dart::DeltaEncodedTypedDataDeserializationCluster Class Reference

Inheritance diagram for dart::DeltaEncodedTypedDataDeserializationCluster:

Public Member Functions
	DeltaEncodedTypedDataDeserializationCluster ()
	~DeltaEncodedTypedDataDeserializationCluster ()
void	ReadAlloc (Deserializer *d) override
void	ReadFill (Deserializer *d_) override
Public Member Functions inherited from dart::DeserializationCluster
	DeserializationCluster (const char *name, bool is_canonical=false, bool is_immutable=false)
virtual	~DeserializationCluster ()
virtual void	ReadAlloc (Deserializer *deserializer)=0
virtual void	ReadFill (Deserializer *deserializer)=0
virtual void	PostLoad (Deserializer *deserializer, const Array &refs)
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 5965 of file app_snapshot.cc.

Constructor & Destructor Documentation

DeltaEncodedTypedDataDeserializationCluster()

dart::DeltaEncodedTypedDataDeserializationCluster::DeltaEncodedTypedDataDeserializationCluster ( )

inline

Definition at line 5968 of file app_snapshot.cc.

      : DeserializationCluster("DeltaEncodedTypedData") {}

~DeltaEncodedTypedDataDeserializationCluster()

dart::DeltaEncodedTypedDataDeserializationCluster::~DeltaEncodedTypedDataDeserializationCluster ( )

inline

Definition at line 5970 of file app_snapshot.cc.

{}

Member Function Documentation

ReadAlloc()

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

inlineoverridevirtual

Implements dart::DeserializationCluster.

Definition at line 5972 of file app_snapshot.cc.

                                           {
    start_index_ = d->next_index();
    const intptr_t count = d->ReadUnsigned();
    for (intptr_t i = 0; i < count; i++) {
      const intptr_t length_in_bytes = d->ReadUnsigned();
      d->AssignRef(d->Allocate(TypedData::InstanceSize(length_in_bytes)));
    }
    stop_index_ = d->next_index();
  }

ReadFill()

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

inlineoverridevirtual

Implements dart::DeserializationCluster.

Definition at line 5982 of file app_snapshot.cc.

                                           {
    Deserializer::Local d(d_);
    TypedData& typed_data = TypedData::Handle(d_->zone());
 
    ASSERT(!is_canonical());  // Never canonical.
 
    for (intptr_t id = start_index_, n = stop_index_; id < n; id++) {
      TypedDataPtr data = static_cast<TypedDataPtr>(d.Ref(id));
      const intptr_t encoded_length = d.ReadUnsigned();
      const intptr_t length = encoded_length >> 1;
      const intptr_t cid = (encoded_length & 0x1) == 0
                               ? kTypedDataUint16ArrayCid
                               : kTypedDataUint32ArrayCid;
      const intptr_t element_size = TypedData::ElementSizeInBytes(cid);
      const intptr_t length_in_bytes = length * element_size;
      Deserializer::InitializeHeader(data, cid,
                                     TypedData::InstanceSize(length_in_bytes));
      data->untag()->length_ = Smi::New(length);
      data->untag()->RecomputeDataField();
      intptr_t value = 0;
      typed_data = data;
      for (intptr_t j = 0; j < length; ++j) {
        value += d.ReadUnsigned();
        if (cid == kTypedDataUint16ArrayCid) {
          typed_data.SetUint16(j << 1, static_cast<uint16_t>(value));
        } else {
          typed_data.SetUint32(j << 2, value);
        }
      }
    }
  }

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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