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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

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 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

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import java.util.HashMap;

import java.util.List;

import java.util.ArrayList;

import java.util.Map;

import jdk.test.lib.apps.LingeredApp;

/*

 * @test

 * @bug 8175312

 * @summary Test clhsdb 'g1regiondetails' and 'scanoops' commands for G1GC

 * @library /test/lib

 * @requires (vm.bits == "64" & os.maxMemory > 8g)

 * @run main/othervm/timeout=2400 ClhsdbRegionDetailsScanOopsForG1

 */

public class ClhsdbRegionDetailsScanOopsForG1 {

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

        System.out.println("Starting ClhsdbRegionDetailsScanOopsForG1 test");

        LingeredAppWithLargeStringArray theApp = null;

        try {

            ClhsdbLauncher test = new ClhsdbLauncher();

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

            vmArgs.add("-XX:+UseG1GC");

            vmArgs.add("-Xmx8g");

            vmArgs.add("-XX:G1HeapRegionSize=2m");

            theApp = new LingeredAppWithLargeStringArray();

            LingeredApp.startApp(vmArgs, theApp);

            System.out.println("Started LingeredAppWithLargeStringArray with pid " + theApp.getPid());

            List<String> cmds = List.of("g1regiondetails");

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

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

            // Test that the various types of regions are listed with the

            // 'g1regiondetails' command

            expStrMap.put("g1regiondetails", List.of(

                "Region",

                "Eden",

                "Survivor",

                "StartsHumongous",

                "ContinuesHumongous",

                "Free"));

            unExpStrMap.put("g1regiondetails", List.of("Unknown Region Type"));

            String regionDetailsOutput = test.run(theApp.getPid(), cmds,

                                                  expStrMap, unExpStrMap);

            if (regionDetailsOutput == null) {

                // Output could be null due to attach permission issues

                // and if we are skipping this.

                LingeredApp.stopApp(theApp);

                return;

            }

            // Test the output of 'scanoops' -- get the start and end addresses

            // from the StartsHumongous region. Ensure that it contains an

            // array of Strings.

            String[] snippets = regionDetailsOutput.split(":StartsHumongous");

            snippets = snippets[0].split("Region: ");

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

            // words[0] and words[1] represent the start and end addresses

            String cmd = "scanoops " + words[0] + " " + words[1];

            expStrMap = new HashMap<>();

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

            test.run(theApp.getPid(), List.of(cmd), expStrMap, null);

        } catch (Exception ex) {

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

        } finally {

            LingeredApp.stopApp(theApp);

        }

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

    }

}