1 /*

     2  * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.

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

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

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

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

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

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

    13  * accompanied this code).

    14  *

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

    16  * 2 along with this work; if not, write to the Free Software Foundation,

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

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 import java.util.HashMap;

    25 import java.util.List;

    26 import java.util.ArrayList;

    27 import java.util.Map;

    28 import jdk.test.lib.apps.LingeredApp;

    29 

    30 /*

    31  * @test

    32  * @bug 8175312

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

    34  * @library /test/lib

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

    36  * @run main/othervm/timeout=2400 ClhsdbRegionDetailsScanOopsForG1

    37  */

    38 

    39 public class ClhsdbRegionDetailsScanOopsForG1 {

    40 

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

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

    43 

    44         LingeredAppWithLargeStringArray theApp = null;

    45         try {

    46             ClhsdbLauncher test = new ClhsdbLauncher();

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

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

    49             vmArgs.add("-Xmx8g");

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

    51 

    52             theApp = new LingeredAppWithLargeStringArray();

    53             LingeredApp.startApp(vmArgs, theApp);

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

    55 

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

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

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

    59 

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

    61             // 'g1regiondetails' command

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

    63                 "Region",

    64                 "Eden",

    65                 "Survivor",

    66                 "StartsHumongous",

    67                 "ContinuesHumongous",

    68                 "Free"));

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

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

    71                                                   expStrMap, unExpStrMap);

    72             if (regionDetailsOutput == null) {

    73                 // Output could be null due to attach permission issues

    74                 // and if we are skipping this.

    75                 LingeredApp.stopApp(theApp);

    76                 return;

    77             }

    78 

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

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

    81             // array of Strings.

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

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

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

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

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

    87             expStrMap = new HashMap<>();

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

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

    90         } catch (Exception ex) {

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

    92         } finally {

    93             LingeredApp.stopApp(theApp);

    94         }

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

    96     }

    97 }