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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 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::onFlush(...)
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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.TestOnFlush
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*/
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public class TestOnFlush {
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static class OneEvent extends Event {
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}
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public static void main(String... args) throws Exception {
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testOnFlushNull();
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testOneEvent();
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testNoEvent();
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}
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private static void testOnFlushNull() {
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log("Entering testOnFlushNull()");
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try (RecordingStream rs = new RecordingStream()) {
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try {
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rs.onFlush(null);
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throw new AssertionError("Expected NullPointerException from onFlush(null");
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} catch (NullPointerException npe) {
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// OK; as expected
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}
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}
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log("Leaving testOnFlushNull()");
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}
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private static void testNoEvent() throws Exception {
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log("Entering testNoEvent()");
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CountDownLatch flush = new CountDownLatch(1);
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try (RecordingStream r = new RecordingStream()) {
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r.onFlush(() -> {
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flush.countDown();
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});
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r.startAsync();
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flush.await();
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}
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log("Leaving testNoEvent()");
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}
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private static void testOneEvent() throws InterruptedException {
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log("Entering testOneEvent()");
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CountDownLatch flush = new CountDownLatch(1);
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try (RecordingStream r = new RecordingStream()) {
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r.onEvent(e -> {
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// ignore event
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});
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r.onFlush(() -> {
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flush.countDown();
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});
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r.startAsync();
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OneEvent e = new OneEvent();
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e.commit();
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flush.await();
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}
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log("Leaving testOneEvent()");
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}
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private static void log(String msg) {
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System.out.println(msg);
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}
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}
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