Heap profiler improvements.

src/heap-profiler.h

 // 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 36 matching lines @@
 
 
 // JSObjectsCluster describes a group of JS objects that are
 // considered equivalent in terms of a particular profile.
 class JSObjectsCluster BASE_EMBEDDED {
  public:
   // These special cases are used in retainer profile.
   enum SpecialCase {
     ROOTS = 1,
     GLOBAL_PROPERTY = 2,
-    SELF = 3  // This case is used in ClustersCoarser only.
+    CODE = 3,
+    SELF = 100  // This case is used in ClustersCoarser only.
   };
 
   JSObjectsCluster() : constructor_(NULL), instance_(NULL) {}
   explicit JSObjectsCluster(String* constructor)
       : constructor_(constructor), instance_(NULL) {}
   explicit JSObjectsCluster(SpecialCase special)
       : constructor_(FromSpecialCase(special)), instance_(NULL) {}
   JSObjectsCluster(String* constructor, Object* instance)
       : constructor_(constructor), instance_(instance) {}
 
@@ skipping 22 matching lines @@
   // Allows null clusters to be printed.
   void DebugPrint(StringStream* accumulator) const;
 
  private:
   static String* FromSpecialCase(SpecialCase special) {
     // We use symbols that are illegal JS identifiers to identify special cases.
     // Their actual value is irrelevant for us.
     switch (special) {
       case ROOTS: return Heap::result_symbol();
       case GLOBAL_PROPERTY: return Heap::code_symbol();
+      case CODE: return Heap::arguments_shadow_symbol();
       case SELF: return Heap::catch_var_symbol();
       default:
         UNREACHABLE();
         return NULL;
     }
   }
 
   String* constructor_;
   Object* instance_;
 };
@@ skipping 152 matching lines @@
   static void RecordJSObjectAllocation(Object* obj);
  private:
   static bool can_log_;
 };
 
 #endif  // ENABLE_LOGGING_AND_PROFILING
 
 } }  // namespace v8::internal
 
 #endif  // V8_HEAP_PROFILER_H_