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 * 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
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 *
 * 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).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
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/**
 * @test SharedStringsDedup
 * @requires vm.cds
 * @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");
    }
}