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import java.util.HashMap;

import java.util.List;

import java.util.Map;

import java.util.ArrayList;

import jdk.test.lib.Utils;

import jdk.test.lib.apps.LingeredApp;

 * @test

 * @bug 8192985

 * @summary Test the clhsdb 'scanoops' command

 * @library /test/lib

 * @run main/othervm/timeout=1200 ClhsdbScanOops

 */

public class ClhsdbScanOops {

    private static void testWithGcType(String gc) throws Exception {

        LingeredApp theApp = null;

        try {

            ClhsdbLauncher test = new ClhsdbLauncher();

            List<String> vmArgs = new ArrayList<String>();

            vmArgs.add(gc);

            theApp = LingeredApp.startApp(vmArgs);

            System.out.println ("Started LingeredApp with the GC option " + gc +

                                " and pid " + theApp.getPid());

            // Run the 'universe' command to get the address ranges

            List<String> cmds = List.of("universe");

            String universeOutput = test.run(theApp.getPid(), cmds, null, null);

            if (universeOutput == null) {

                // Output could be null due to attach permission issues

                // and if we are skipping this.

                LingeredApp.stopApp(theApp);

                return;

            }

            cmds = new ArrayList<String>();

            Map<String, List<String>> expStrMap = new HashMap<>();

            Map<String, List<String>> unExpStrMap = new HashMap<>();

            String startAddress = null;

            String endAddress = null;

            String[] snippets = null;

            if (gc.contains("UseParallelGC")) {

                snippets = universeOutput.split("eden =  ");

            } else {

                snippets = universeOutput.split("eden \\[");

            }

            String[] words = snippets[1].split(",");

            // Get the addresses from Eden

            startAddress = words[0].replace("[", "");

            endAddress = words[1];

            String cmd = "scanoops " + startAddress + " " + endAddress;

            cmds.add(cmd);

            expStrMap.put(cmd, List.of

                ("java/lang/Object", "java/lang/Class", "java/lang/Thread",

                 "java/lang/String", "[B", "[I"));

            // Test the 'type' option also

            // scanoops <start addr> <end addr> java/lang/String

            // Ensure that only the java/lang/String oops are printed.

            cmd = cmd + " java/lang/String";

            cmds.add(cmd);

            expStrMap.put(cmd, List.of("java/lang/String"));

            unExpStrMap.put(cmd, List.of("java/lang/Thread"));

            test.run(theApp.getPid(), cmds, expStrMap, unExpStrMap);

        } catch (Exception ex) {

            throw new RuntimeException("Test ERROR " + ex, ex);

        } finally {

            LingeredApp.stopApp(theApp);

        }

    }

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

        System.out.println("Starting the ClhsdbScanOops test");

        try {

            testWithGcType("-XX:+UseParallelGC");

            testWithGcType("-XX:+UseSerialGC");

        } catch (Exception e) {

            throw new Error("Test failed with " + e);

        }

        System.out.println("Test PASSED");

    }

}