| /* |
| * 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 |
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| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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| */ |
| |
| /** |
| * @test CdsDifferentObjectAlignment |
| * @requires vm.cds |
| * @summary Testing CDS (class data sharing) using varying object alignment. |
| * Using different object alignment for each dump/load pair. |
| * This is a negative test; using object alignment for loading that |
| * is different from object alignment for creating a CDS file |
| * should fail when loading. |
| * @requires (vm.opt.UseCompressedOops == null) | (vm.opt.UseCompressedOops == true) |
| * @library /test/lib |
| * @bug 8025642 |
| * @modules java.base/jdk.internal.misc |
| * java.management |
| */ |
| |
| import jdk.test.lib.cds.CDSTestUtils; |
| import jdk.test.lib.process.OutputAnalyzer; |
| import jdk.test.lib.Platform; |
| |
| public class CdsDifferentObjectAlignment { |
| 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 { |
| createAndLoadSharedArchive(16, 64); |
| createAndLoadSharedArchive(64, 32); |
| } |
| } |
| |
| |
| // Parameters are object alignment expressed in bytes |
| private static void |
| createAndLoadSharedArchive(int createAlignment, int loadAlignment) |
| throws Exception { |
| String createAlignmentArgument = "-XX:ObjectAlignmentInBytes=" + |
| createAlignment; |
| String loadAlignmentArgument = "-XX:ObjectAlignmentInBytes=" + |
| loadAlignment; |
| String expectedErrorMsg = |
| String.format( |
| "The shared archive file's ObjectAlignmentInBytes of %d " + |
| "does not equal the current ObjectAlignmentInBytes of %d", |
| createAlignment, |
| loadAlignment); |
| |
| CDSTestUtils.createArchiveAndCheck(createAlignmentArgument); |
| |
| OutputAnalyzer out = CDSTestUtils.runWithArchive(loadAlignmentArgument); |
| CDSTestUtils.checkExecExpectError(out, 1, expectedErrorMsg); |
| } |
| } |