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.collection;
  27 
  28 import java.time.Duration;
  29 import java.util.List;
  30 
  31 import jdk.jfr.Recording;
  32 import jdk.jfr.consumer.RecordedEvent;
  33 import jdk.testlibrary.jfr.Events;
  34 import jdk.testlibrary.jfr.GCHelper;
  35 
  36 /*
  37  * @test
  38  * @key jfr
  39   * @requires vm.gc == "Parallel" | vm.gc == null
  40  * @library /lib/testlibrary
  41  * @run main/othervm -XX:+UseParallelGC -XX:+UseParallelOldGC jdk.jfr.event.gc.collection.TestGCWithFasttime
  42  */
  43 public class TestGCWithFasttime {
  44     private static final String EVENT_NAME = GCHelper.event_garbage_collection;
  45 
  46     // TODO: Check if all GC tests can be run with fast time. If so, this test is probably not needed.
  47     public static void main(String[] args) throws Exception {
  48         Recording recording = new Recording();
  49         recording.enable(EVENT_NAME).withThreshold(Duration.ofMillis(0));
  50         recording.start();
  51         System.gc();
  52         System.gc();
  53         recording.stop();
  54 
  55         List<RecordedEvent> events = Events.fromRecording(recording);
  56         Events.hasEvents(events);
  57         for (RecordedEvent event : events) {
  58             if (!EVENT_NAME.equals(event.getEventType().getName())) {
  59                 continue;
  60             }
  61             Events.assertField(event, "name").notEmpty();
  62             Events.assertField(event, "cause").notEmpty();
  63         }
  64     }
  65 }