Refactor the code cache to handle large number of properties on the global ob...

src/heap.cc

 // 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 1188 matching lines @@
 
   Map* map = reinterpret_cast<Map*>(result);
   map->set_map(meta_map());
   map->set_instance_type(instance_type);
   map->set_prototype(null_value());
   map->set_constructor(null_value());
   map->set_instance_size(instance_size);
   map->set_inobject_properties(0);
   map->set_pre_allocated_property_fields(0);
   map->set_instance_descriptors(empty_descriptor_array());
-  map->set_code_cache(empty_fixed_array());
+  map->set_code_cache(undefined_value());
   map->set_unused_property_fields(0);
   map->set_bit_field(0);
   map->set_bit_field2(1 << Map::kIsExtensible);
 
   // If the map object is aligned fill the padding area with Smi 0 objects.
   if (Map::kPadStart < Map::kSize) {
     memset(reinterpret_cast<byte*>(map) + Map::kPadStart - kHeapObjectTag,
            0,
            Map::kSize - Map::kPadStart);
   }
   return map;
 }
 
 
+Object* Heap::AllocateCodeCache() {
+  Object* result = AllocateStruct(CODE_CACHE_TYPE);
+  if (result->IsFailure()) return result;
+  CodeCache* code_cache = CodeCache::cast(result);
+  code_cache->set_default_cache(empty_fixed_array());
+  code_cache->set_normal_type_cache(undefined_value());
+  return code_cache;
+}
+
+
 const Heap::StringTypeTable Heap::string_type_table[] = {
 #define STRING_TYPE_ELEMENT(type, size, name, camel_name)                      \
   {type, size, k##camel_name##MapRootIndex},
   STRING_TYPE_LIST(STRING_TYPE_ELEMENT)
 #undef STRING_TYPE_ELEMENT
 };
 
 
 const Heap::ConstantSymbolTable Heap::constant_symbol_table[] = {
 #define CONSTANT_SYMBOL_ELEMENT(name, contents)                                \
@@ skipping 36 matching lines @@
   if (obj->IsFailure()) return false;
   set_null_value(obj);
 
   // Allocate the empty descriptor array.
   obj = AllocateEmptyFixedArray();
   if (obj->IsFailure()) return false;
   set_empty_descriptor_array(DescriptorArray::cast(obj));
 
   // Fix the instance_descriptors for the existing maps.
   meta_map()->set_instance_descriptors(empty_descriptor_array());
-  meta_map()->set_code_cache(empty_fixed_array());
+  meta_map()->set_code_cache(undefined_value());
 
   fixed_array_map()->set_instance_descriptors(empty_descriptor_array());
-  fixed_array_map()->set_code_cache(empty_fixed_array());
+  fixed_array_map()->set_code_cache(undefined_value());
 
   oddball_map()->set_instance_descriptors(empty_descriptor_array());
-  oddball_map()->set_code_cache(empty_fixed_array());
+  oddball_map()->set_code_cache(undefined_value());
 
   // Fix prototype object for existing maps.
   meta_map()->set_prototype(null_value());
   meta_map()->set_constructor(null_value());
 
   fixed_array_map()->set_prototype(null_value());
   fixed_array_map()->set_constructor(null_value());
 
   oddball_map()->set_prototype(null_value());
   oddball_map()->set_constructor(null_value());
@@ skipping 2922 matching lines @@
 void ExternalStringTable::TearDown() {
   new_space_strings_.Free();
   old_space_strings_.Free();
 }
 
 
 List<Object*> ExternalStringTable::new_space_strings_;
 List<Object*> ExternalStringTable::old_space_strings_;
 
 } }  // namespace v8::internal