Create a separate space for global property cells

src/heap.h

 // Copyright 2006-2008 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 243 matching lines @@
   // for all addresses in either semispace.
   static Address NewSpaceStart() { return new_space_.start(); }
   static uint32_t NewSpaceMask() { return new_space_.mask(); }
   static Address NewSpaceTop() { return new_space_.top(); }
 
   static NewSpace* new_space() { return &new_space_; }
   static OldSpace* old_pointer_space() { return old_pointer_space_; }
   static OldSpace* old_data_space() { return old_data_space_; }
   static OldSpace* code_space() { return code_space_; }
   static MapSpace* map_space() { return map_space_; }
+  static GlobalPropertyCellSpace* global_property_cell_space() {
+    return global_property_cell_space_; }
   static LargeObjectSpace* lo_space() { return lo_space_; }
 
   static bool always_allocate() { return always_allocate_scope_depth_ != 0; }
   static Address always_allocate_scope_depth_address() {
     return reinterpret_cast<Address>(&always_allocate_scope_depth_);
   }
 
   static Address* NewSpaceAllocationTopAddress() {
     return new_space_.allocation_top_address();
   }
@@ skipping 556 matching lines @@
 
   static const int kMaxMapSpaceSize = 8*MB;
 
   static const int kMaxObjectSizeInNewSpace = 256*KB;
 
   static NewSpace new_space_;
   static OldSpace* old_pointer_space_;
   static OldSpace* old_data_space_;
   static OldSpace* code_space_;
   static MapSpace* map_space_;
+  static GlobalPropertyCellSpace* global_property_cell_space_;
   static LargeObjectSpace* lo_space_;
   static HeapState gc_state_;
 
   // Returns the size of object residing in non new spaces.
   static int PromotedSpaceSize();
 
   // Returns the amount of external memory registered since last global gc.
   static int PromotedExternalMemorySize();
 
   static int mc_count_;  // how many mark-compact collections happened
@@ skipping 67 matching lines @@
   // Returns either a Smi or a Number object from 'value'. If 'new_object'
   // is false, it may return a preallocated immutable object.
   static Object* SmiOrNumberFromDouble(double value,
                                        bool new_object,
                                        PretenureFlag pretenure = NOT_TENURED);
 
   // Allocate an uninitialized object in map space.  The behavior is identical
   // to Heap::AllocateRaw(size_in_bytes, MAP_SPACE), except that (a) it doesn't
   // have to test the allocation space argument and (b) can reduce code size
   // (since both AllocateRaw and AllocateRawMap are inlined).
-  static inline Object* AllocateRawMap(int size_in_bytes);
+  static inline Object* AllocateRawMap();
+
+  // Allocate an uninitialized object in global property cell space.
+  static inline Object* AllocateRawGlobalPropertyCell();
 
   // Initializes a JSObject based on its map.
   static void InitializeJSObjectFromMap(JSObject* obj,
                                         FixedArray* properties,
                                         Map* map);
 
   static bool CreateInitialMaps();
   static bool CreateInitialObjects();
 
   // These four Create*EntryStub functions are here because of a gcc-4.4 bug
@@ skipping 463 matching lines @@
   int marked_count_;
 
   // The count from the end of the previous full GC.  Will be zero if there
   // was no previous full GC.
   int previous_marked_count_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_HEAP_H_