--- a/hotspot/src/share/vm/oops/objArrayOop.cpp	Wed Jun 18 14:21:28 2014 -0700
+++ b/hotspot/src/share/vm/oops/objArrayOop.cpp	Thu Jun 19 11:16:10 2014 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2014, 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
@@ -27,6 +27,22 @@
 #include "oops/objArrayOop.hpp"
 #include "oops/oop.inline.hpp"
 
+oop objArrayOopDesc::atomic_compare_exchange_oop(int index, oop exchange_value,
+                                                 oop compare_value) {
+  volatile HeapWord* dest;
+  if (UseCompressedOops) {
+    dest = (HeapWord*)obj_at_addr<narrowOop>(index);
+  } else {
+    dest = (HeapWord*)obj_at_addr<oop>(index);
+  }
+  oop res = oopDesc::atomic_compare_exchange_oop(exchange_value, dest, compare_value, true);
+  // update card mark if success
+  if (res == compare_value) {
+    update_barrier_set((void*)dest, exchange_value);
+  }
+  return res;
+}
+
 #define ObjArrayOop_OOP_ITERATE_DEFN(OopClosureType, nv_suffix)                    \
                                                                                    \
 int objArrayOopDesc::oop_iterate_range(OopClosureType* blk, int start, int end) {  \