dart::UnitSerializationRoots Class Reference

Inheritance diagram for dart::UnitSerializationRoots:

Public Member Functions
	UnitSerializationRoots (LoadingUnitSerializationData *unit)
void	AddBaseObjects (Serializer *s)
void	PushRoots (Serializer *s)
void	WriteRoots (Serializer *s)
Public Member Functions inherited from dart::SerializationRoots
virtual	~SerializationRoots ()
virtual void	AddBaseObjects (Serializer *serializer)=0
virtual void	PushRoots (Serializer *serializer)=0
virtual void	WriteRoots (Serializer *serializer)=0
virtual const CompressedStackMaps &	canonicalized_stack_map_entries () const

Detailed Description

Definition at line 7256 of file app_snapshot.cc.

Constructor & Destructor Documentation

UnitSerializationRoots()

dart::UnitSerializationRoots::UnitSerializationRoots ( LoadingUnitSerializationData *  unit )

inlineexplicit

Definition at line 7258 of file app_snapshot.cc.

      : unit_(unit) {}

Member Function Documentation

AddBaseObjects()

void dart::UnitSerializationRoots::AddBaseObjects ( Serializer *  s )

inlinevirtual

Implements dart::SerializationRoots.

Definition at line 7261 of file app_snapshot.cc.

                                     {
    ZoneGrowableArray<Object*>* objects = unit_->parent()->objects();
    for (intptr_t i = 0; i < objects->length(); i++) {
      s->AddBaseObject(objects->At(i)->ptr());
    }
  }

PushRoots()

void dart::UnitSerializationRoots::PushRoots ( Serializer *  s )

inlinevirtual

Implements dart::SerializationRoots.

Definition at line 7268 of file app_snapshot.cc.

                                {
    for (auto deferred_object : *unit_->deferred_objects()) {
      ASSERT(deferred_object->IsCode());
      CodePtr code = static_cast<CodePtr>(deferred_object->ptr());
      ObjectPoolPtr pool = code->untag()->object_pool_;
      if (pool != ObjectPool::null()) {
        const intptr_t length = pool->untag()->length_;
        uint8_t* entry_bits = pool->untag()->entry_bits();
        for (intptr_t i = 0; i < length; i++) {
          auto entry_type = ObjectPool::TypeBits::decode(entry_bits[i]);
          if (entry_type == ObjectPool::EntryType::kTaggedObject) {
            s->Push(pool->untag()->data()[i].raw_obj_);
          }
        }
      }
      s->Push(code->untag()->code_source_map_);
    }
  }

WriteRoots()

void dart::UnitSerializationRoots::WriteRoots ( Serializer *  s )

inlinevirtual

Implements dart::SerializationRoots.

Definition at line 7287 of file app_snapshot.cc.

                                 {
#if defined(DART_PRECOMPILER)
    intptr_t start_index = 0;
    intptr_t num_deferred_objects = unit_->deferred_objects()->length();
    if (num_deferred_objects != 0) {
      start_index = s->RefId(unit_->deferred_objects()->At(0)->ptr());
      ASSERT(start_index > 0);
    }
    s->WriteUnsigned(start_index);
    s->WriteUnsigned(num_deferred_objects);
    for (intptr_t i = 0; i < num_deferred_objects; i++) {
      const Object* deferred_object = (*unit_->deferred_objects())[i];
      ASSERT(deferred_object->IsCode());
      CodePtr code = static_cast<CodePtr>(deferred_object->ptr());
      ASSERT(s->RefId(code) == (start_index + i));
      ASSERT(!Code::IsDiscarded(code));
      s->WriteInstructions(code->untag()->instructions_,
                           code->untag()->unchecked_offset_, code, false);
      s->WriteRootRef(code->untag()->code_source_map_, "deferred-code");
    }
 
    ObjectPoolPtr pool =
        s->isolate_group()->object_store()->global_object_pool();
    const intptr_t length = pool->untag()->length_;
    uint8_t* entry_bits = pool->untag()->entry_bits();
    intptr_t last_write = 0;
    for (intptr_t i = 0; i < length; i++) {
      auto entry_type = ObjectPool::TypeBits::decode(entry_bits[i]);
      if (entry_type == ObjectPool::EntryType::kTaggedObject) {
        if (s->IsWritten(pool->untag()->data()[i].raw_obj_)) {
          intptr_t skip = i - last_write;
          s->WriteUnsigned(skip);
          s->WriteRootRef(pool->untag()->data()[i].raw_obj_,
                          "deferred-literal");
          last_write = i;
        }
      }
    }
    s->WriteUnsigned(length - last_write);
#endif
  }

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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