited from v8::internal::HashTable< WeakHashTable, WeakHashTableShape< 2 >, Handle< Object > >
static MUST_USE_RESULT Handle< WeakHashTable >	New (Isolate *isolate, int at_least_space_for, MinimumCapacity capacity_option=USE_DEFAULT_MINIMUM_CAPACITY, PretenureFlag pretenure=NOT_TENURED)

static int	ComputeCapacity (int at_least_space_for)

Static Public Member Functions inherited from v8::internal::FixedArray
static Handle< Object >	get (Handle< FixedArray > array, int index)

static Handle< FixedArray >	CopySize (Handle< FixedArray > array, int new_length, PretenureFlag pretenure=NOT_TENURED)

static MUST_USE_RESULT MaybeHandle< FixedArray >	AddKeysFromArrayLike (Handle< FixedArray > content, Handle< JSObject > array)

static MUST_USE_RESULT MaybeHandle< FixedArray >	UnionOfKeys (Handle< FixedArray > first, Handle< FixedArray > second)

static int	SizeFor (int length)

static int	OffsetOfElementAt (int index)

Static Public Member Functions inherited from v8::internal::HeapObject
static HeapObject *	FromAddress (Address address)

static Object **	RawField (HeapObject *obj, int offset)

static void	UpdateMapCodeCache (Handle< HeapObject > object, Handle< Name > name, Handle< Code > code)

Static Public Member Functions inherited from v8::internal::Object
static Handle< Object >	NewStorageFor (Isolate *isolate, Handle< Object > object, Representation representation)

static Handle< Object >	WrapForRead (Isolate *isolate, Handle< Object > object, Representation representation)

static MaybeHandle< JSReceiver >	ToObject (Isolate *isolate, Handle< Object > object)

static MaybeHandle< JSReceiver >	ToObject (Isolate *isolate, Handle< Object > object, Handle< Context > context)

static MUST_USE_RESULT MaybeHandle< Smi >	ToSmi (Isolate *isolate, Handle< Object > object)

static MUST_USE_RESULT MaybeHandle< Object >	GetProperty (LookupIterator *it)

static MUST_USE_RESULT MaybeHandle< Object >	SetProperty (Handle< Object > object, Handle< Name > key, Handle< Object > value, StrictMode strict_mode, StoreFromKeyed store_mode=MAY_BE_STORE_FROM_KEYED)

static MUST_USE_RESULT MaybeHandle< Object >	SetProperty (LookupIterator *it, Handle< Object > value, StrictMode strict_mode, StoreFromKeyed store_mode, StorePropertyMode data_store_mode=NORMAL_PROPERTY)

static MUST_USE_RESULT MaybeHandle< Object >	WriteToReadOnlyProperty (LookupIterator *it, Handle< Object > value, StrictMode strict_mode)

static Handle< Object >	SetDataProperty (LookupIterator *it, Handle< Object > value)

static MUST_USE_RESULT MaybeHandle< Object >	AddDataProperty (LookupIterator *it, Handle< Object > value, PropertyAttributes attributes, StrictMode strict_mode, StoreFromKeyed store_mode)

static MUST_USE_RESULT MaybeHandle< Object >	GetPropertyOrElement (Handle< Object > object, Handle< Name > key)

static MUST_USE_RESULT MaybeHandle< Object >	GetProperty (Isolate isolate, Handle< Object > object, const char key)

static MUST_USE_RESULT MaybeHandle< Object >	GetProperty (Handle< Object > object, Handle< Name > key)

static MUST_USE_RESULT MaybeHandle< Object >	GetPropertyWithAccessor (Handle< Object > receiver, Handle< Name > name, Handle< JSObject > holder, Handle< Object > structure)

static MUST_USE_RESULT MaybeHandle< Object >	SetPropertyWithAccessor (Handle< Object > receiver, Handle< Name > name, Handle< Object > value, Handle< JSObject > holder, Handle< Object > structure, StrictMode strict_mode)

static MUST_USE_RESULT MaybeHandle< Object >	GetPropertyWithDefinedGetter (Handle< Object > receiver, Handle< JSReceiver > getter)

