1 /*
   2  * Copyright (c) 2013, 2019, 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.testlibrary.Asserts;
  39 import jdk.testlibrary.jfr.EventNames;
  40 import jdk.testlibrary.jfr.ExecuteOOMApp;
  41 
  42 /*
  43  * @test
  44  * @key jfr
  45  *
  46  * @requires vm.gc == "G1" | vm.gc == null
  47  * @library /lib/testlibrary
  48  * @run main jdk.jfr.event.gc.detailed.TestG1ConcurrentModeFailureEvent
  49  */
  50 
  51 public class TestG1ConcurrentModeFailureEvent {
  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 = "TestG1ConcurrentModeFailureEvent.jfr";
  56     private final static int BYTES_TO_ALLOCATE = 1024 * 512;
  57 
  58     public static void main(String[] args) throws Exception {
  59         String[] vmFlags = {"-Xmx512m", "-Xms512m", "-XX:MaxTenuringThreshold=0",
  60             "-XX:+UseG1GC", "-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("testG1GC.log", "concurrent-mark-abort");
  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 }