/*

 * Copyright (c) 2015, 2016, 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

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 */

/*

 * @test

 * @summary Check to make sure that shared strings in the bootstrap CDS archive

 *          are actually shared

 * 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)

 * @library /testlibrary /test/lib

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

 *          java.management

 * @build SharedStringsWb SharedStrings ClassFileInstaller sun.hotspot.WhiteBox

 * @run main ClassFileInstaller -jar whitebox.jar sun.hotspot.WhiteBox

 * @run main SharedStrings

 */

import jdk.test.lib.*;

public class SharedStrings {

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

        boolean test_runtime = true;

        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(

            "-XX:+UnlockDiagnosticVMOptions",

            "-XX:SharedArchiveFile=./SharedStrings.jsa",

            "-XX:+UseG1GC",

            "-XX:+UseCompressedOops",

            "-XX:+PrintSharedSpaces",

            // Needed for bootclasspath match, for CDS to work with WhiteBox API

            "-Xbootclasspath/a:" + ClassFileInstaller.getJarPath("whitebox.jar"),

            "-Xshare:dump");

        OutputAnalyzer dumpOutput = new OutputAnalyzer(pb.start());

        try {

            dumpOutput.shouldContain("Loading classes to share");

            dumpOutput.shouldContain("Shared string table stats");

            dumpOutput.shouldHaveExitValue(0);

        } catch (RuntimeException e) {

            if (dumpOutput.getOutput().indexOf("Shared strings are excluded") != -1 ||

                dumpOutput.getOutput().indexOf("Cannot dump shared archive") != -1) {

                test_runtime = false;

            } else {

                throw new RuntimeException("Unexpected failure");

            }

        }

        if (test_runtime) {

            pb = ProcessTools.createJavaProcessBuilder(

                "-XX:+UnlockDiagnosticVMOptions",

                "-XX:SharedArchiveFile=./SharedStrings.jsa",

                // these are required modes for shared strings

                "-XX:+UseCompressedOops", "-XX:+UseG1GC",

                // needed for access to white box test API

                "-Xbootclasspath/a:" + ClassFileInstaller.getJarPath("whitebox.jar"),

                "-XX:+UnlockDiagnosticVMOptions", "-XX:+WhiteBoxAPI",

                "-Xshare:on", "-showversion", "SharedStringsWb");

            OutputAnalyzer output = new OutputAnalyzer(pb.start());

            try {

                output.shouldContain("sharing");

                output.shouldHaveExitValue(0);

            } catch (RuntimeException e) {

                output.shouldContain("Unable to use shared archive");

                output.shouldHaveExitValue(1);

            }

        }

    }

}