static MUST_USE_RESULT MaybeHandle< Object >	SetPropertyWithDefinedSetter (Handle< Object > receiver, Handle< JSReceiver > setter, Handle< Object > value)

static MUST_USE_RESULT MaybeHandle< Object >	GetElement (Isolate *isolate, Handle< Object > object, uint32_t index)

static MUST_USE_RESULT MaybeHandle< Object >	GetElementWithReceiver (Isolate *isolate, Handle< Object > object, Handle< Object > receiver, uint32_t index)

static Handle< Smi >	GetOrCreateHash (Isolate *isolate, Handle< Object > object)

Private Types
typedef HashTable< WeakHashTable, WeakHashTableShape< 2 >, Handle< Object > >	DerivedHashTable

Private Member Functions
void	AddEntry (int entry, Handle< Object > key, Handle< Object > value)

Static Private Member Functions
static int	EntryToValueIndex (int entry)

Friends
class	MarkCompactCollector

Additional Inherited Members
Public Types inherited from v8::internal::Object
enum	StoreFromKeyed { MAY_BE_STORE_FROM_KEYED , CERTAINLY_NOT_STORE_FROM_KEYED }

enum	StorePropertyMode { NORMAL_PROPERTY , SUPER_PROPERTY }

Static Public Attributes inherited from v8::internal::HashTable< WeakHashTable, WeakHashTableShape< 2 >, Handle< Object > >
static const int	kNumberOfElementsIndex

static const int	kNumberOfDeletedElementsIndex

static const int	kCapacityIndex

static const int	kPrefixStartIndex

static const int	kElementsStartIndex

static const int	kEntrySize

static const int	kElementsStartOffset

static const int	kCapacityOffset

static const int	kNotFound

static const int	kMaxCapacity

Static Public Attributes inherited from v8::internal::FixedArray
static const int	kMaxSize = 128 * MB * kPointerSize

static const int	kMaxLength = (kMaxSize - kHeaderSize) / kPointerSize

Static Public Attributes inherited from v8::internal::FixedArrayBase
static const int	kLengthOffset = HeapObject::kHeaderSize

static const int	kHeaderSize = kLengthOffset + kPointerSize

Static Public Attributes inherited from v8::internal::HeapObject
static const int	kMapOffset = Object::kHeaderSize

static const int	kHeaderSize = kMapOffset + kPointerSize

Static Public Attributes inherited from v8::internal::Object
static const int	kHeaderSize = 0

Protected Member Functions inherited from v8::internal::HashTable< WeakHashTable, WeakHashTableShape< 2 >, Handle< Object > >
uint32_t	FindInsertionEntry (uint32_t hash)

void	SetNumberOfElements (int nof)

void	SetNumberOfDeletedElements (int nod)

void	SetCapacity (int capacity)

Protected Member Functions inherited from v8::internal::HeapObject
void	IteratePointers (ObjectVisitor *v, int start, int end)

void	IteratePointer (ObjectVisitor *v, int offset)

void	IterateNextCodeLink (ObjectVisitor *v, int offset)

Static Protected Member Functions inherited from v8::internal::HashTable< WeakHashTable, WeakHashTableShape< 2 >, Handle< Object > >
static int	EntryToIndex (int entry)

static uint32_t	GetProbe (uint32_t hash, uint32_t number, uint32_t size)

static uint32_t	FirstProbe (uint32_t hash, uint32_t size)

static uint32_t	NextProbe (uint32_t last, uint32_t number, uint32_t size)

static MUST_USE_RESULT Handle< WeakHashTable >	Shrink (Handle< WeakHashTable > table, Handle< Object > key)

static MUST_USE_RESULT Handle< WeakHashTable >	EnsureCapacity (Handle< WeakHashTable > table, int n, Handle< Object > key, PretenureFlag pretenure=NOT_TENURED)

Static Protected Member Functions inherited from v8::internal::FixedArray
static void	NoWriteBarrierSet (FixedArray array, int index, Object value)

static void	NoIncrementalWriteBarrierSet (FixedArray array, int index, Object value)

Detailed Description

Definition at line 4021 of file objects.h.

