Inheritance diagram for dart::ForwardPointersVisitor:

Public Member Functions
	ForwardPointersVisitor (Thread *thread)

void	VisitPointers (ObjectPtr first, ObjectPtr last) override

void	VisitingObject (ObjectPtr obj)

Public Member Functions inherited from dart::ObjectPointerVisitor
	ObjectPointerVisitor (IsolateGroup *isolate_group)

virtual	~ObjectPointerVisitor ()

IsolateGroup *	isolate_group () const

virtual void	VisitTypedDataViewPointers (TypedDataViewPtr view, CompressedObjectPtr first, CompressedObjectPtr last)

virtual void	VisitPointers (ObjectPtr first, ObjectPtr last)=0

void	VisitCompressedPointers (uword heap_base, CompressedObjectPtr first, CompressedObjectPtr last)

void	VisitPointers (ObjectPtr *p, intptr_t len)

void	VisitPointer (ObjectPtr *p)

const char *	gc_root_type () const

void	set_gc_root_type (const char *gc_root_type)

void	clear_gc_root_type ()

virtual bool	visit_weak_persistent_handles () const

virtual bool	trace_values_through_fields () const

const ClassTable *	class_table () const

virtual bool	CanVisitSuspendStatePointers (SuspendStatePtr suspend_state)

Detailed Description

Definition at line 78 of file become.cc.

Constructor & Destructor Documentation

◆ ForwardPointersVisitor()

dart::ForwardPointersVisitor::ForwardPointersVisitor ( Thread * thread )

inlineexplicit

Definition at line 80 of file become.cc.

      : ObjectPointerVisitor(thread->isolate_group()),
        thread_(thread),
        visiting_object_(nullptr) {}

Member Function Documentation

◆ VisitingObject()

void dart::ForwardPointersVisitor::VisitingObject ( ObjectPtr obj )

inline

Definition at line 139 of file become.cc.

                                     {
    visiting_object_ = obj;
    // The incoming remembered bit may be unreliable. Clear it so we can
    // consistently reapply the barrier to all slots.
    if ((obj != nullptr) && obj->IsOldObject() &&
        obj->untag()->IsRemembered()) {
      ASSERT(!obj->IsForwardingCorpse());
      ASSERT(!obj->IsFreeListElement());
      obj->untag()->ClearRememberedBit();
    }
  }

◆ VisitPointers()

void dart::ForwardPointersVisitor::VisitPointers	(	ObjectPtr *	first,
		ObjectPtr *	last
	)

inlineoverridevirtual

Implements dart::ObjectPointerVisitor.

Definition at line 85 of file become.cc.

                                                                 {
    for (ObjectPtr* p = first; p <= last; p++) {
      ObjectPtr old_target = *p;
      ObjectPtr new_target;
      if (IsForwardingObject(old_target)) {
        new_target = GetForwardedObject(old_target);
      } else {
        // Though we do not need to update the slot's value when it is not
        // forwarded, we do need to recheck the generational barrier. In
        // particular, the remembered bit may be incorrectly false if this
        // become was the result of aborting a scavenge while visiting the
        // remembered set.
        new_target = old_target;
      }
      if (visiting_object_ == nullptr) {
        *p = new_target;
      } else if (visiting_object_->untag()->IsCardRemembered()) {
        visiting_object_->untag()->StoreArrayPointer(p, new_target, thread_);
      } else {
        visiting_object_->untag()->StorePointer(p, new_target, thread_);
      }
    }
  }

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