1 /* 2 * Copyright (c) 2013, 2018, 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 * @test CdsSameObjectAlignment 26 * @summary Testing CDS (class data sharing) using varying object alignment. 27 * Using same object alignment for each dump/load pair 28 * @requires vm.cds 29 * @requires vm.bits == 64 30 * @library /test/lib 31 * @modules java.base/jdk.internal.misc 32 * java.management 33 * @run main CdsSameObjectAlignment 34 */ 35 36 import jdk.test.lib.Platform; 37 import jdk.test.lib.cds.CDSTestUtils; 38 import jdk.test.lib.process.OutputAnalyzer; 39 40 public class CdsSameObjectAlignment { 41 public static void main(String[] args) throws Exception { 42 dumpAndLoadSharedArchive(8); 43 dumpAndLoadSharedArchive(16); 44 dumpAndLoadSharedArchive(32); 45 dumpAndLoadSharedArchive(64); 46 } 47 48 private static void 49 dumpAndLoadSharedArchive(int objectAlignmentInBytes) throws Exception { 50 String objectAlignmentArg = "-XX:ObjectAlignmentInBytes=" 51 + objectAlignmentInBytes; 52 System.out.println("dumpAndLoadSharedArchive(): objectAlignmentInBytes = " 53 + objectAlignmentInBytes); 54 55 CDSTestUtils.createArchiveAndCheck(objectAlignmentArg); 56 CDSTestUtils.runWithArchiveAndCheck(objectAlignmentArg); 57 } 58 }