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/*

 * @test

 * @summary Test how CDS dumping handles the existence of humongous G1 regions.

 * @library /test/lib /test/hotspot/jtreg/runtime/cds/appcds /test/hotspot/jtreg/runtime/cds/appcds/test-classes

 * @requires vm.cds.archived.java.heap

 * @requires vm.flavor != "minimal"

 */

import jdk.test.lib.cds.CDSOptions;

import jdk.test.lib.process.OutputAnalyzer;

import jdk.test.lib.process.ProcessTools;

public class HumongousDuringDump {

    public static String appClasses[] = {

    };

    public static String agentClasses[] = {

    };

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

        String agentJar =

            ClassFileInstaller.writeJar("HumongousDuringDumpTransformer.jar",

                                        ClassFileInstaller.Manifest.fromSourceFile("HumongousDuringDumpTransformer.mf"),

                                        agentClasses);

        String appJar =

            ClassFileInstaller.writeJar("HumongousDuringDumpApp.jar", appClasses);

        String gcLog = Boolean.getBoolean("test.cds.verbose.gc") ?

            "-Xlog:gc*=info,gc+region=trace,gc+alloc+region=debug" : "-showversion";

        String extraArg = "-javaagent:" + agentJar;

        String extraOption = "-XX:+AllowArchivingWithJavaAgent";

        OutputAnalyzer out =

                              "-XX:+UnlockDiagnosticVMOptions", extraOption,

                              "-Xlog:gc+region+cds",

                              "-Xlog:gc+region=trace",

                              extraArg, "-Xmx64m", gcLog);

        out.shouldContain("(Unmovable) humongous regions have been found and may lead to fragmentation");

        out.shouldContain("All free regions should be at the top end of the heap, but we found holes.");

        out.shouldMatch("gc,region,cds. HeapRegion .* HUM. hole");

        String pattern = "gc,region,cds. HeapRegion .*hole";

        out.shouldMatch(pattern);

        out.shouldNotMatch(pattern + ".*unexpected");

        TestCommon.run(

                "-cp", appJar,

                "-verbose",

                "-Xmx64m",

                "-XX:+PrintSharedSpaces",

                "-XX:+UnlockDiagnosticVMOptions", extraOption,

                gcLog,

              .assertNormalExit();

    }

}