/*

 * 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

 * questions.

 */

 * @test CdsDifferentObjectAlignment

 * @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);

    }

}