dart::UnitDeserializationRoots Class Reference

Inheritance diagram for dart::UnitDeserializationRoots:

Public Member Functions
	UnitDeserializationRoots (const LoadingUnit &unit)
void	AddBaseObjects (Deserializer *d) override
void	ReadRoots (Deserializer *d) override
void	PostLoad (Deserializer *d, const Array &refs) override
Public Member Functions inherited from dart::DeserializationRoots
virtual	~DeserializationRoots ()
virtual void	AddBaseObjects (Deserializer *deserializer)=0
virtual void	ReadRoots (Deserializer *deserializer)=0
virtual void	PostLoad (Deserializer *deserializer, const Array &refs)=0

Detailed Description

Definition at line 7334 of file app_snapshot.cc.

Constructor & Destructor Documentation

UnitDeserializationRoots()

dart::UnitDeserializationRoots::UnitDeserializationRoots ( const LoadingUnit &  unit )

inlineexplicit

Definition at line 7336 of file app_snapshot.cc.

: unit_(unit) {}

Member Function Documentation

AddBaseObjects()

void dart::UnitDeserializationRoots::AddBaseObjects ( Deserializer *  d )

inlineoverridevirtual

Implements dart::DeserializationRoots.

Definition at line 7338 of file app_snapshot.cc.

                                                {
    const Array& base_objects =
        Array::Handle(LoadingUnit::Handle(unit_.parent()).base_objects());
    for (intptr_t i = kFirstReference; i < base_objects.Length(); i++) {
      d->AddBaseObject(base_objects.At(i));
    }
  }

PostLoad()

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

inlineoverridevirtual

Implements dart::DeserializationRoots.

Definition at line 7407 of file app_snapshot.cc.

                                                             {
    d->EndInstructions();
    unit_.set_base_objects(refs);
  }

ReadRoots()

void dart::UnitDeserializationRoots::ReadRoots ( Deserializer *  d )

inlineoverridevirtual

Implements dart::DeserializationRoots.

Definition at line 7346 of file app_snapshot.cc.

                                           {
    deferred_start_index_ = d->ReadUnsigned();
    deferred_stop_index_ = deferred_start_index_ + d->ReadUnsigned();
    for (intptr_t id = deferred_start_index_; id < deferred_stop_index_; id++) {
      CodePtr code = static_cast<CodePtr>(d->Ref(id));
      ASSERT(!Code::IsUnknownDartCode(code));
      d->ReadInstructions(code, /*deferred=*/false);
      if (code->untag()->owner_->IsHeapObject() &&
          code->untag()->owner_->IsFunction()) {
        FunctionPtr func = static_cast<FunctionPtr>(code->untag()->owner_);
        uword entry_point = code->untag()->entry_point_;
        ASSERT(entry_point != 0);
        func->untag()->entry_point_ = entry_point;
        uword unchecked_entry_point = code->untag()->unchecked_entry_point_;
        ASSERT(unchecked_entry_point != 0);
        func->untag()->unchecked_entry_point_ = unchecked_entry_point;
#if defined(DART_PRECOMPILED_RUNTIME)
        if (func->untag()->data()->IsHeapObject() &&
            func->untag()->data()->IsClosureData()) {
          // For closure functions in bare instructions mode, also update the
          // cache inside the static implicit closure object, if any.
          auto data = static_cast<ClosureDataPtr>(func->untag()->data());
          if (data->untag()->closure() != Closure::null()) {
            // Closure functions only have one entry point.
            ASSERT_EQUAL(entry_point, unchecked_entry_point);
            data->untag()->closure()->untag()->entry_point_ = entry_point;
          }
        }
#endif
      }
      code->untag()->code_source_map_ =
          static_cast<CodeSourceMapPtr>(d->ReadRef());
    }
 
    ObjectPoolPtr pool =
        d->isolate_group()->object_store()->global_object_pool();
    const intptr_t length = pool->untag()->length_;
    uint8_t* entry_bits = pool->untag()->entry_bits();
    for (intptr_t i = d->ReadUnsigned(); i < length; i += d->ReadUnsigned()) {
      auto entry_type = ObjectPool::TypeBits::decode(entry_bits[i]);
      ASSERT(entry_type == ObjectPool::EntryType::kTaggedObject);
      // The existing entry will usually be null, but it might also be an
      // equivalent object that was duplicated in another loading unit.
      pool->untag()->data()[i].raw_obj_ = d->ReadRef();
    }
 
    // Reinitialize the dispatch table by rereading the table's serialization
    // in the root snapshot.
    auto isolate_group = d->isolate_group();
    if (isolate_group->dispatch_table_snapshot() != nullptr) {
      ReadStream stream(isolate_group->dispatch_table_snapshot(),
                        isolate_group->dispatch_table_snapshot_size());
      const GrowableObjectArray& tables = GrowableObjectArray::Handle(
          isolate_group->object_store()->instructions_tables());
      InstructionsTable& root_table = InstructionsTable::Handle();
      root_table ^= tables.At(0);
      d->ReadDispatchTable(&stream, /*deferred=*/true, root_table,
                           deferred_start_index_, deferred_stop_index_);
    }
  }

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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