src/hotspot/share/gc/g1/g1ConcurrentRefine.cpp

rev 47863 : imported patch 8190426-lazy-init-refinement-threads
rev 47864 : [mq]: 8190426-sangheon-review
rev 47865 : [mq]: 8190426-stefanj-review

*** 102,112 ****
    if (thread_to_activate == NULL) {
      // Still need to create the thread...
      _threads[worker_id] = create_refinement_thread(worker_id, false);
      thread_to_activate = _threads[worker_id];
    }
!   if (thread_to_activate != NULL) {
      thread_to_activate->activate();
    }
  }
  
  void G1ConcurrentRefineThreadControl::print_on(outputStream* st) const {
--- 102,112 ----
    if (thread_to_activate == NULL) {
      // Still need to create the thread...
      _threads[worker_id] = create_refinement_thread(worker_id, false);
      thread_to_activate = _threads[worker_id];
    }
!   if (thread_to_activate != NULL && !thread_to_activate->is_active()) {
      thread_to_activate->activate();
    }
  }
  
  void G1ConcurrentRefineThreadControl::print_on(outputStream* st) const {
*** 416,426 ****
  uint G1ConcurrentRefine::worker_id_offset() {
    return DirtyCardQueueSet::num_par_ids();
  }
  
  void G1ConcurrentRefine::maybe_activate_more_threads(uint worker_id, size_t num_cur_buffers) {
!   if (activation_threshold(worker_id + 1) > num_cur_buffers) {
      _thread_control.maybe_activate_next(worker_id);
    }
  }
  
  bool G1ConcurrentRefine::do_refinement_step(uint worker_id) {
--- 416,426 ----
  uint G1ConcurrentRefine::worker_id_offset() {
    return DirtyCardQueueSet::num_par_ids();
  }
  
  void G1ConcurrentRefine::maybe_activate_more_threads(uint worker_id, size_t num_cur_buffers) {
!   if (num_cur_buffers > activation_threshold(worker_id + 1)) {
      _thread_control.maybe_activate_next(worker_id);
    }
  }
  
  bool G1ConcurrentRefine::do_refinement_step(uint worker_id) {