author | egahlin |
Thu, 28 Nov 2019 16:38:25 +0100 | |
changeset 59310 | 72f3dd43dd28 |
parent 58863 | c16ac7a2eba4 |
child 59327 | 2c3578aa0bdf |
permissions | -rw-r--r-- |
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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.time.Instant; |
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import java.util.concurrent.CompletableFuture; |
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import java.util.concurrent.CountDownLatch; |
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import java.util.concurrent.atomic.AtomicLong; |
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import java.util.concurrent.atomic.AtomicReference; |
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import jdk.jfr.Event; |
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import jdk.jfr.Recording; |
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import jdk.jfr.consumer.EventStream; |
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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::close() |
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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.TestClose |
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*/ |
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public class TestClose { |
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private static class CloseEvent extends Event { |
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} |
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public static void main(String... args) throws Exception { |
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testCloseUnstarted(); |
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testCloseStarted(); |
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testCloseTwice(); |
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testCloseStreaming(); |
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testCloseMySelf(); |
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testCloseNoEvents(); |
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} |
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private static void testCloseMySelf() throws Exception { |
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log("Entering testCloseMySelf()"); |
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CountDownLatch l1 = new CountDownLatch(1); |
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CountDownLatch l2 = new CountDownLatch(1); |
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RecordingStream r = new RecordingStream(); |
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r.onEvent(e -> { |
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try { |
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l1.await(); |
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r.close(); |
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l2.countDown(); |
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} catch (InterruptedException ie) { |
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throw new Error(ie); |
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} |
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}); |
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r.startAsync(); |
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CloseEvent c = new CloseEvent(); |
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c.commit(); |
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l1.countDown(); |
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l2.await(); |
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log("Leaving testCloseMySelf()"); |
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} |
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private static void testCloseStreaming() throws Exception { |
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log("Entering testCloseStreaming()"); |
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CountDownLatch streaming = new CountDownLatch(1); |
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RecordingStream r = new RecordingStream(); |
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AtomicLong count = new AtomicLong(); |
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r.onEvent(e -> { |
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if (count.incrementAndGet() > 100) { |
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streaming.countDown(); |
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} |
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}); |
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r.startAsync(); |
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var streamingLoop = CompletableFuture.runAsync(() -> { |
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while (true) { |
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CloseEvent c = new CloseEvent(); |
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c.commit(); |
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} |
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}); |
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streaming.await(); |
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r.close(); |
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streamingLoop.cancel(true); |
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log("Leaving testCloseStreaming()"); |
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} |
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private static void testCloseStarted() { |
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log("Entering testCloseStarted()"); |
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RecordingStream r = new RecordingStream(); |
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r.startAsync(); |
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r.close(); |
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log("Leaving testCloseStarted()"); |
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} |
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private static void testCloseUnstarted() { |
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log("Entering testCloseUnstarted()"); |
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RecordingStream r = new RecordingStream(); |
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r.close(); |
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log("Leaving testCloseUnstarted()"); |
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} |
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private static void testCloseTwice() { |
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log("Entering testCloseTwice()"); |
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RecordingStream r = new RecordingStream(); |
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r.startAsync(); |
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r.close(); |
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r.close(); |
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log("Leaving testCloseTwice()"); |
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} |
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private static void testCloseNoEvents() throws Exception { |
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try (Recording r = new Recording()) { |
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r.start(); |
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CountDownLatch finished = new CountDownLatch(2); |
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AtomicReference<Thread> streamingThread = new AtomicReference<>(); |
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try (EventStream es = EventStream.openRepository()) { |
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es.setStartTime(Instant.EPOCH); |
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es.onFlush( () -> { |
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streamingThread.set(Thread.currentThread()); |
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finished.countDown();; |
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}); |
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es.startAsync(); |
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finished.await(); |
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} // <- EventStream::close should terminate thread |
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while (streamingThread.get().isAlive()) { |
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Thread.sleep(10); |
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} |
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} |
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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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} |