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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)

 * @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 {

        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);

        }

    }

}