1 /*
   2  * Copyright (c) 2015, 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.jcmd;
  27 
  28 import java.util.List;
  29 
  30 import jdk.jfr.FlightRecorder;
  31 import jdk.jfr.Recording;
  32 import jdk.testlibrary.jfr.EventNames;
  33 import jdk.testlibrary.jfr.JcmdAsserts;
  34 import jdk.testlibrary.jfr.JcmdHelper;
  35 
  36 
  37 /*
  38  * @test
  39  * @summary Start a recording with or without path-to-gc-roots
  40  * @library /lib/testlibrary
  41  * @key jfr
  42  *
  43  * @run main/othervm jdk.jfr.jcmd.TestJcmdStartPathToGCRoots
  44  */
  45 public class TestJcmdStartPathToGCRoots {
  46 
  47     public static void main(String[] args) throws Exception {
  48 
  49         JcmdHelper.jcmd("JFR.start", "path-to-gc-roots=true");
  50         assertCutoff("infinity", "Expected cutoff to be '0 ns' wuth -XX:StartFlightRecording=path-to-gc-roots=true");
  51         closeRecording();
  52 
  53         JcmdHelper.jcmd("JFR.start", "path-to-gc-roots=false");
  54         assertCutoff("0 ns", "Expected cutoff to be '0 ns' with -XX:StartFlightRecording=path-to-gc-roots=false");
  55         closeRecording();
  56 
  57         JcmdHelper.jcmd("JFR.start");
  58         assertCutoff("0 ns", "Expected cutoff to be '0 ns' with -XX:StartFlightRecording=");
  59         closeRecording();
  60     }
  61 
  62     private static void assertCutoff(String expected, String errorMessage) throws Exception {
  63         List<Recording> recordings = FlightRecorder.getFlightRecorder().getRecordings();
  64         if (recordings.isEmpty()) {
  65             throw new Exception("Expected recording to be started");
  66         }
  67         if (recordings.size() != 1) {
  68             throw new Exception("Expected only one recording");
  69         }
  70 
  71         String settingName = EventNames.OldObjectSample + "#" + "cutoff";
  72         Recording r = recordings.get(0);
  73         String cutoff = r.getSettings().get(settingName);
  74         System.out.println(settingName + "=" + cutoff);
  75         if (!expected.equals(cutoff)) {
  76             throw new Exception(errorMessage);
  77         }
  78         r.close();
  79     }
  80 
  81     private static void closeRecording() {
  82         for (Recording r : FlightRecorder.getFlightRecorder().getRecordings()) {
  83             r.close();
  84         }
  85     }
  86 
  87 }