InitThread        184 src/execution.h   void InitThread(const ExecutionAccess& lock);
InitThread       1829 src/isolate.cc     stack_guard_.InitThread(lock);
InitThread         77 src/v8threads.cc       isolate_->stack_guard()->InitThread(access);
InitThread        186 src/v8threads.cc     isolate_->stack_guard()->InitThread(access);