| /* |
| * Copyright (c) 2013, 2017, 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 |
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| */ |
| |
| /** |
| * @test CdsSameObjectAlignment |
| * @requires vm.cds |
| * @summary Testing CDS (class data sharing) using varying object alignment. |
| * Using same object alignment for each dump/load pair |
| * @requires (vm.opt.UseCompressedOops == null) | (vm.opt.UseCompressedOops == true) |
| * @library /test/lib |
| * @modules java.base/jdk.internal.misc |
| * java.management |
| */ |
| |
| import jdk.test.lib.Platform; |
| import jdk.test.lib.cds.CDSTestUtils; |
| import jdk.test.lib.process.OutputAnalyzer; |
| |
| public class CdsSameObjectAlignment { |
| public static void main(String[] args) throws Exception { |
| String nativeWordSize = System.getProperty("sun.arch.data.model"); |
| if (!Platform.is64bit()) { |
| System.out.println("ObjectAlignmentInBytes for CDS is only " + |
| "supported on 64bit platforms; this plaform is " + |
| nativeWordSize); |
| System.out.println("Skipping the test"); |
| } else { |
| dumpAndLoadSharedArchive(8); |
| dumpAndLoadSharedArchive(16); |
| dumpAndLoadSharedArchive(32); |
| dumpAndLoadSharedArchive(64); |
| } |
| } |
| |
| private static void |
| dumpAndLoadSharedArchive(int objectAlignmentInBytes) throws Exception { |
| String objectAlignmentArg = "-XX:ObjectAlignmentInBytes=" |
| + objectAlignmentInBytes; |
| System.out.println("dumpAndLoadSharedArchive(): objectAlignmentInBytes = " |
| + objectAlignmentInBytes); |
| |
| CDSTestUtils.createArchiveAndCheck(objectAlignmentArg); |
| CDSTestUtils.runWithArchiveAndCheck(objectAlignmentArg); |
| } |
| } |