src/hotspot/share/runtime/thread.cpp

Concurrent class unloading

   _oops_do_parity = 0;
   _threads_hazard_ptr = NULL;
   _threads_list_ptr = NULL;
   _nested_threads_hazard_ptr_cnt = 0;
   _rcu_counter = 0;
+  _in_nmethod_entry_barrier = false;
 
   // the handle mark links itself to last_handle_mark
   new HandleMark(this);
 
   // plain initialization