Member Typedef Documentation

◆ DerivedHashTable

typedef HashTable< WeakHashTable, WeakHashTableShape<2>, Handle<Object> > v8::internal::WeakHashTable::DerivedHashTable

private

Definition at line 4025 of file objects.h.

Member Function Documentation

◆ AddEntry()

void v8::internal::WeakHashTable::AddEntry	(	int	entry,
		Handle< Object >	key,
		Handle< Object >	value
	)

private

Definition at line 15398 of file objects.cc.

                                                    {
   DisallowHeapAllocation no_allocation;
   // TODO(ulan): Skipping write barrier is a temporary solution to avoid
   // memory leaks. Remove this once we have special visitor for weak fixed
   // arrays.
   set(EntryToIndex(entry), *key, SKIP_WRITE_BARRIER);
   set(EntryToValueIndex(entry), *value, SKIP_WRITE_BARRIER);
   ElementAdded();
 }

References v8::internal::FixedArray::set(), and v8::internal::SKIP_WRITE_BARRIER.

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◆ EntryToValueIndex()

static int v8::internal::WeakHashTable::EntryToValueIndex ( int entry )

inlinestaticprivate

Definition at line 4054 of file objects.h.

                                                  {
     return EntryToIndex(entry) + 1;
   }

Referenced by v8::internal::MarkCompactCollector::ClearNonLiveReferences().

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◆ Lookup()

Object * v8::internal::WeakHashTable::Lookup ( Handle< Object > key )

Definition at line 15367 of file objects.cc.

                                                 {
   DisallowHeapAllocation no_gc;
   DCHECK(IsKey(*key));
   int entry = FindEntry(key);
   if (entry == kNotFound) return GetHeap()->the_hole_value();
   return get(EntryToValueIndex(entry));
 }

References DCHECK, v8::internal::FixedArray::get(), and v8::internal::HeapObject::GetHeap().

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◆ Put()

Handle< WeakHashTable > v8::internal::WeakHashTable::Put	(	Handle< WeakHashTable >	table,
		Handle< Object >	key,
		Handle< Object >	value
	)

static

Definition at line 15376 of file objects.cc.

                                                                {
   DCHECK(table->IsKey(*key));
   int entry = table->FindEntry(key);
   // Key is already in table, just overwrite value.
   if (entry != kNotFound) {
     // TODO(ulan): Skipping write barrier is a temporary solution to avoid
     // memory leaks. Remove this once we have special visitor for weak fixed
     // arrays.
     table->set(EntryToValueIndex(entry), *value, SKIP_WRITE_BARRIER);
     return table;
   }
  
   // Check whether the hash table should be extended.
   table = EnsureCapacity(table, 1, key, TENURED);
  
   table->AddEntry(table->FindInsertionEntry(table->Hash(key)), key, value);
   return table;
 }

References DCHECK, v8::internal::SKIP_WRITE_BARRIER, and v8::internal::TENURED.

Referenced by v8::internal::Heap::AddWeakObjectToCodeDependency().

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◆ Zap()

void v8::internal::WeakHashTable::Zap ( Object * value )

inline

Definition at line 4040 of file objects.h.

                           {
     int capacity = Capacity();
     for (int i = 0; i < capacity; i++) {
       set(EntryToIndex(i), value);
       set(EntryToValueIndex(i), value);
     }
   }

References v8::internal::Smi::value().

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Friends And Related Function Documentation

◆ MarkCompactCollector

friend class MarkCompactCollector

friend

Definition at line 4049 of file objects.h.

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

/mnt/V8SourceCode/src/objects.h
/mnt/V8SourceCode/src/objects.cc

Public Member Functions

Static Public Member Functions

Private Types

Private Member Functions

Static Private Member Functions

Friends

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ DerivedHashTable

Member Function Documentation

◆ AddEntry()

◆ EntryToValueIndex()

◆ Lookup()

◆ Put()

◆ Zap()

Friends And Related Function Documentation

◆ MarkCompactCollector