Per-isolate v8::Locker and v8::Unlocker

src/top.cc

 // 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 59 matching lines @@
   failed_access_check_callback_ = NULL;
   save_context_ = NULL;
   catcher_ = NULL;
 }
 
 
 void ThreadLocalTop::Initialize() {
   InitializeInternal();
 #ifdef USE_SIMULATOR
 #ifdef V8_TARGET_ARCH_ARM
-  simulator_ = Simulator::current(Isolate::Current());
+  simulator_ = Simulator::current(isolate_);
 #elif V8_TARGET_ARCH_MIPS
-  simulator_ = Simulator::current(Isolate::Current());
+  simulator_ = Simulator::current(isolate_);
 #endif
 #endif
   thread_id_ = ThreadId::Current();
 }
 
 
 v8::TryCatch* ThreadLocalTop::TryCatchHandler() {
   return TRY_CATCH_FROM_ADDRESS(try_catch_handler_address());
 }
 
@@ skipping 875 matching lines @@
   thread_local_top()->simulator_ = Simulator::current(this);
 #endif
 #endif
   if (RuntimeProfiler::IsEnabled() && current_vm_state() == JS) {
     RuntimeProfiler::IsolateEnteredJS(this);
   }
   return from + sizeof(ThreadLocalTop);
 }
 
 } }  // namespace v8::internal