test/jdk/jdk/jfr/api/consumer/recordingstream/TestDisable.java
author egahlin
Fri, 27 Sep 2019 13:20:04 +0200
branchJEP-349-branch
changeset 58373 849a45ac808a
parent 58271 e47423f1318b
permissions -rw-r--r--
Improve test coverage for RecordingStream::enable(...) and RecordingStream:disable(...)
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/*
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 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.  Oracle designates this
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 * particular file as subject to the "Classpath" exception as provided
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 * by Oracle in the LICENSE file that accompanied this code.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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package jdk.jfr.api.consumer.recordingstream;
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import java.util.concurrent.CountDownLatch;
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import java.util.concurrent.atomic.AtomicBoolean;
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import java.util.function.Consumer;
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import jdk.jfr.Event;
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import jdk.jfr.consumer.RecordingStream;
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/**
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 * @test
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 * @summary Tests RecordingStream::disable(...)
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 * @key jfr
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 * @requires vm.hasJFR
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 * @library /test/lib
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 * @run main/othervm jdk.jfr.api.consumer.recordingstream.TestDisable
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 */
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public class TestDisable {
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    private static class DisabledEvent extends Event {
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    }
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    private static class EnabledEvent extends Event {
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    }
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    public static void main(String... args) throws Exception {
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        testDisableWithClass();
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        testDisableWithEventName();
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    }
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    private static void testDisableWithEventName() {
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        test(r -> r.disable(DisabledEvent.class.getName()));
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    }
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    private static void testDisableWithClass() {
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        test(r -> r.disable(DisabledEvent.class));
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    }
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    private static void test(Consumer<RecordingStream> disablement) {
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        CountDownLatch twoEvent = new CountDownLatch(2);
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        AtomicBoolean fail = new AtomicBoolean(false);
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        try(RecordingStream r = new RecordingStream()) {
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            r.onEvent(e -> {
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                if (e.getEventType().getName().equals(DisabledEvent.class.getName())) {
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                    fail.set(true);
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                }
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                twoEvent.countDown();
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            });
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            disablement.accept(r);
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            r.startAsync();
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            EnabledEvent e1 = new EnabledEvent();
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            e1.commit();
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            DisabledEvent d1 = new DisabledEvent();
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            d1.commit();
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            EnabledEvent e2 = new EnabledEvent();
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            e2.commit();
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            try {
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                twoEvent.await();
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            } catch (InterruptedException ie) {
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                throw new RuntimeException("Unexpexpected interruption of thread", ie);
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            }
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            if (fail.get()) {
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                throw new RuntimeException("Should not receive a disabled event");
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            }
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        }
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    }
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}