Changed the global object representation

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 81 matching lines @@
   V(Map, undetectable_medium_ascii_string_map)          \
   V(Map, undetectable_long_ascii_string_map)            \
   V(Map, byte_array_map)                                \
   V(Map, fixed_array_map)                               \
   V(Map, hash_table_map)                                \
   V(Map, context_map)                                   \
   V(Map, catch_context_map)                             \
   V(Map, global_context_map)                            \
   V(Map, code_map)                                      \
   V(Map, oddball_map)                                   \
+  V(Map, global_property_cell_map)                      \
   V(Map, boilerplate_function_map)                      \
   V(Map, shared_function_info_map)                      \
   V(Map, proxy_map)                                     \
   V(Map, one_word_filler_map)                           \
   V(Map, two_word_filler_map)                           \
   V(Object, nan_value)                                  \
   V(Object, undefined_value)                            \
   V(Object, minus_zero_value)                           \
   V(Object, null_value)                                 \
   V(Object, true_value)                                 \
@@ skipping 169 matching lines @@
 #endif
 
   // Allocates and initializes a new JavaScript object based on a
   // constructor.
   // Returns Failure::RetryAfterGC(requested_bytes, space) if the allocation
   // failed.
   // Please note this does not perform a garbage collection.
   static Object* AllocateJSObject(JSFunction* constructor,
                                   PretenureFlag pretenure = NOT_TENURED);
 
+  // Allocates and initializes a new JS global object based on a constructor.
+  // Returns Failure::RetryAfterGC(requested_bytes, space) if the allocation
+  // failed.
+  // Please note this does not perform a garbage collection.
+  static Object* AllocateJSGlobalObject(JSFunction* constructor);
+
   // Returns a deep copy of the JavaScript object.
   // Properties and elements are copied too.
   // Returns failure if allocation failed.
   static Object* CopyJSObject(JSObject* source);
 
   // Allocates the function prototype.
   // Returns Failure::RetryAfterGC(requested_bytes, space) if the allocation
   // failed.
   // Please note this does not perform a garbage collection.
   static Object* AllocateFunctionPrototype(JSFunction* function);
@@ skipping 100 matching lines @@
   // failed.
   // Please note this does not perform a garbage collection.
   static Object* AllocateByteArray(int length, PretenureFlag pretenure);
 
   // Allocate a non-tenured byte array of the specified length
   // Returns Failure::RetryAfterGC(requested_bytes, space) if the allocation
   // failed.
   // Please note this does not perform a garbage collection.
   static Object* AllocateByteArray(int length);
 
+  // Allocate a tenured JS global property cell.
+  // Returns Failure::RetryAfterGC(requested_bytes, space) if the allocation
+  // failed.
+  // Please note this does not perform a garbage collection.
+  static Object* AllocateJSGlobalPropertyCell(Object* value);
+
   // Allocates a fixed array initialized with undefined values
   // Returns Failure::RetryAfterGC(requested_bytes, space) if the allocation
   // failed.
   // Please note this does not perform a garbage collection.
   static Object* AllocateFixedArray(int length, PretenureFlag pretenure);
   // Allocate uninitialized, non-tenured fixed array with length elements.
   static Object* AllocateFixedArray(int length);
 
   // Make a copy of src and return it. Returns
   // Failure::RetryAfterGC(requested_bytes, space) if the allocation failed.
@@ skipping 959 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_