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.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

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

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

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

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

    15  * accompanied this code).

    16  *

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

    18  * 2 along with this work; if not, write to the Free Software Foundation,

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

    20  *

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

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

    23  * questions.

    24  */

    25 

    26 package jdk.jfr.event.oldobject;

    27 

    28 import java.util.ArrayList;

    29 import java.util.List;

    30 

    31 import jdk.jfr.Recording;

    32 import jdk.jfr.consumer.RecordedEvent;

    33 import jdk.jfr.internal.test.WhiteBox;

    34 import jdk.test.lib.jfr.EventNames;

    35 import jdk.test.lib.jfr.Events;

    36 

    37 /**

    38  * @test

    39  * @key jfr

    40  * @requires vm.hasJFR

    41  * @requires vm.gc == "null" & !vm.graal.enabled

    42  * @summary Test leak profiler with CMS GC

    43  * @library /test/lib /test/jdk

    44  * @modules jdk.jfr/jdk.jfr.internal.test

    45  * @run main/othervm  -XX:TLABSize=2k -XX:+UseConcMarkSweepGC jdk.jfr.event.oldobject.TestCMS

    46  */

    47 public class TestCMS {

    48 

    49     static private class FindMe {

    50     }

    51 

    52     public static List<FindMe[]> list = new ArrayList<>(OldObjects.MIN_SIZE);

    53 

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

    55         WhiteBox.setWriteAllObjectSamples(true);

    56 

    57         try (Recording r = new Recording()) {

    58             r.enable(EventNames.OldObjectSample).withStackTrace().with("cutoff", "infinity");

    59             r.start();

    60             allocateFindMe();

    61             System.gc();

    62             r.stop();

    63             List<RecordedEvent> events = Events.fromRecording(r);

    64             System.out.println(events);

    65             if (OldObjects.countMatchingEvents(events, FindMe[].class, null, null, -1, "allocateFindMe") == 0) {

    66                 throw new Exception("Could not find leak with " + FindMe[].class);

    67             }

    68         }

    69     }

    70 

    71     public static void allocateFindMe() {

    72         for (int i = 0; i < OldObjects.MIN_SIZE; i++) {

    73             // Allocate array to trigger sampling code path for interpreter / c1

    74             list.add(new FindMe[0]);

    75         }

    76     }

    77 

    78 }