Process weak references between optimized JSFunctions on scavenges.

src/objects-visiting.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 271 matching lines @@
 
   static inline int IterateBody(Map* map, HeapObject* obj) {
     return table_.GetVisitor(map)(map, obj);
   }
 
   static inline void VisitPointers(Heap* heap, Object** start, Object** end) {
     for (Object** p = start; p < end; p++) StaticVisitor::VisitPointer(heap, p);
   }
 
  private:
+  static inline int VisitJSFunction(Map* map, HeapObject* object) {
+    Heap* heap = map->GetHeap();
+    VisitPointers(heap,
+                  HeapObject::RawField(object, JSFunction::kPropertiesOffset),
+                  HeapObject::RawField(object, JSFunction::kCodeEntryOffset));

[Michael Starzinger, 2012/04/17 09:53:18]

Can we put a comment here saying that we don't visit the code entry slot because
it will always point to old-space or something like that?

+    VisitPointers(
+        heap,
+        HeapObject::RawField(object,
+                             JSFunction::kCodeEntryOffset + kPointerSize),
+        HeapObject::RawField(object,
+                             JSFunction::kNonWeakFieldsEndOffset));
+    return JSFunction::kSize;
+  }
+
   static inline int VisitByteArray(Map* map, HeapObject* object) {
     return reinterpret_cast<ByteArray*>(object)->ByteArraySize();
   }
 
   static inline int VisitFixedDoubleArray(Map* map, HeapObject* object) {
     int length = reinterpret_cast<FixedDoubleArray*>(object)->length();
     return FixedDoubleArray::SizeFor(length);
   }
 
   static inline int VisitJSObject(Map* map, HeapObject* object) {
@@ skipping 41 matching lines @@
 
 
 template<typename StaticVisitor>
 VisitorDispatchTable<typename StaticNewSpaceVisitor<StaticVisitor>::Callback>
   StaticNewSpaceVisitor<StaticVisitor>::table_;
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_VISITING_H_