Reland "Remove the weak list of views from array buffers"

src/heap/objects-visiting-inl.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_OBJECTS_VISITING_INL_H_
 #define V8_OBJECTS_VISITING_INL_H_
 
 
 namespace v8 {
 namespace internal {
@@ skipping 62 matching lines @@
   table_.template RegisterSpecializations<StructVisitor, kVisitStruct,
                                           kVisitStructGeneric>();
 }
 
 
 template <typename StaticVisitor>
 int StaticNewSpaceVisitor<StaticVisitor>::VisitJSArrayBuffer(
     Map* map, HeapObject* object) {
   Heap* heap = map->GetHeap();
 
-  STATIC_ASSERT(JSArrayBuffer::kWeakFirstViewOffset ==
-                JSArrayBuffer::kWeakNextOffset + kPointerSize);
   VisitPointers(heap, HeapObject::RawField(
                           object, JSArrayBuffer::BodyDescriptor::kStartOffset),
                 HeapObject::RawField(object, JSArrayBuffer::kWeakNextOffset));
   VisitPointers(
-      heap, HeapObject::RawField(
-                object, JSArrayBuffer::kWeakNextOffset + 2 * kPointerSize),
+      heap, HeapObject::RawField(object,
+                                 JSArrayBuffer::kWeakNextOffset + kPointerSize),
       HeapObject::RawField(object, JSArrayBuffer::kSizeWithInternalFields));
   return JSArrayBuffer::kSizeWithInternalFields;
 }
 
 
 template <typename StaticVisitor>
 int StaticNewSpaceVisitor<StaticVisitor>::VisitJSTypedArray(
     Map* map, HeapObject* object) {
   VisitPointers(
       map->GetHeap(),
       HeapObject::RawField(object, JSTypedArray::BodyDescriptor::kStartOffset),
-      HeapObject::RawField(object, JSTypedArray::kWeakNextOffset));
-  VisitPointers(
-      map->GetHeap(), HeapObject::RawField(
-                          object, JSTypedArray::kWeakNextOffset + kPointerSize),
       HeapObject::RawField(object, JSTypedArray::kSizeWithInternalFields));
   return JSTypedArray::kSizeWithInternalFields;
 }
 
 
 template <typename StaticVisitor>
 int StaticNewSpaceVisitor<StaticVisitor>::VisitJSDataView(Map* map,
                                                           HeapObject* object) {
   VisitPointers(
       map->GetHeap(),
       HeapObject::RawField(object, JSDataView::BodyDescriptor::kStartOffset),
-      HeapObject::RawField(object, JSDataView::kWeakNextOffset));
-  VisitPointers(
-      map->GetHeap(),
-      HeapObject::RawField(object, JSDataView::kWeakNextOffset + kPointerSize),
       HeapObject::RawField(object, JSDataView::kSizeWithInternalFields));
   return JSDataView::kSizeWithInternalFields;
 }
 
 
 template <typename StaticVisitor>
 void StaticMarkingVisitor<StaticVisitor>::Initialize() {
   table_.Register(kVisitShortcutCandidate,
                   &FixedBodyVisitor<StaticVisitor, ConsString::BodyDescriptor,
                                     void>::Visit);
@@ skipping 402 matching lines @@
       map->GetHeap(), HeapObject::RawField(object, JSRegExp::kPropertiesOffset),
       HeapObject::RawField(object, last_property_offset));
 }
 
 
 template <typename StaticVisitor>
 void StaticMarkingVisitor<StaticVisitor>::VisitJSArrayBuffer(
     Map* map, HeapObject* object) {
   Heap* heap = map->GetHeap();
 
-  STATIC_ASSERT(JSArrayBuffer::kWeakFirstViewOffset ==
-                JSArrayBuffer::kWeakNextOffset + kPointerSize);
   StaticVisitor::VisitPointers(
       heap,
       HeapObject::RawField(object, JSArrayBuffer::BodyDescriptor::kStartOffset),
       HeapObject::RawField(object, JSArrayBuffer::kWeakNextOffset));
   StaticVisitor::VisitPointers(
-      heap, HeapObject::RawField(
-                object, JSArrayBuffer::kWeakNextOffset + 2 * kPointerSize),
+      heap, HeapObject::RawField(object,
+                                 JSArrayBuffer::kWeakNextOffset + kPointerSize),
       HeapObject::RawField(object, JSArrayBuffer::kSizeWithInternalFields));
 }
 
 
 template <typename StaticVisitor>
 void StaticMarkingVisitor<StaticVisitor>::VisitJSTypedArray(
     Map* map, HeapObject* object) {
   StaticVisitor::VisitPointers(
       map->GetHeap(),
       HeapObject::RawField(object, JSTypedArray::BodyDescriptor::kStartOffset),
-      HeapObject::RawField(object, JSTypedArray::kWeakNextOffset));
-  StaticVisitor::VisitPointers(
-      map->GetHeap(), HeapObject::RawField(
-                          object, JSTypedArray::kWeakNextOffset + kPointerSize),
       HeapObject::RawField(object, JSTypedArray::kSizeWithInternalFields));
 }
 
 
 template <typename StaticVisitor>
 void StaticMarkingVisitor<StaticVisitor>::VisitJSDataView(Map* map,
                                                           HeapObject* object) {
   StaticVisitor::VisitPointers(
       map->GetHeap(),
       HeapObject::RawField(object, JSDataView::BodyDescriptor::kStartOffset),
-      HeapObject::RawField(object, JSDataView::kWeakNextOffset));
-  StaticVisitor::VisitPointers(
-      map->GetHeap(),
-      HeapObject::RawField(object, JSDataView::kWeakNextOffset + kPointerSize),
       HeapObject::RawField(object, JSDataView::kSizeWithInternalFields));
 }
 
 
 template <typename StaticVisitor>
 void StaticMarkingVisitor<StaticVisitor>::MarkMapContents(Heap* heap,
                                                           Map* map) {
   Object* raw_transitions = map->raw_transitions();
   if (TransitionArray::IsFullTransitionArray(raw_transitions)) {
     MarkTransitionArray(heap, TransitionArray::cast(raw_transitions));
@@ skipping 304 matching lines @@
 
   RelocIterator it(this, mode_mask);
   for (; !it.done(); it.next()) {
     it.rinfo()->template Visit<StaticVisitor>(heap);
   }
 }
 }
 }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_VISITING_INL_H_