Prototype of mark-and-compact support for Harmony weak maps.

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 103 matching lines @@
     kVisitStruct9,
     kVisitStructGeneric,
 
     kVisitConsString,
     kVisitOddball,
     kVisitCode,
     kVisitMap,
     kVisitPropertyCell,
     kVisitSharedFunctionInfo,
     kVisitJSFunction,
+    kVisitJSWeakMap,
     kVisitJSRegExp,
 
     kVisitorIdCount,
     kMinObjectSizeInWords = 2
   };
 
   // Visitor ID should fit in one byte.
   STATIC_ASSERT(kVisitorIdCount <= 256);
 
   // Determine which specialized visitor should be used for given instance type
@@ skipping 176 matching lines @@
                                       Context::ScavengeBodyDescriptor,
                                       int>::Visit);
 
     table_.Register(kVisitByteArray, &VisitByteArray);
 
     table_.Register(kVisitSharedFunctionInfo,
                     &FixedBodyVisitor<StaticVisitor,
                                       SharedFunctionInfo::BodyDescriptor,
                                       int>::Visit);
 
-    table_.Register(kVisitJSRegExp, &VisitJSRegExp);
+    table_.Register(kVisitJSWeakMap, &VisitJSObject);
+
+    table_.Register(kVisitJSRegExp, &VisitJSObject);
 
     table_.Register(kVisitSeqAsciiString, &VisitSeqAsciiString);
 
     table_.Register(kVisitSeqTwoByteString, &VisitSeqTwoByteString);
 
     table_.Register(kVisitJSFunction,
                     &JSObjectVisitor::
                         template VisitSpecialized<JSFunction::kSize>);
 
     table_.RegisterSpecializations<DataObjectVisitor,
@@ skipping 18 matching lines @@
  private:
   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) {
+    return JSObjectVisitor::Visit(map, object);
+  }
+
   static inline int VisitSeqAsciiString(Map* map, HeapObject* object) {
     return SeqAsciiString::cast(object)->
         SeqAsciiStringSize(map->instance_type());
   }
 
-  static inline int VisitJSRegExp(Map* map, HeapObject* object) {
-    return JSObjectVisitor::Visit(map, object);
-  }
-
   static inline int VisitSeqTwoByteString(Map* map, HeapObject* object) {
     return SeqTwoByteString::cast(object)->
         SeqTwoByteStringSize(map->instance_type());
   }
 
   class DataObjectVisitor {
    public:
     template<int object_size>
     static inline int VisitSpecialized(Map* map, HeapObject* object) {
       return object_size;
@@ skipping 68 matching lines @@
 
   for (; !it.done(); it.next()) {
     it.rinfo()->template Visit<StaticVisitor>(heap);
   }
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_VISITING_H_