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v8::internal::FastSmiOrObjectElementsAccessor< FastElementsAccessorSubclass, KindTraits > Class Template Reference
+ Inheritance diagram for v8::internal::FastSmiOrObjectElementsAccessor< FastElementsAccessorSubclass, KindTraits >:
+ Collaboration diagram for v8::internal::FastSmiOrObjectElementsAccessor< FastElementsAccessorSubclass, KindTraits >:

Public Member Functions

 FastSmiOrObjectElementsAccessor (const char *name)
 
- Public Member Functions inherited from v8::internal::FastElementsAccessor< FastElementsAccessorSubclass, KindTraits >
 FastElementsAccessor (const char *name)
 
- Public Member Functions inherited from v8::internal::ElementsAccessor
 ElementsAccessor (const char *name)
 
virtual ~ElementsAccessor ()
 
const char * name () const
 
bool HasElement (Handle< Object > receiver, Handle< JSObject > holder, uint32_t key)
 
MUST_USE_RESULT MaybeHandle< Object > Get (Handle< Object > receiver, Handle< JSObject > holder, uint32_t key)
 
MUST_USE_RESULT PropertyAttributes GetAttributes (Handle< Object > receiver, Handle< JSObject > holder, uint32_t key)
 
MUST_USE_RESULT MaybeHandle< AccessorPair > GetAccessorPair (Handle< Object > receiver, Handle< JSObject > holder, uint32_t key)
 
void CopyElements (Handle< JSObject > from_holder, Handle< FixedArrayBase > to, ElementsKind from_kind)
 
MUST_USE_RESULT MaybeHandle< FixedArray > AddElementsToFixedArray (Handle< Object > receiver, Handle< JSObject > holder, Handle< FixedArray > to)
 

Static Public Member Functions

static void CopyElementsImpl (FixedArrayBase *from, uint32_t from_start, FixedArrayBase *to, ElementsKind from_kind, uint32_t to_start, int packed_size, int copy_size)
 
static void SetFastElementsCapacityAndLength (Handle< JSObject > obj, uint32_t capacity, uint32_t length)
 
- Static Public Member Functions inherited from v8::internal::ElementsAccessor
static ElementsAccessor * ForKind (ElementsKind elements_kind)
 
static ElementsAccessor * ForArray (Handle< FixedArrayBase > array)
 
static void InitializeOncePerProcess ()
 
static void TearDown ()
 

Additional Inherited Members

- Static Public Attributes inherited from v8::internal::ElementsAccessor
static const int kCopyToEnd = -1
 
static const int kCopyToEndAndInitializeToHole = -2
 
- Protected Types inherited from v8::internal::FastElementsAccessor< FastElementsAccessorSubclass, KindTraits >
typedef KindTraits::BackingStore BackingStore
 
- Protected Types inherited from v8::internal::ElementsAccessorBase< FastElementsAccessorSubclass, KindTraits >
typedef KindTraits ElementsTraits
 
typedef ElementsTraitsParam::BackingStore BackingStore
 
- Protected Member Functions inherited from v8::internal::FastElementsAccessor< FastElementsAccessorSubclass, KindTraits >
virtual MaybeHandle< Object > Delete (Handle< JSObject > obj, uint32_t key, JSReceiver::DeleteMode mode) FINAL OVERRIDE
 
- Protected Member Functions inherited from v8::internal::ElementsAccessorBase< FastElementsAccessorSubclass, KindTraits >
 ElementsAccessorBase (const char *name)
 
virtual ElementsKind kind () const FINAL OVERRIDE
 
virtual void Validate (Handle< JSObject > holder) FINAL OVERRIDE
 
virtual bool HasElement (Handle< Object > receiver, Handle< JSObject > holder, uint32_t key, Handle< FixedArrayBase > backing_store) FINAL OVERRIDE
 
virtual MUST_USE_RESULT MaybeHandle< Object > Get (Handle< Object > receiver, Handle< JSObject > holder, uint32_t key, Handle< FixedArrayBase > backing_store) FINAL OVERRIDE
 
virtual MUST_USE_RESULT PropertyAttributes GetAttributes (Handle< Object > receiver, Handle< JSObject > holder, uint32_t key, Handle< FixedArrayBase > backing_store) FINAL OVERRIDE
 
virtual MUST_USE_RESULT MaybeHandle< AccessorPair > GetAccessorPair (Handle< Object > receiver, Handle< JSObject > holder, uint32_t key, Handle< FixedArrayBase > backing_store) FINAL OVERRIDE
 
