// Make zombies

void JavaThread::make_zombies() {

      for(StackFrameStream fst(this); !fst.is_done(); fst.next()) {
        if (fst.current()->can_be_deoptimized()) {
          // it is a Java nmethod
          nmethod* nm = CodeCache::find_nmethod(fst.current()->pc());
          nm->make_not_entrant();
        }
      }
    }