1 /*

     2  * Copyright (c) 2013, 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.gc.detailed;

    27 

    28 import java.io.IOException;

    29 import java.io.File;

    30 import java.nio.charset.Charset;

    31 import java.nio.file.Files;

    32 import java.nio.file.Path;

    33 import java.nio.file.Paths;

    34 import java.util.Optional;

    35 

    36 import jdk.jfr.consumer.RecordedEvent;

    37 import jdk.jfr.consumer.RecordingFile;

    38 import jdk.test.lib.Asserts;

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

    40 

    41 /**

    42  * @test

    43  * @key jfr

    44  * @requires vm.hasJFR

    45  *

    46  * @requires (vm.gc == "ConcMarkSweep" | vm.gc == null) & !vm.graal.enabled

    47  * @library /test/lib /test/jdk

    48  *

    49  * @run main jdk.jfr.event.gc.detailed.TestCMSConcurrentModeFailureEvent

    50  */

    51 public class TestCMSConcurrentModeFailureEvent {

    52 

    53     private final static String EVENT_NAME = EventNames.ConcurrentModeFailure;

    54     private final static String EVENT_SETTINGS_FILE = System.getProperty("test.src", ".") + File.separator + "concurrentmodefailure-testsettings.jfc";

    55     private final static String JFR_FILE = "TestCMSConcurrentModeFailureEvent.jfr";

    56     private final static int BYTES_TO_ALLOCATE = 1024 * 512;

    57 

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

    59         String[] vmFlags = {"-Xmx128m", "-XX:MaxTenuringThreshold=0", "-Xlog:gc*=debug:testCMSGC.log",

    60             "-XX:+UseConcMarkSweepGC", "-XX:+UnlockExperimentalVMOptions", "-XX:-UseFastUnorderedTimeStamps"};

    61 

    62         if (!ExecuteOOMApp.execute(EVENT_SETTINGS_FILE, JFR_FILE, vmFlags, BYTES_TO_ALLOCATE)) {

    63             System.out.println("OOM happened in the other thread(not test thread). Skip test.");

    64             // Skip test, process terminates due to the OOME error in the different thread

    65             return;

    66         }

    67 

    68         Optional<RecordedEvent> event = RecordingFile.readAllEvents(Paths.get(JFR_FILE)).stream().findFirst();

    69         if (event.isPresent()) {

    70             Asserts.assertEquals(EVENT_NAME, event.get().getEventType().getName(), "Wrong event type");

    71         } else {

    72             // No event received. Check if test did trigger the event.

    73             boolean isEventTriggered = fileContainsString("testCMSGC.log", "concurrent mode failure");

    74             System.out.println("isEventTriggered=" +isEventTriggered);

    75             Asserts.assertFalse(isEventTriggered, "Event found in log, but not in JFR");

    76         }

    77     }

    78 

    79     private static boolean fileContainsString(String filename, String text) throws IOException {

    80         Path p = Paths.get(filename);

    81         for (String line : Files.readAllLines(p, Charset.defaultCharset())) {

    82             if (line.contains(text)) {

    83                 return true;

    84             }

    85         }

    86         return false;

    87     }

    88 }