Bookkeeping for allocation site pretenuring

src/heap.h

 // Copyright 2012 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 1438 matching lines @@
   void TracePathToGlobal();
 #endif
 
   // Callback function passed to Heap::Iterate etc.  Copies an object if
   // necessary, the object might be promoted to an old space.  The caller must
   // ensure the precondition that the object is (a) a heap object and (b) in
   // the heap's from space.
   static inline void ScavengePointer(HeapObject** p);
   static inline void ScavengeObject(HeapObject** p, HeapObject* object);
 
+  // An object may have an AllocationSite associated with it through a trailing
+  // AllocationMemento. Its feedback should be updated when objects are found
+  // in the heap.
+  static inline void UpdateAllocationSiteFeedback(HeapObject* object);
+
   // Support for partial snapshots.  After calling this we have a linear
   // space to write objects in each space.
   void ReserveSpace(int *sizes, Address* addresses);
 
   //
   // Support for the API.
   //
 
   bool CreateApiObjects();
 
@@ skipping 416 matching lines @@
   int always_allocate_scope_depth_;
   int linear_allocation_scope_depth_;
 
   // For keeping track of context disposals.
   int contexts_disposed_;
 
   int global_ic_age_;
 
   bool flush_monomorphic_ics_;
 
-  // AllocationMementos found in new space.
-  int allocation_mementos_found_;
-
   int scan_on_scavenge_pages_;
 
   NewSpace new_space_;
   OldSpace* old_pointer_space_;
   OldSpace* old_data_space_;
   OldSpace* code_space_;
   MapSpace* map_space_;
   CellSpace* cell_space_;
   PropertyCellSpace* property_cell_space_;
   LargeObjectSpace* lo_space_;
@@ skipping 195 matching lines @@
       int length, PretenureFlag pretenure);
 
   // Allocate an initialized fixed array with the given filler value.
   MUST_USE_RESULT MaybeObject* AllocateFixedArrayWithFiller(
       int length, PretenureFlag pretenure, Object* filler);
 
   // Initializes a JSObject based on its map.
   void InitializeJSObjectFromMap(JSObject* obj,
                                  FixedArray* properties,
                                  Map* map);
+  void InitializeAllocationMemento(AllocationMemento* memento,
+                                   AllocationSite* allocation_site);
 
   bool CreateInitialMaps();
   bool CreateInitialObjects();
 
   // These five Create*EntryStub functions are here and forced to not be inlined
   // because of a gcc-4.4 bug that assigns wrong vtable entries.
   NO_INLINE(void CreateJSEntryStub());
   NO_INLINE(void CreateJSConstructEntryStub());
 
   void CreateFixedStubs();
@@ skipping 961 matching lines @@
   DisallowHeapAllocation no_allocation;  // i.e. no gc allowed.
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(PathTracer);
 };
 #endif  // DEBUG
 
 } }  // namespace v8::internal
 
 #endif  // V8_HEAP_H_