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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"
 * @build HumongousDuringDumpTransformer Hello
 * @run main/othervm/timeout=240 HumongousDuringDump
 */

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[] = {
        "Hello",
    };
    public static String agentClasses[] = {
        "HumongousDuringDumpTransformer",
    };

    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 =
          TestCommon.testDump(appJar, TestCommon.list("Hello"),
                              "-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,
                "Hello")
              .assertNormalExit();
    }
}