dart::FinalizeVMIsolateVisitor Class Reference

Inheritance diagram for dart::FinalizeVMIsolateVisitor:

Public Member Functions
	FinalizeVMIsolateVisitor ()
void	VisitObject (ObjectPtr obj)
Public Member Functions inherited from dart::ObjectVisitor
	ObjectVisitor ()
virtual	~ObjectVisitor ()
virtual void	VisitObject (ObjectPtr obj)=0

Detailed Description

Definition at line 1411 of file object.cc.

Constructor & Destructor Documentation

FinalizeVMIsolateVisitor()

dart::FinalizeVMIsolateVisitor::FinalizeVMIsolateVisitor ( )

inline

Definition at line 1413 of file object.cc.

      : counter_(1337)
#endif
  {
  }

Member Function Documentation

VisitObject()

void dart::FinalizeVMIsolateVisitor::VisitObject ( ObjectPtr  obj )

inlinevirtual

Implements dart::ObjectVisitor.

Definition at line 1420 of file object.cc.

                                  {
    // Free list elements should never be marked.
    ASSERT(!obj->untag()->IsMarked());
    // No forwarding corpses in the VM isolate.
    ASSERT(!obj->IsForwardingCorpse());
    if (!obj->IsFreeListElement()) {
      obj->untag()->SetMarkBitUnsynchronized();
      Object::FinalizeReadOnlyObject(obj);
#if defined(HASH_IN_OBJECT_HEADER)
      // These objects end up in the read-only VM isolate which is shared
      // between isolates, so we have to prepopulate them with identity hash
      // codes, since we can't add hash codes later.
      if (Object::GetCachedHash(obj) == 0) {
        // Some classes have identity hash codes that depend on their contents,
        // not per object.
        ASSERT(!obj->IsStringInstance());
        if (obj == Object::null()) {
          Object::SetCachedHashIfNotSet(obj, kNullIdentityHash);
        } else if (obj == Object::bool_true().ptr()) {
          Object::SetCachedHashIfNotSet(obj, kTrueIdentityHash);
        } else if (obj == Object::bool_false().ptr()) {
          Object::SetCachedHashIfNotSet(obj, kFalseIdentityHash);
        } else if (!obj->IsMint() && !obj->IsDouble()) {
          counter_ += 2011;  // The year Dart was announced and a prime.
          counter_ &= 0x3fffffff;
          if (counter_ == 0) counter_++;
          Object::SetCachedHashIfNotSet(obj, counter_);
        }
      }
#endif
#if !defined(DART_PRECOMPILED_RUNTIME)
      if (obj->IsClass()) {
        // Won't be able to update read-only VM isolate classes if implementors
        // are discovered later.
        static_cast<ClassPtr>(obj)->untag()->implementor_cid_ = kDynamicCid;
      }
#endif
    }
  }

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

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