1917   // Note that _mmu_tracker->max_gc_time() returns the time in seconds.

  1918   double update_rs_time_goal_ms = _mmu_tracker->max_gc_time() * MILLIUNITS * G1RSUpdatePauseFractionPercent / 100.0;

  1919   adjust_concurrent_refinement(update_rs_time, update_rs_processed_buffers, update_rs_time_goal_ms);

  1920 

  1927 

  1928 void G1CollectorPolicy::adjust_concurrent_refinement(double update_rs_time,

  1929                                                      double update_rs_processed_buffers,

  1930                                                      double goal_ms) {

  1931   DirtyCardQueueSet& dcqs = JavaThread::dirty_card_queue_set();

  1932   ConcurrentG1Refine *cg1r = G1CollectedHeap::heap()->concurrent_g1_refine();

  1933 

  1934   if (G1AdaptiveConcRefine) {

  1935     const int k_gy = 3, k_gr = 6;

  1936     const double inc_k = 1.1, dec_k = 0.9;

  1937 

  1938     int g = cg1r->green_zone();

  1939     if (update_rs_time > goal_ms) {

  1940       g = (int)(g * dec_k);  // Can become 0, that's OK. That would mean a mutator-only processing.

  1941     } else {

  1942       if (update_rs_time < goal_ms && update_rs_processed_buffers > g) {

  1943         g = (int)MAX2(g * inc_k, g + 1.0);

  1944       }

  1945     }

  1946     // Change the refinement threads params

  1947     cg1r->set_green_zone(g);

  1948     cg1r->set_yellow_zone(g * k_gy);

  1949     cg1r->set_red_zone(g * k_gr);

  1950     cg1r->reinitialize_threads();

  1951 

  1952     int processing_threshold_delta = MAX2((int)(cg1r->green_zone() * sigma()), 1);

  1953     int processing_threshold = MIN2(cg1r->green_zone() + processing_threshold_delta,

  1954                                     cg1r->yellow_zone());

  1955     // Change the barrier params

  1956     dcqs.set_process_completed_threshold(processing_threshold);

  1957     dcqs.set_max_completed_queue(cg1r->red_zone());

  1958   }

  1959 

  1960   int curr_queue_size = dcqs.completed_buffers_num();

  1961   if (curr_queue_size >= cg1r->yellow_zone()) {

  1962     dcqs.set_completed_queue_padding(curr_queue_size);

  1963   } else {

  1964     dcqs.set_completed_queue_padding(0);

  1965   }

  1966   dcqs.notify_if_necessary();

  1967 }