| /* |
| * Copyright (c) 2009, 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 6826736 |
| * @summary CMS: core dump with -XX:+UseCompressedOops |
| * |
| * @run main/othervm/timeout=600 -XX:+IgnoreUnrecognizedVMOptions -Xbatch -XX:+ScavengeALot -XX:+UseCompressedOops -XX:HeapBaseMinAddress=32g -XX:CompileThreshold=100 -XX:CompileOnly=Test.test -XX:-BlockLayoutRotateLoops -XX:LoopUnrollLimit=0 -Xmx256m -XX:ParallelGCThreads=4 Test |
| */ |
| |
| public class Test { |
| int[] arr; |
| int[] arr2; |
| int test(int r) { |
| for (int i = 0; i < 100; i++) { |
| for (int j = i; j < 100; j++) { |
| int a = 0; |
| for (long k = 0; k < 100; k++) { |
| a += k; |
| } |
| if (arr != null) |
| a = arr[j]; |
| r += a; |
| } |
| } |
| return r; |
| } |
| |
| public static void main(String[] args) { |
| int r = 0; |
| Test t = new Test(); |
| for (int i = 0; i < 100; i++) { |
| t.arr = new int[100]; |
| r = t.test(r); |
| } |
| System.out.println("Warmup 1 is done."); |
| for (int i = 0; i < 100; i++) { |
| t.arr = null; |
| r = t.test(r); |
| } |
| System.out.println("Warmup 2 is done."); |
| for (int i = 0; i < 100; i++) { |
| t.arr = new int[100]; |
| r = t.test(r); |
| } |
| System.out.println("Warmup is done."); |
| for (int i = 0; i < 100; i++) { |
| t.arr = new int[1000000]; |
| t.arr = null; |
| r = t.test(r); |
| } |
| } |
| } |