virtual MUST_USE_RESULT MaybeHandle< Object > SetLength (Handle< JSArray > array, Handle< Object > length) FINAL OVERRIDE
 
virtual void SetCapacityAndLength (Handle< JSArray > array, int capacity, int length) FINAL OVERRIDE
 
virtual void CopyElements (Handle< FixedArrayBase > from, uint32_t from_start, ElementsKind from_kind, Handle< FixedArrayBase > to, uint32_t to_start, int copy_size) FINAL OVERRIDE
 
virtual void CopyElements (JSObject *from_holder, uint32_t from_start, ElementsKind from_kind, Handle< FixedArrayBase > to, uint32_t to_start, int copy_size) FINAL OVERRIDE
 
virtual MaybeHandle< FixedArray > AddElementsToFixedArray (Handle< Object > receiver, Handle< JSObject > holder, Handle< FixedArray > to, Handle< FixedArrayBase > from) FINAL OVERRIDE
 
virtual uint32_t GetCapacity (Handle< FixedArrayBase > backing_store) FINAL OVERRIDE
 
virtual uint32_t GetKeyForIndex (Handle< FixedArrayBase > backing_store, uint32_t index) FINAL OVERRIDE
 
- Static Protected Member Functions inherited from v8::internal::FastElementsAccessor< FastElementsAccessorSubclass, KindTraits >
static Handle< Object > SetLengthWithoutNormalize (Handle< FixedArrayBase > backing_store, Handle< JSArray > array, Handle< Object > length_object, uint32_t length)
 
static Handle< Object > DeleteCommon (Handle< JSObject > obj, uint32_t key, JSReceiver::DeleteMode mode)
 
static bool HasElementImpl (Handle< Object > receiver, Handle< JSObject > holder, uint32_t key, Handle< FixedArrayBase > backing_store)
 
static void ValidateContents (Handle< JSObject > holder, int length)
 
- Static Protected Member Functions inherited from v8::internal::ElementsAccessorBase< FastElementsAccessorSubclass, KindTraits >
static void ValidateContents (Handle< JSObject > holder, int length)
 
static void ValidateImpl (Handle< JSObject > holder)
 
static bool HasElementImpl (Handle< Object > receiver, Handle< JSObject > holder, uint32_t key, Handle< FixedArrayBase > backing_store)
 
static MUST_USE_RESULT MaybeHandle< Object > GetImpl (Handle< Object > receiver, Handle< JSObject > obj, uint32_t key, Handle< FixedArrayBase > backing_store)
 
static MUST_USE_RESULT PropertyAttributes GetAttributesImpl (Handle< Object > receiver, Handle< JSObject > obj, uint32_t key, Handle< FixedArrayBase > backing_store)
 
static MUST_USE_RESULT MaybeHandle< AccessorPair > GetAccessorPairImpl (Handle< Object > receiver, Handle< JSObject > obj, uint32_t key, Handle< FixedArrayBase > backing_store)
 
static MUST_USE_RESULT MaybeHandle< Object > SetLengthImpl (Handle< JSObject > obj, Handle< Object > length, Handle< FixedArrayBase > backing_store)
 
static void SetFastElementsCapacityAndLength (Handle< JSObject > obj, int capacity, int length)
 
static void CopyElementsImpl (FixedArrayBase *from, uint32_t from_start, FixedArrayBase *to, ElementsKind from_kind, uint32_t to_start, int packed_size, int copy_size)
 
static uint32_t GetCapacityImpl (Handle< FixedArrayBase > backing_store)
 
static uint32_t GetKeyForIndexImpl (Handle< FixedArrayBase > backing_store, uint32_t index)
 

Detailed Description

template<typename FastElementsAccessorSubclass, typename KindTraits>
class v8::internal::FastSmiOrObjectElementsAccessor< FastElementsAccessorSubclass, KindTraits >

Definition at line 1068 of file elements.cc.

Constructor & Destructor Documentation

◆ FastSmiOrObjectElementsAccessor()

template<typename FastElementsAccessorSubclass , typename KindTraits >
v8::internal::FastSmiOrObjectElementsAccessor< FastElementsAccessorSubclass, KindTraits >::FastSmiOrObjectElementsAccessor ( const char *  name)
inlineexplicit

Definition at line 1071 of file elements.cc.

