/*

 * Copyright (c) 2016, 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.

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 * @test SharedStringsDedup

 * @summary Test -Xshare:auto with shared strings and -XX:+UseStringDeduplication

 * Feature support: G1GC only, compressed oops/kptrs, 64-bit os, not on windows

 * @requires (sun.arch.data.model != "32") & (os.family != "windows")

 * @requires (vm.opt.UseCompressedOops == null) | (vm.opt.UseCompressedOops == true)

 * @requires vm.gc.G1

 * @library /test/lib

 * @modules java.base/jdk.internal.misc

 *          java.management

 * @run main SharedStringsDedup

 */

import jdk.test.lib.cds.CDSTestUtils;

import jdk.test.lib.process.OutputAnalyzer;

import java.io.File;

// The main purpose is to test the interaction between shared strings

// and -XX:+UseStringDeduplication. We run in -Xshare:auto mode so

// we don't need to worry about CDS archive mapping failure (which

// doesn't happen often so it won't impact coverage).

public class SharedStringsDedup {

    public static void main(String[] args) throws Exception {

        OutputAnalyzer out =

            CDSTestUtils.createArchive("-XX:+UseCompressedOops", "-XX:+UseG1GC");

        CDSTestUtils.checkDump(out, "Shared string table stats");

        CDSTestUtils.runWithArchiveAndCheck("-XX:+UseCompressedOops", "-XX:+UseG1GC",

                                            "-XX:+UseStringDeduplication");

    }

}