1 /*

     2  * Copyright (c) 2013, 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.runtime;

    27 

    28 import java.time.Duration;

    29 import java.util.List;

    30 

    31 import jdk.jfr.Recording;

    32 import jdk.jfr.consumer.RecordedClass;

    33 import jdk.jfr.consumer.RecordedEvent;

    34 import jdk.jfr.consumer.RecordedFrame;

    35 import jdk.jfr.consumer.RecordedStackTrace;

    36 import jdk.jfr.consumer.RecordedThread;

    37 import jdk.test.lib.Asserts;

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

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

    40 

    41 /*

    42  * @test

    43  * @key jfr

    44  * @library /test/lib

    45  * @run main/othervm jdk.jfr.event.runtime.TestExceptionEvents

    46  */

    47 public class TestExceptionEvents {

    48 

    49     private static final String EXCEPTION_EVENT_PATH = EventNames.JavaExceptionThrow;

    50     private static final String ERROR_EVENT_PATH  = EventNames.JavaErrorThrow;

    51     private static final String EXCEPTION_STATISTICS_PATH = EventNames.ExceptionStatistics;

    52 

    53     private static final String EXCEPTION_MESSAGE = "exceptiontest";

    54     private static final String ERROR_MESSAGE = "errortest";

    55     private static final String THROWABLE_MESSAGE = "throwabletest";

    56 

    57     private static final int ITERATIONS = 10;

    58 

    59     private static int exceptionCount = 0;

    60 

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

    62         Recording recording = createRecording();

    63 

    64         List<RecordedEvent> events = Events.fromRecording(recording);

    65         checkStatisticsEvent(events, exceptionCount);

    66         checkThrowableEvents(events, EXCEPTION_EVENT_PATH, ITERATIONS, MyException.class, EXCEPTION_MESSAGE);

    67         checkThrowableEvents(events, ERROR_EVENT_PATH, ITERATIONS, MyError.class, ERROR_MESSAGE);

    68         checkThrowableEvents(events, EXCEPTION_EVENT_PATH, ITERATIONS, MyThrowable.class, THROWABLE_MESSAGE);

    69         checkExceptionStackTrace();

    70     }

    71 

    72     private static void checkExceptionStackTrace() throws Exception {

    73         @SuppressWarnings("serial")

    74         class TestError extends Error {

    75         }

    76         @SuppressWarnings("serial")

    77         class TestException extends Exception {

    78         }

    79 

    80         try (Recording r = new Recording()) {

    81             r.enable(EventNames.JavaErrorThrow).withStackTrace();

    82             r.enable(EventNames.JavaExceptionThrow).withStackTrace();

    83             r.start();

    84             try {

    85                 throw new TestError();

    86             } catch (Error e) {

    87                 System.out.println(e.getClass() + " thrown!");

    88             }

    89             try {

    90                 throw new TestException();

    91             } catch (Exception e) {

    92                 System.out.println(e.getClass() + " thrown!");

    93             }

    94             try {

    95                 throw new Exception();

    96             } catch (Exception e) {

    97                 System.out.println(e.getClass() + " thrown!");

    98             }

    99             r.stop();

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

   101             Events.hasEvents(events);

   102             for (RecordedEvent e : events) {

   103                 RecordedStackTrace rs = e.getStackTrace();

   104                 RecordedClass rc = e.getValue("thrownClass");

   105                 List<RecordedFrame> frames = rs.getFrames();

   106                 RecordedFrame topFrame = frames.get(0);

   107                 System.out.println(rc.getName() + " Top frame: " + topFrame.getMethod().getName());

   108                 if (!topFrame.getMethod().getName().equals("<init>")) {

   109                     throw new Exception("Expected name of top frame to be <init>");

   110                 }

   111             }

   112         }

   113     }

   114 

   115     private static Recording createRecording() throws Exception {

   116         Recording recording = new Recording();

   117         recording.enable(EXCEPTION_STATISTICS_PATH);

   118         recording.enable(EXCEPTION_EVENT_PATH).withThreshold(Duration.ofMillis(0));

   119         recording.enable(ERROR_EVENT_PATH).withThreshold(Duration.ofMillis(0));

   120         recording.start();

   121 

   122         for (int i = 0; i < ITERATIONS; i++) {

   123             try {

   124                 throw new MyException(EXCEPTION_MESSAGE);

   125             } catch (MyException e) {

   126                 exceptionCount++;

   127             }

   128             try {

   129                 throw new MyError(ERROR_MESSAGE);

   130             } catch (MyError e) {

   131                 exceptionCount++;

   132             }

   133             try {

   134                 throw new MyThrowable(THROWABLE_MESSAGE);

   135             } catch (MyThrowable t) {

   136                 exceptionCount++;

   137             }

   138         }

   139         recording.stop();

   140         return recording;

   141     }

   142 

   143 

   144     private static void checkStatisticsEvent(List<RecordedEvent> events, long minCount) throws Exception {

   145         // Events are not guaranteed to be in chronological order, take highest value.

   146         long count = -1;

   147         for(RecordedEvent event : events) {

   148             if (Events.isEventType(event, EXCEPTION_STATISTICS_PATH)) {

   149                 System.out.println("Event: " + event);

   150                 count = Math.max(count, Events.assertField(event, "throwables").getValue());

   151                 System.out.println("count=" +  count);

   152             }

   153         }

   154         Asserts.assertTrue(count != -1, "No events of type " + EXCEPTION_STATISTICS_PATH);

   155         Asserts.assertGreaterThanOrEqual(count, minCount, "Too few exception count in statistics event");

   156     }

   157 

   158     private static void checkThrowableEvents(List<RecordedEvent> events, String eventName,

   159         int excpectedEvents, Class<?> expectedClass, String expectedMessage) throws Exception {

   160         int count = 0;

   161         for(RecordedEvent event : events) {

   162             if (Events.isEventType(event, eventName)) {

   163                 String message = Events.assertField(event, "message").getValue();

   164                 if (expectedMessage.equals(message)) {

   165                     RecordedThread t = event.getThread();

   166                     String threadName = t.getJavaName();

   167                     if (threadName != null && threadName.equals(Thread.currentThread().getName())) {

   168                         RecordedClass jc = event.getValue("thrownClass");

   169                         if (jc.getName().equals(expectedClass.getName())) {

   170                             count++;

   171                         }

   172                     }

   173                 }

   174             }

   175         }

   176         Asserts.assertEquals(count, excpectedEvents, "Wrong event count for type " + eventName);

   177     }

   178 

   179     private static class MyException extends Exception {

   180         private static final long serialVersionUID = -2614309279743448910L;

   181         public MyException(String msg) {

   182             super(msg);

   183         }

   184     }

   185 

   186     private static class MyError extends Error {

   187         private static final long serialVersionUID = -8519872786387358196L;

   188         public MyError(String msg) {

   189             super(msg);

   190         }

   191     }

   192 

   193     private static class MyThrowable extends Throwable {

   194         private static final long serialVersionUID = -7929442863511070361L;

   195         public MyThrowable(String msg) {

   196             super(msg);

   197         }

   198     }

   199 }