| /* |
| * Copyright (c) 2013, 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. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 8007722 |
| * @summary GetAndSetP's MachNode should capture bottom type |
| * @run main/othervm -XX:-UseOnStackReplacement -XX:-BackgroundCompilation Test8007722 |
| * |
| */ |
| |
| import java.util.concurrent.atomic.*; |
| |
| public class Test8007722 { |
| |
| int i; |
| static AtomicReference<Test8007722> ref; |
| |
| static int test(Test8007722 new_obj) { |
| Test8007722 o = ref.getAndSet(new_obj); |
| int ret = o.i; |
| o.i = 5; |
| return ret; |
| } |
| |
| static public void main(String[] args) { |
| Test8007722 obj = new Test8007722(); |
| ref = new AtomicReference<Test8007722>(obj); |
| |
| for (int i = 0; i < 20000; i++) { |
| test(obj); |
| } |
| |
| System.out.println("PASSED"); |
| } |
| } |