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
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1 /*
2 * Copyright (c) 1997, 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 #include "precompiled.hpp"
26 #include "gc/shared/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
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