src/hotspot/share/gc/g1/g1Policy.cpp

rev 55404 : 8226197: Reducing G1?s CPU cost with simplified write post-barrier and disabling concurrent refinement
Summary: A prototype to add a mode for G1 to use a simplified write post-barrier. Guarded by new flag G1FastWriteBarrier.

@@ -488,11 +488,13 @@
          "Maximum survivor regions %u plus used regions %u exceeds max regions %u",
          max_survivor_regions(), _g1h->num_used_regions(), _g1h->max_regions());
   assert_used_and_recalculate_used_equal(_g1h);
 
   phase_times()->record_cur_collection_start_sec(start_time_sec);
-  _pending_cards = _g1h->pending_card_num();
+  size_t pending_cards = _g1h->pending_card_num();
+  assert(!G1FastWriteBarrier || pending_cards == 0, "non-zero pending cards");
+  _pending_cards = pending_cards;
 
   _collection_set->reset_bytes_used_before();
   _bytes_copied_during_gc = 0;
 
   // do that for any other surv rate groups