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/**

 * @test

 * @bug 8169703

 * @summary Verifies that dumping and loading a CDS archive succeeds with AlwaysPreTouch

 * @requires vm.gc.G1

 * @key gc regression

 * @requires vm.cds

 * @library /test/lib

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

 *          java.management

 * @run main TestSharedArchiveWithPreTouch

 */

import java.util.List;

import java.util.ArrayList;

import java.util.Arrays;

import jdk.test.lib.Platform;

import jdk.test.lib.process.ProcessTools;

import jdk.test.lib.process.OutputAnalyzer;

public class TestSharedArchiveWithPreTouch {

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

        final String ArchiveFileName = "./SharedArchiveWithPreTouch.jsa";

        final List<String> BaseOptions = Arrays.asList(new String[] {"-XX:+UseG1GC", "-XX:+AlwaysPreTouch",

            "-XX:+UnlockDiagnosticVMOptions", "-XX:SharedArchiveFile=" + ArchiveFileName });

        ProcessBuilder pb;

        List<String> dump_args = new ArrayList<String>(BaseOptions);

        if (Platform.is64bit()) {

          dump_args.addAll(0, Arrays.asList(new String[] { "-XX:+UseCompressedClassPointers", "-XX:+UseCompressedOops" }));

        }

        dump_args.addAll(Arrays.asList(new String[] { "-Xshare:dump" }));

        pb = ProcessTools.createJavaProcessBuilder(dump_args.toArray(new String[0]));

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

        try {

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

            output.shouldHaveExitValue(0);

            List<String> load_args = new ArrayList<String>(BaseOptions);

            if (Platform.is64bit()) {

                load_args.addAll(0, Arrays.asList(new String[] { "-XX:+UseCompressedClassPointers", "-XX:+UseCompressedOops" }));

            }

            load_args.addAll(Arrays.asList(new String[] { "-Xshare:on", "-version" }));

            pb = ProcessTools.createJavaProcessBuilder(load_args.toArray(new String[0]));

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

            output.shouldContain("sharing");

            output.shouldHaveExitValue(0);

        } catch (RuntimeException e) {

            // Report 'passed' if CDS was turned off.

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

            output.shouldHaveExitValue(1);

        }

    }

}