1 /*

     2  * Copyright (c) 2015, 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.jcmd;

    27 

    28 import java.util.List;

    29 

    30 import jdk.jfr.FlightRecorder;

    31 import jdk.jfr.Recording;

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

    33 

    34 

    35 /*

    36  * @test

    37  * @summary Start a recording with or without path-to-gc-roots

    38  * @library /test/lib /test/jdk

    39  * @key jfr

    40  *

    41  * @run main/othervm jdk.jfr.jcmd.TestJcmdStartPathToGCRoots

    42  */

    43 public class TestJcmdStartPathToGCRoots {

    44 

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

    46 

    47         JcmdHelper.jcmd("JFR.start", "path-to-gc-roots=true");

    48         assertCutoff("infinity", "Expected cutoff to be '0 ns' wuth -XX:StartFlightRecording=path-to-gc-roots=true");

    49         closeRecording();

    50 

    51         JcmdHelper.jcmd("JFR.start", "path-to-gc-roots=false");

    52         assertCutoff("0 ns", "Expected cutoff to be '0 ns' with -XX:StartFlightRecording=path-to-gc-roots=false");

    53         closeRecording();

    54 

    55         JcmdHelper.jcmd("JFR.start");

    56         assertCutoff("0 ns", "Expected cutoff to be '0 ns' with -XX:StartFlightRecording=");

    57         closeRecording();

    58     }

    59 

    60     private static void assertCutoff(String expected, String errorMessage) throws Exception {

    61         List<Recording> recordings = FlightRecorder.getFlightRecorder().getRecordings();

    62         if (recordings.isEmpty()) {

    63             throw new Exception("Expected recording to be started");

    64         }

    65         if (recordings.size() != 1) {

    66             throw new Exception("Expected only one recording");

    67         }

    68 

    69         String settingName = EventNames.OldObjectSample + "#" + "cutoff";

    70         Recording r = recordings.get(0);

    71         String cutoff = r.getSettings().get(settingName);

    72         System.out.println(settingName + "=" + cutoff);

    73         if (!expected.equals(cutoff)) {

    74             throw new Exception(errorMessage);

    75         }

    76         r.close();

    77     }

    78 

    79     private static void closeRecording() {

    80         for (Recording r : FlightRecorder.getFlightRecorder().getRecordings()) {

    81             r.close();

    82         }

    83     }

    84 

    85 }