Function unsupported_thread_option

extern/boost/boost/thread/exceptions.hpp:158–161

          {}

          unsupported_thread_option( int ev )
          : base_type(ev, "boost::unsupported_thread_option")
          {
          }
          unsupported_thread_option( int ev, const char * what_arg )
          : base_type(ev, what_arg)
          {