1072  : FastElementsAccessor<FastElementsAccessorSubclass,
1073  KindTraits>(name) {}
v8::internal::ElementsAccessor::name
const char * name() const
Definition: elements.h:24
v8::internal::FastElementsAccessor::FastElementsAccessor
FastElementsAccessor(const char *name)
Definition: elements.cc:876

Member Function Documentation

◆ CopyElementsImpl()

template<typename FastElementsAccessorSubclass , typename KindTraits >
static void v8::internal::FastSmiOrObjectElementsAccessor< FastElementsAccessorSubclass, KindTraits >::CopyElementsImpl ( FixedArrayBase *  from,
uint32_t  from_start,
FixedArrayBase *  to,
ElementsKind  from_kind,
uint32_t  to_start,
int  packed_size,
int  copy_size 
)
inlinestatic

Definition at line 1080 of file elements.cc.

1083  {
1084  DisallowHeapAllocation no_gc;
1085  ElementsKind to_kind = KindTraits::Kind;
1086  switch (from_kind) {
1087  case FAST_SMI_ELEMENTS:
1088  case FAST_HOLEY_SMI_ELEMENTS:
1089  case FAST_ELEMENTS:
1090  case FAST_HOLEY_ELEMENTS:
1091  CopyObjectToObjectElements(from, from_kind, from_start, to, to_kind,
1092  to_start, copy_size);
1093  break;
1094  case FAST_DOUBLE_ELEMENTS:
1095  case FAST_HOLEY_DOUBLE_ELEMENTS: {
1096  AllowHeapAllocation allow_allocation;
1097  CopyDoubleToObjectElements(
1098  from, from_start, to, to_kind, to_start, copy_size);
1099  break;
1100  }
1101  case DICTIONARY_ELEMENTS:
1102  CopyDictionaryToObjectElements(from, from_start, to, to_kind, to_start,
1103  copy_size);
1104  break;
1105  case SLOPPY_ARGUMENTS_ELEMENTS: {
1106  // TODO(verwaest): This is a temporary hack to support extending
1107  // SLOPPY_ARGUMENTS_ELEMENTS in SetFastElementsCapacityAndLength.
1108  // This case should be UNREACHABLE().
1109  FixedArray* parameter_map = FixedArray::cast(from);
1110  FixedArrayBase* arguments = FixedArrayBase::cast(parameter_map->get(1));
1111  ElementsKind from_kind = ElementsKindForArray(arguments);
1112  CopyElementsImpl(arguments, from_start, to, from_kind,
1113  to_start, packed_size, copy_size);
1114  break;
1115  }
1116 #define TYPED_ARRAY_CASE(Type, type, TYPE, ctype, size) \
1117  case EXTERNAL_##TYPE##_ELEMENTS: \
1118  case TYPE##_ELEMENTS: \
1119  UNREACHABLE();
1120  TYPED_ARRAYS(TYPED_ARRAY_CASE)
1121 #undef TYPED_ARRAY_CASE
1122  }
1123  }
v8::internal::FastSmiOrObjectElementsAccessor::CopyElementsImpl
static void CopyElementsImpl(FixedArrayBase *from, uint32_t from_start, FixedArrayBase *to, ElementsKind from_kind, uint32_t to_start, int packed_size, int copy_size)
Definition: elements.cc:1080
TYPED_ARRAY_CASE
#define TYPED_ARRAY_CASE(Type, type, TYPE, ctype, size)
to
enable harmony numeric enable harmony object literal extensions Optimize object Array DOM strings and string trace pretenuring decisions of HAllocate instructions Enables optimizations which favor memory size over execution speed maximum source size in bytes considered for a single inlining maximum cumulative number of AST nodes considered for inlining trace the tracking of allocation sites deoptimize every n garbage collections perform array bounds checks elimination analyze liveness of environment slots and zap dead values flushes the cache of optimized code for closures on every GC allow uint32 values on optimize frames if they are used only in safe operations track concurrent recompilation artificial compilation delay in ms do not emit check maps for constant values that have a leaf deoptimize the optimized code if the layout of the maps changes enable context specialization in TurboFan execution budget before interrupt is triggered max percentage of megamorphic generic ICs to allow optimization enable use of SAHF instruction if enable use of VFP3 instructions if available enable use of NEON instructions if enable use of SDIV and UDIV instructions if enable use of MLS instructions if enable loading bit constant by means of movw movt instruction enable unaligned accesses for enable use of d16 d31 registers on ARM this requires VFP3 force all emitted branches to be in long enable alignment of csp to bytes on platforms which prefer the register to always be expose gc extension under the specified name show built in functions in stack traces use random jit cookie to mask large constants minimum length for automatic enable preparsing CPU profiler sampling interval in microseconds trace out of bounds accesses to external arrays default size of stack region v8 is allowed to maximum length of function source code printed in a stack trace min size of a semi the new space consists of two semi spaces print one trace line following each garbage collection do not print trace line after scavenger collection print cumulative GC statistics in only print modified registers Trace simulator debug messages Implied by trace sim abort randomize hashes to avoid predictable hash Fixed seed to use to hash property Print the time it takes to deserialize the snapshot A filename with extra code to be included in the A file to write the raw snapshot bytes to(mksnapshot only)") DEFINE_STRING(raw_context_file
v8::internal::DisallowHeapAllocation
PerThreadAssertScopeDebugOnly< HEAP_ALLOCATION_ASSERT, false > DisallowHeapAllocation
Definition: assert-scope.h:110
v8::internal::AllowHeapAllocation
PerThreadAssertScopeDebugOnly< HEAP_ALLOCATION_ASSERT, true > AllowHeapAllocation
Definition: assert-scope.h:114
v8::internal::ElementsKindForArray
static ElementsKind ElementsKindForArray(FixedArrayBase *array)
Definition: elements.cc:1039
v8::internal::FAST_HOLEY_DOUBLE_ELEMENTS
@ FAST_HOLEY_DOUBLE_ELEMENTS
Definition: elements-kind.h:27
v8::internal::SLOPPY_ARGUMENTS_ELEMENTS
@ SLOPPY_ARGUMENTS_ELEMENTS
Definition: elements-kind.h:31
v8::internal::FAST_HOLEY_SMI_ELEMENTS
@ FAST_HOLEY_SMI_ELEMENTS
Definition: elements-kind.h:17
v8::internal::CopyDictionaryToObjectElements
static void CopyDictionaryToObjectElements(FixedArrayBase *from_base, uint32_t from_start, FixedArrayBase *to_base, ElementsKind to_kind, uint32_t to_start, int raw_copy_size)
Definition: elements.cc:200
v8::internal::CopyDoubleToObjectElements
static void CopyDoubleToObjectElements(FixedArrayBase *from_base, uint32_t from_start, FixedArrayBase *to_base, ElementsKind to_kind, uint32_t to_start, int raw_copy_size)
Definition: elements.cc:253
v8::internal::CopyObjectToObjectElements
static void CopyObjectToObjectElements(FixedArrayBase *from_base, ElementsKind from_kind, uint32_t from_start, FixedArrayBase *to_base, ElementsKind to_kind, uint32_t to_start, int raw_copy_size)
Definition: elements.cc:150
TYPED_ARRAYS
#define TYPED_ARRAYS(V)
Definition: objects.h:4433

