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1 /*
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2 * Copyright 2009 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 /**
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26 * @test
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27 * @bug 6826736
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28 * @summary CMS: core dump with -XX:+UseCompressedOops
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29 *
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30 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -Xbatch -XX:+ScavengeALot -XX:+UseCompressedOops -XX:HeapBaseMinAddress=32g -XX:CompileThreshold=100 -XX:CompileOnly=Test.test -XX:-BlockLayoutRotateLoops -XX:LoopUnrollLimit=0 Test
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31 */
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32
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33 public class Test {
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34 int[] arr;
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35 int[] arr2;
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36 int test(int r) {
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37 for (int i = 0; i < 100; i++) {
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38 for (int j = i; j < 100; j++) {
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39 int a = 0;
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40 for (long k = 0; k < 100; k++) {
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41 a += k;
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42 }
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43 if (arr != null)
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44 a = arr[j];
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45 r += a;
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46 }
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47 }
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48 return r;
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49 }
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50
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51 public static void main(String[] args) {
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52 int r = 0;
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53 Test t = new Test();
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54 for (int i = 0; i < 100; i++) {
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55 t.arr = new int[100];
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56 r = t.test(r);
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57 }
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58 System.out.println("Warmup 1 is done.");
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59 for (int i = 0; i < 100; i++) {
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60 t.arr = null;
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61 r = t.test(r);
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62 }
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63 System.out.println("Warmup 2 is done.");
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64 for (int i = 0; i < 100; i++) {
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65 t.arr = new int[100];
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66 r = t.test(r);
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67 }
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68 System.out.println("Warmup is done.");
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69 for (int i = 0; i < 100; i++) {
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70 t.arr = new int[1000000];
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71 t.arr = null;
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72 r = t.test(r);
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73 }
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74 }
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75 }
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