1 /*
   2  * Copyright (c) 2001, 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_VM_GC_G1_G1SATBCARDTABLEMODREFBS_INLINE_HPP
  26 #define SHARE_VM_GC_G1_G1SATBCARDTABLEMODREFBS_INLINE_HPP
  27 
  28 #include "gc/g1/g1SATBCardTableModRefBS.hpp"
  29 #include "oops/oop.inline.hpp"
  30 
  31 // We export this to make it available in cases where the static
  32 // type of the barrier set is known.  Note that it is non-virtual.
  33 template <class T> void G1SATBCardTableModRefBS::inline_write_ref_field_pre(T* field, oop newVal) {
  34   T heap_oop = oopDesc::load_heap_oop(field);
  35   if (!oopDesc::is_null(heap_oop)) {
  36     enqueue(oopDesc::decode_heap_oop(heap_oop));
  37   }
  38 }
  39 
  40 // These are the more general virtual versions.
  41 void G1SATBCardTableModRefBS::write_ref_field_pre_work(oop* field, oop new_val) {
  42   inline_write_ref_field_pre(field, new_val);
  43 }
  44 void G1SATBCardTableModRefBS::write_ref_field_pre_work(narrowOop* field, oop new_val) {
  45   inline_write_ref_field_pre(field, new_val);
  46 }
  47 
  48 void G1SATBCardTableModRefBS::set_card_claimed(size_t card_index) {
  49   jbyte val = _byte_map[card_index];
  50   if (val == clean_card_val()) {
  51     val = (jbyte)claimed_card_val();
  52   } else {
  53     val |= (jbyte)claimed_card_val();
  54   }
  55   _byte_map[card_index] = val;
  56 }
  57 
  58 #endif // SHARE_VM_GC_G1_G1SATBCARDTABLEMODREFBS_INLINE_HPP