dart::FieldDeserializationCluster Class Reference

Inheritance diagram for dart::FieldDeserializationCluster:

Public Member Functions
	FieldDeserializationCluster ()
	~FieldDeserializationCluster ()
void	ReadAlloc (Deserializer *d) override
void	ReadFill (Deserializer *d_) override
void	PostLoad (Deserializer *d, const Array &refs) override
Public Member Functions inherited from dart::DeserializationCluster
	DeserializationCluster (const char *name, bool is_canonical=false, bool is_immutable=false)
virtual	~DeserializationCluster ()
const char *	name () const
bool	is_canonical () const
Public Member Functions inherited from dart::ZoneAllocated
	ZoneAllocated ()
void *	operator new (size_t size)
void *	operator new (size_t size, Zone *zone)
void	operator delete (void *pointer)

Additional Inherited Members
Protected Member Functions inherited from dart::DeserializationCluster
void	ReadAllocFixedSize (Deserializer *deserializer, intptr_t instance_size)
Protected Attributes inherited from dart::DeserializationCluster
const char *const	name_
const bool	is_canonical_
const bool	is_immutable_
intptr_t	start_index_
intptr_t	stop_index_

Detailed Description

Definition at line 2221 of file app_snapshot.cc.

Constructor & Destructor Documentation

FieldDeserializationCluster()

dart::FieldDeserializationCluster::FieldDeserializationCluster ( )

inline

Definition at line 2223 of file app_snapshot.cc.

: DeserializationCluster("Field") {}

~FieldDeserializationCluster()

dart::FieldDeserializationCluster::~FieldDeserializationCluster ( )

inline

Definition at line 2224 of file app_snapshot.cc.

{}

Member Function Documentation

PostLoad()

void dart::FieldDeserializationCluster::PostLoad ( Deserializer *  d, const Array &  refs  )

inlineoverridevirtual

Reimplemented from dart::DeserializationCluster.

Definition at line 2279 of file app_snapshot.cc.

                                                             {
    Field& field = Field::Handle(d->zone());
    if (!IsolateGroup::Current()->use_field_guards()) {
      for (intptr_t i = start_index_, n = stop_index_; i < n; i++) {
        field ^= refs.At(i);
        field.set_guarded_cid_unsafe(kDynamicCid);
        field.set_is_nullable_unsafe(true);
        field.set_guarded_list_length_unsafe(Field::kNoFixedLength);
        field.set_guarded_list_length_in_object_offset_unsafe(
            Field::kUnknownLengthOffset);
        field.set_static_type_exactness_state_unsafe(
            StaticTypeExactnessState::NotTracking());
      }
    } else {
      for (intptr_t i = start_index_, n = stop_index_; i < n; i++) {
        field ^= refs.At(i);
        field.InitializeGuardedListLengthInObjectOffset(/*unsafe=*/true);
      }
    }
  }

ReadAlloc()

void dart::FieldDeserializationCluster::ReadAlloc ( Deserializer *  d )

inlineoverridevirtual

Implements dart::DeserializationCluster.

Definition at line 2226 of file app_snapshot.cc.

                                           {
    ReadAllocFixedSize(d, Field::InstanceSize());
  }

ReadFill()

void dart::FieldDeserializationCluster::ReadFill ( Deserializer *  d_ )

inlineoverridevirtual

Implements dart::DeserializationCluster.

Definition at line 2230 of file app_snapshot.cc.

                                           {
    Deserializer::Local d(d_);
 
    ASSERT(!is_canonical());  // Never canonical.
#if !defined(DART_PRECOMPILED_RUNTIME)
    Snapshot::Kind kind = d_->kind();
#endif
    for (intptr_t id = start_index_, n = stop_index_; id < n; id++) {
      FieldPtr field = static_cast<FieldPtr>(d.Ref(id));
      Deserializer::InitializeHeader(field, kFieldCid, Field::InstanceSize());
      d.ReadFromTo(field);
#if !defined(DART_PRECOMPILED_RUNTIME)
      ASSERT(d_->kind() != Snapshot::kFullAOT);
      field->untag()->guarded_list_length_ = static_cast<SmiPtr>(d.ReadRef());
      if (kind == Snapshot::kFullJIT) {
        field->untag()->dependent_code_ =
            static_cast<WeakArrayPtr>(d.ReadRef());
      }
      field->untag()->token_pos_ = d.ReadTokenPosition();
      field->untag()->end_token_pos_ = d.ReadTokenPosition();
      field->untag()->guarded_cid_ = d.ReadCid();
      field->untag()->is_nullable_ = d.ReadCid();
      const int8_t static_type_exactness_state = d.Read<int8_t>();
#if defined(TARGET_ARCH_X64)
      field->untag()->static_type_exactness_state_ =
          static_type_exactness_state;
#else
      // We might produce core snapshots using X64 VM and then consume
      // them in IA32 or ARM VM. In which case we need to simply ignore
      // static type exactness state written into snapshot because non-X64
      // builds don't have this feature enabled.
      // TODO(dartbug.com/34170) Support other architectures.
      USE(static_type_exactness_state);
      field->untag()->static_type_exactness_state_ =
          StaticTypeExactnessState::NotTracking().Encode();
#endif  // defined(TARGET_ARCH_X64)
      field->untag()->kernel_offset_ = d.Read<uint32_t>();
#endif
      field->untag()->kind_bits_ = d.Read<uint16_t>();
 
      field->untag()->host_offset_or_field_id_ =
          static_cast<SmiPtr>(d.ReadRef());
#if !defined(DART_PRECOMPILED_RUNTIME)
      field->untag()->target_offset_ =
          Smi::Value(field->untag()->host_offset_or_field_id());
#endif  //  !defined(DART_PRECOMPILED_RUNTIME)
    }
  }

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

• third_party/dart-lang/sdk/runtime/vm/app_snapshot.cc