src/hotspot/share/gc/parallel/cardTableExtension.hpp

RFE_8195103_reduce_initial_card_marks

 /*
- * Copyright (c) 2001, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2018, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.

@@ -106,10 +106,17
   bool is_valid_card_address(jbyte* addr) {
     return (addr >= _byte_map) && (addr < _byte_map + _byte_map_size);
   }
 
 #endif // ASSERT
+
+  // ReduceInitialCardMarks support
+  virtual bool is_in_young(oop obj) const;
+
+  virtual bool card_mark_must_follow_store() const {
+    return false;
+  }
 };
 
 template<>
 struct BarrierSet::GetName<CardTableExtension> {
   static const BarrierSet::Name value = BarrierSet::CardTableExtension;