Initial implementation of dedicated FixedArray processing.

src/profiler/heap-snapshot-generator.h

 // Copyright 2013 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_PROFILER_HEAP_SNAPSHOT_GENERATOR_H_
 #define V8_PROFILER_HEAP_SNAPSHOT_GENERATOR_H_
 
+#include <unordered_map>
+
 #include "include/v8-profiler.h"
 #include "src/base/platform/time.h"
 #include "src/objects.h"
 #include "src/profiler/strings-storage.h"
 
 namespace v8 {
 namespace internal {
 
 class AllocationTracker;
 class AllocationTraceNode;
@@ skipping 428 matching lines @@
                                           const char* name_format_string = NULL,
                                           int field_offset = -1);
 
   void SetUserGlobalReference(Object* user_global);
   void SetRootGcRootsReference();
   void SetGcRootsReference(VisitorSynchronization::SyncTag tag);
   void SetGcSubrootReference(
       VisitorSynchronization::SyncTag tag, bool is_weak, Object* child);
   const char* GetStrongGcSubrootName(Object* object);
   void TagObject(Object* obj, const char* tag);
-  void MarkAsWeakContainer(Object* object);
+  void TagFixedArraySubType(const FixedArray* array,
+                            FixedArraySubInstanceType type);
 
   HeapEntry* GetEntry(Object* obj);
 
   Heap* heap_;
   HeapSnapshot* snapshot_;
   StringsStorage* names_;
   HeapObjectsMap* heap_object_map_;
   SnapshottingProgressReportingInterface* progress_;
   SnapshotFiller* filler_;
   HeapObjectsSet objects_tags_;
   HeapObjectsSet strong_gc_subroot_names_;
   HeapObjectsSet user_roots_;
-  HeapObjectsSet weak_containers_;
+  std::unordered_map<const FixedArray*, FixedArraySubInstanceType> array_types_;
   v8::HeapProfiler::ObjectNameResolver* global_object_name_resolver_;
 
   std::vector<bool> marks_;
 
   friend class IndexedReferencesExtractor;
   friend class RootsReferencesExtractor;
 
   DISALLOW_COPY_AND_ASSIGN(V8HeapExplorer);
 };
 
@@ skipping 139 matching lines @@
   friend class HeapSnapshotJSONSerializerIterator;
 
   DISALLOW_COPY_AND_ASSIGN(HeapSnapshotJSONSerializer);
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PROFILER_HEAP_SNAPSHOT_GENERATOR_H_