1 /*

     2  * Copyright (c) 2017, 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.sampling;

    27 

    28 import java.io.File;

    29 import java.nio.file.Paths;

    30 import java.time.Duration;

    31 

    32 import jdk.jfr.FlightRecorder;

    33 import jdk.jfr.Recording;

    34 import jdk.jfr.consumer.RecordedEvent;

    35 import jdk.jfr.consumer.RecordingFile;

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

    37 import jdk.test.lib.process.OutputAnalyzer;

    38 import jdk.test.lib.process.ProcessTools;

    39 

    40 /*

    41  * @test

    42  * @key jfr

    43  * @library /test/lib

    44  * @modules java.base/jdk.internal.misc

    45  * @run main/native jdk.jfr.event.sampling.TestNative

    46  */

    47 public class TestNative {

    48 

    49     public final static String EVENT_SETTINGS_FILE = System.getProperty("test.src", ".") + File.separator + "sampling.jfc";

    50     public final static String JFR_DUMP = "samples.jfr";

    51     public final static String EXCEPTION = "No native samples found";

    52     public final static String NATIVE_EVENT = EventNames.NativeMethodSample;

    53     public static Recording recording;

    54 

    55     public static native void longTime();

    56 

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

    58         String lib = System.getProperty("test.nativepath");

    59         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(true, "-Djava.library.path=" + lib, "jdk.jfr.event.sampling.TestNative$Test");

    60 

    61         OutputAnalyzer output = ProcessTools.executeProcess(pb);

    62         output.shouldHaveExitValue(0);

    63         output.stdoutShouldNotContain("No native samples found");

    64     }

    65 

    66     static class Test {

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

    68             System.loadLibrary("TestNative");

    69             FlightRecorder.getFlightRecorder();

    70             recording = new Recording();

    71             recording.setToDisk(true);

    72             recording.setDestination(Paths.get(JFR_DUMP));

    73             recording.enable(NATIVE_EVENT).withPeriod(Duration.ofMillis(10));

    74             recording.start();

    75 

    76             longTime();

    77 

    78             recording.stop();

    79             recording.close();

    80 

    81             try (RecordingFile rf = new RecordingFile(Paths.get(JFR_DUMP))) {

    82                 while (rf.hasMoreEvents()) {

    83                     RecordedEvent re = rf.readEvent();

    84                     if (re.getEventType().getName().equals(NATIVE_EVENT)) {

    85                         return;

    86                     }

    87                 }

    88             }

    89 

    90             throw new Exception("No native samples found");

    91         }

    92     }

    93 }