1 /*

     2  * Copyright (c) 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.api.consumer;

    27 

    28 import static jdk.test.lib.Asserts.assertEquals;

    29 import static jdk.test.lib.Asserts.assertNotNull;

    30 import static jdk.test.lib.Asserts.assertNull;

    31 import static jdk.test.lib.Asserts.assertTrue;

    32 

    33 import java.util.List;

    34 import java.util.function.Consumer;

    35 

    36 import jdk.jfr.Recording;

    37 import jdk.jfr.consumer.RecordedEvent;

    38 import jdk.jfr.consumer.RecordedFrame;

    39 import jdk.jfr.consumer.RecordedMethod;

    40 import jdk.jfr.consumer.RecordedStackTrace;

    41 import jdk.test.lib.Asserts;

    42 import jdk.test.lib.jfr.Events;

    43 import jdk.test.lib.jfr.SimpleEvent;

    44 

    45 /*

    46  * @test

    47  * @summary Verifies that a recorded JFR event has the correct stack trace info

    48  * @key jfr

    49  * @library /test/lib

    50  * @run main/othervm jdk.jfr.api.consumer.TestGetStackTrace

    51  */

    52 public class TestGetStackTrace {

    53 

    54     public static void main(String[] args) throws Throwable {

    55         testStackTrace(r -> r.enable(SimpleEvent.class), TestGetStackTrace::assertNoStackTrace);

    56         testStackTrace(r -> r.enable(SimpleEvent.class).withoutStackTrace(), TestGetStackTrace::assertStackTrace);

    57     }

    58 

    59     private static void testStackTrace(Consumer<Recording> recordingConfigurer, Consumer<RecordedEvent> asserter) throws Throwable {

    60         Recording r = new Recording();

    61         recordingConfigurer.accept(r);

    62         r.start();

    63         SimpleEvent event = new SimpleEvent();

    64         event.commit();

    65         r.stop();

    66         List<RecordedEvent> events = Events.fromRecording(r);

    67         r.close();

    68         Events.hasEvents(events);

    69     }

    70 

    71     private static void assertNoStackTrace(RecordedEvent re) {

    72         assertNull(re.getStackTrace());

    73     }

    74 

    75     private static void assertStackTrace(RecordedEvent re) {

    76         assertNotNull(re.getStackTrace());

    77         RecordedStackTrace strace = re.getStackTrace();

    78         assertEquals(strace.isTruncated(), false);

    79         List<RecordedFrame> frames = strace.getFrames();

    80         assertTrue(frames.size() > 0);

    81         for (RecordedFrame frame : frames) {

    82             assertFrame(frame);

    83         }

    84     }

    85 

    86     private static void assertFrame(RecordedFrame frame) {

    87         int bci = frame.getBytecodeIndex();

    88         int line = frame.getLineNumber();

    89         boolean javaFrame = frame.isJavaFrame();

    90         RecordedMethod method = frame.getMethod();

    91         String type = frame.getType();

    92         System.out.println("*** Frame Info ***");

    93         System.out.println("bci=" + bci);

    94         System.out.println("line=" + line);

    95         System.out.println("type=" + type);

    96         System.out.println("method=" + method);

    97         System.out.println("***");

    98         Asserts.assertTrue(javaFrame, "Only Java frame are currently supported");

    99         Asserts.assertGreaterThanOrEqual(bci, -1);

   100         Asserts.assertNotNull(method, "Method should not be null");

   101     }

   102 }