Thread fields related to object monitors( _current_pending_monitor, _current_pending_monitor_is_from_java and _current_waiting_monitor) should be moved to the JavaThread class.
_Stalled is also moved to the JavaThread class and _OnTrap and _TypeTag
are removed since they are unused.
_Stalled is also moved to the JavaThread class and _OnTrap and _TypeTag
are removed since they are unused.