References v8::internal::CopyDictionaryToObjectElements(), v8::internal::CopyDoubleToObjectElements(), v8::internal::CopyObjectToObjectElements(), v8::internal::DICTIONARY_ELEMENTS, v8::internal::ElementsKindForArray(), v8::internal::FAST_DOUBLE_ELEMENTS, v8::internal::FAST_ELEMENTS, v8::internal::FAST_HOLEY_DOUBLE_ELEMENTS, v8::internal::FAST_HOLEY_ELEMENTS, v8::internal::FAST_HOLEY_SMI_ELEMENTS, v8::internal::FAST_SMI_ELEMENTS, v8::internal::FixedArray::get(), v8::internal::SLOPPY_ARGUMENTS_ELEMENTS, to(), TYPED_ARRAY_CASE, and TYPED_ARRAYS.

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◆ SetFastElementsCapacityAndLength()

template<typename FastElementsAccessorSubclass , typename KindTraits >
static void v8::internal::FastSmiOrObjectElementsAccessor< FastElementsAccessorSubclass, KindTraits >::SetFastElementsCapacityAndLength ( Handle< JSObject >  obj,
uint32_t  capacity,
uint32_t  length 
)
inlinestatic

Definition at line 1126 of file elements.cc.

1129  {
1130  JSObject::SetFastElementsCapacitySmiMode set_capacity_mode =
1131  obj->HasFastSmiElements()
1132  ? JSObject::kAllowSmiElements
1133  : JSObject::kDontAllowSmiElements;
1134  JSObject::SetFastElementsCapacityAndLength(
1135  obj, capacity, length, set_capacity_mode);
1136  }
v8::internal::JSObject::SetFastElementsCapacityAndLength
static Handle< FixedArray > SetFastElementsCapacityAndLength(Handle< JSObject > object, int capacity, int length, SetFastElementsCapacitySmiMode smi_mode)
Definition: objects.cc:10982

References v8::internal::JSObject::kAllowSmiElements, v8::internal::JSObject::kDontAllowSmiElements, and v8::internal::JSObject::SetFastElementsCapacityAndLength().

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