/*
 * Copyright (c) 2015, 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
 * @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)
 * @requires (vm.gc=="G1" | vm.gc=="null")
 * @library /testlibrary /test/lib
 * @modules java.base/sun.misc
 *          java.management
 * @build SharedStringsWb SharedStrings BasicJarBuilder sun.hotspot.WhiteBox
 * @run main ClassFileInstaller sun.hotspot.WhiteBox
 * @run main SharedStrings
 */
import jdk.test.lib.*;

public class SharedStrings {
    public static void main(String[] args) throws Exception {
        BasicJarBuilder.build("whitebox", "sun/hotspot/WhiteBox");

        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
            "-XX:+UnlockDiagnosticVMOptions",
            "-XX:SharedArchiveFile=./SharedStrings.jsa",
            "-XX:+PrintSharedSpaces",
            // Needed for bootclasspath match, for CDS to work with WhiteBox API
            "-Xbootclasspath/a:" + BasicJarBuilder.getTestJar("whitebox.jar"),
            "-Xshare:dump");

        new OutputAnalyzer(pb.start())
            .shouldContain("Loading classes to share")
            .shouldContain("Shared string table stats")
            .shouldHaveExitValue(0);

        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:" + BasicJarBuilder.getTestJar("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);
        }
    }
}