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.ArrayList;

    25 import java.util.List;

    26 

    27 import sun.jvm.hotspot.gc.g1.G1CollectedHeap;

    28 import sun.jvm.hotspot.gc.g1.HeapRegion;

    29 import sun.jvm.hotspot.HotSpotAgent;

    30 import sun.jvm.hotspot.runtime.VM;

    31 

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

    33 import jdk.test.lib.Asserts;

    34 import jdk.test.lib.Platform;

    35 import jdk.test.lib.process.OutputAnalyzer;

    36 import jdk.test.lib.process.ProcessTools;

    37 import jdk.test.lib.Utils;

    38 

    39 /*

    40  * @test

    41  * @library /test/lib

    42  * @requires os.family != "mac"

    43  * @modules jdk.hotspot.agent/sun.jvm.hotspot

    44  *          jdk.hotspot.agent/sun.jvm.hotspot.gc.g1

    45  *          jdk.hotspot.agent/sun.jvm.hotspot.memory

    46  *          jdk.hotspot.agent/sun.jvm.hotspot.runtime

    47  * @run main/othervm TestG1HeapRegion

    48  */

    49 

    50 public class TestG1HeapRegion {

    51 

    52     private static LingeredApp theApp = null;

    53 

    54     private static void checkHeapRegion(String pid) throws Exception {

    55         HotSpotAgent agent = new HotSpotAgent();

    56 

    57         try {

    58             agent.attach(Integer.parseInt(pid));

    59             G1CollectedHeap heap = (G1CollectedHeap)VM.getVM().getUniverse().heap();

    60             HeapRegion hr = heap.hrm().heapRegionIterator().next();

    61             HeapRegion hrTop = heap.hrm().getByAddress(hr.top());

    62 

    63             Asserts.assertEquals(hr.top(), hrTop.top(),

    64                                  "Address of HeapRegion does not match.");

    65         } finally {

    66             agent.detach();

    67         }

    68     }

    69 

    70     private static void createAnotherToAttach(long lingeredAppPid)

    71                                                          throws Exception {

    72         String[] toolArgs = {

    73             "--add-modules=jdk.hotspot.agent",

    74             "--add-exports=jdk.hotspot.agent/sun.jvm.hotspot=ALL-UNNAMED",

    75             "--add-exports=jdk.hotspot.agent/sun.jvm.hotspot.gc.g1=ALL-UNNAMED",

    76             "--add-exports=jdk.hotspot.agent/sun.jvm.hotspot.memory=ALL-UNNAMED",

    77             "--add-exports=jdk.hotspot.agent/sun.jvm.hotspot.runtime=ALL-UNNAMED",

    78             "TestG1HeapRegion",

    79             Long.toString(lingeredAppPid)

    80         };

    81 

    82         // Start a new process to attach to the lingered app

    83         ProcessBuilder processBuilder = ProcessTools.createJavaProcessBuilder(toolArgs);

    84         OutputAnalyzer SAOutput = ProcessTools.executeProcess(processBuilder);

    85         SAOutput.shouldHaveExitValue(0);

    86         System.out.println(SAOutput.getOutput());

    87     }

    88 

    89     public static void main (String... args) throws Exception {

    90         if (!Platform.shouldSAAttach()) {

    91             System.out.println(

    92                "SA attach not expected to work - test skipped.");

    93             return;

    94         }

    95 

    96         if (args == null || args.length == 0) {

    97             try {

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

    99                 vmArgs.add("-XX:+UsePerfData");

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

   101                 vmArgs.addAll(Utils.getVmOptions());

   102 

   103                 theApp = new LingeredApp();

   104                 LingeredApp.startApp(vmArgs, theApp);

   105                 createAnotherToAttach(theApp.getPid());

   106             } finally {

   107                 LingeredApp.stopApp(theApp);

   108             }

   109         } else {

   110             checkHeapRegion(args[0]);

   111         }

   112     }

   113 }