Improve mark-compact object grouping interface.

src/api.cc

 // Copyright 2007-2008 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 2610 matching lines @@
 }
 
 
 void V8::SetFailedAccessCheckCallbackFunction(
       FailedAccessCheckCallback callback) {
   if (IsDeadCheck("v8::V8::SetFailedAccessCheckCallbackFunction()")) return;
   i::Top::SetFailedAccessCheckCallback(callback);
 }
 
 
-void V8::AddObjectToGroup(void* group_id, Persistent<Object> obj) {
-  if (IsDeadCheck("v8::V8::AddObjectToGroup()")) return;
-  i::GlobalHandles::AddToGroup(group_id, reinterpret_cast<i::Object**>(*obj));
+void V8::AddObjectGroup(Persistent<Value>* objects, size_t length) {
+  if (IsDeadCheck("v8::V8::AddObjectGroup()")) return;
+  STATIC_ASSERT(sizeof(Persistent<Value>) == sizeof(i::Object**));
+  i::GlobalHandles::AddGroup(reinterpret_cast<i::Object***>(objects), length);
 }
 
 
 int V8::AdjustAmountOfExternalAllocatedMemory(int change_in_bytes) {
   if (IsDeadCheck("v8::V8::AdjustAmountOfExternalAllocatedMemory()")) return 0;
   return i::Heap::AdjustAmountOfExternalAllocatedMemory(change_in_bytes);
 }
 
 
 void V8::SetGlobalGCPrologueCallback(GCCallback callback) {
@@ skipping 352 matching lines @@
       reinterpret_cast<HandleScopeImplementer*>(storage);
   List<void**>* blocks_of_archived_thread = thread_local->Blocks();
   ImplementationUtilities::HandleScopeData* handle_data_of_archived_thread =
       &thread_local->handle_scope_data_;
   Iterate(v, blocks_of_archived_thread, handle_data_of_archived_thread);
 
   return storage + ArchiveSpacePerThread();
 }
 
 } }  // namespace v8::internal