Expose an API method for getting JSObject constructor name

src/heap-profiler.cc

 // Copyright 2009 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 51 matching lines @@
         CalculateNetworkSize(JSObject::cast(obj)) : obj->Size();
   }
   static void InsertIntoTree(JSObjectsClusterTree* tree,
                              const JSObjectsCluster& cluster, int size);
 };
 
 
 JSObjectsCluster Clusterizer::Clusterize(HeapObject* obj, bool fine_grain) {
   if (obj->IsJSObject()) {
     JSObject* js_obj = JSObject::cast(obj);
-    String* constructor = JSObject::cast(js_obj)->constructor_name();
+    String* constructor = GetConstructorNameForHeapProfile(
+        JSObject::cast(js_obj));
     // Differentiate Object and Array instances.
     if (fine_grain && (constructor == Heap::Object_symbol() ||
                        constructor == Heap::Array_symbol())) {
       return JSObjectsCluster(constructor, obj);
     } else {
       return JSObjectsCluster(constructor);
     }
   } else if (obj->IsString()) {
     return JSObjectsCluster(Heap::String_symbol());
   } else if (obj->IsJSGlobalPropertyCell()) {
@@ skipping 624 matching lines @@
 //
 static void StackWeakReferenceCallback(Persistent<Value> object,
                                        void* trace) {
   DeleteArray(static_cast<Address*>(trace));
   object.Dispose();
 }
 
 
 static void PrintProducerStackTrace(Object* obj, void* trace) {
   if (!obj->IsJSObject()) return;
-  String* constructor = JSObject::cast(obj)->constructor_name();
+  String* constructor = GetConstructorNameForHeapProfile(JSObject::cast(obj));
   SmartPointer<char> s_name(
       constructor->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL));
   LOG(HeapSampleJSProducerEvent(GetConstructorName(*s_name),
                                 reinterpret_cast<Address*>(trace)));
 }
 
 
 void HeapProfiler::WriteSample() {
   LOG(HeapSampleBeginEvent("Heap", "allocated"));
   LOG(HeapSampleStats(
@@ skipping 151 matching lines @@
   return cluster.can_be_coarsed() ?
       reinterpret_cast<HeapObject*>(cluster.instance()) : cluster.constructor();
 }
 
 
 static JSObjectsCluster HeapObjectAsCluster(HeapObject* object) {
   if (object->IsString()) {
     return JSObjectsCluster(String::cast(object));
   } else {
     JSObject* js_obj = JSObject::cast(object);
-    String* constructor = JSObject::cast(js_obj)->constructor_name();
+    String* constructor = GetConstructorNameForHeapProfile(
+        JSObject::cast(js_obj));
     return JSObjectsCluster(constructor, object);
   }
 }
 
 
 class CountingRetainersIterator {
  public:
   CountingRetainersIterator(const JSObjectsCluster& child_cluster,
                             HeapEntriesMap* map)
       : child_(ClusterAsHeapObject(child_cluster)), map_(map) {
@@ skipping 194 matching lines @@
   GlobalHandles::MakeWeak(handle.location(),
                           static_cast<void*>(stack.start()),
                           StackWeakReferenceCallback);
 }
 
 
 #endif  // ENABLE_LOGGING_AND_PROFILING
 
 
 } }  // namespace v8::internal