1 /*

     2  * Copyright (c) 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 package jdk.jfr.api.consumer.streaming;

    26 

    27 import java.time.Duration;

    28 import java.time.Instant;

    29 import java.util.concurrent.atomic.AtomicInteger;

    30 

    31 import jdk.jfr.consumer.EventStream;

    32 

    33 /**

    34  * @test

    35  * @summary Test that a stream ends/closes when an application crashes.

    36  * @key jfr

    37  * @requires vm.hasJFR

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

    39  * @modules jdk.jfr jdk.attach java.base/jdk.internal.misc

    40  *

    41  * @run main/othervm jdk.jfr.api.consumer.streaming.TestJVMCrash

    42  */

    43 public class TestJVMCrash {

    44 

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

    46         int id = 1;

    47         while (true) {

    48             TestProcess process = new TestProcess("crash-application-" + id++);

    49             AtomicInteger eventCounter = new AtomicInteger();

    50             try (EventStream es = EventStream.openRepository(process.getRepository())) {

    51                 // Start from first event in repository

    52                 es.setStartTime(Instant.EPOCH);

    53                 es.onEvent(e -> {

    54                     if (eventCounter.incrementAndGet() == TestProcess.NUMBER_OF_EVENTS) {

    55                         process.crash();

    56                     }

    57                 });

    58                 es.startAsync();

    59                 // If crash corrupts chunk in repository, retry in 30 seconds

    60                 es.awaitTermination(Duration.ofSeconds(30));

    61                 if (eventCounter.get() == TestProcess.NUMBER_OF_EVENTS) {

    62                     return;

    63                 }

    64                 System.out.println("Incorrect event count. Retrying...");

    65             }

    66         }

    67     }

    68 }