1 /*
   2  * Copyright (c) 1997, 2014, 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 #include "precompiled.hpp"
  26 #include "memory/specialized_oop_closures.hpp"
  27 #include "oops/objArrayKlass.hpp"
  28 #include "oops/objArrayOop.hpp"
  29 #include "oops/oop.inline.hpp"
  30 
  31 oop objArrayOopDesc::atomic_compare_exchange_oop(int index, oop exchange_value,
  32                                                  oop compare_value) {
  33   volatile HeapWord* dest;
  34   if (UseCompressedOops) {
  35     dest = (HeapWord*)obj_at_addr<narrowOop>(index);
  36   } else {
  37     dest = (HeapWord*)obj_at_addr<oop>(index);
  38   }
  39   oop res = oopDesc::atomic_compare_exchange_oop(exchange_value, dest, compare_value, true);
  40   // update card mark if success
  41   if (res == compare_value) {
  42     update_barrier_set((void*)dest, exchange_value);
  43   }
  44   return res;
  45 }
  46 
  47 #define ObjArrayOop_OOP_ITERATE_DEFN(OopClosureType, nv_suffix)                    \
  48                                                                                    \
  49 int objArrayOopDesc::oop_iterate_range(OopClosureType* blk, int start, int end) {  \
  50   return ((ObjArrayKlass*)klass())->oop_oop_iterate_range##nv_suffix(this, blk, start, end); \
  51 }
  52 
  53 ALL_OOP_OOP_ITERATE_CLOSURES_1(ObjArrayOop_OOP_ITERATE_DEFN)
  54 ALL_OOP_OOP_ITERATE_CLOSURES_2(ObjArrayOop_OOP_ITERATE_DEFN)