| /* |
| * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package jdk.jfr.api.consumer.recordingstream; |
| |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import jdk.jfr.Event; |
| import jdk.jfr.consumer.RecordingStream; |
| |
| /** |
| * @test |
| * @summary Tests RecordingStream::start() |
| * @key jfr |
| * @requires vm.hasJFR |
| * @library /test/lib /test/jdk |
| * @build jdk.jfr.api.consumer.recordingstream.EventProducer |
| * @run main/othervm jdk.jfr.api.consumer.recordingstream.TestStart |
| */ |
| public class TestStart { |
| static class StartEvent extends Event { |
| } |
| public static void main(String... args) throws Exception { |
| testStart(); |
| testStartOnEvent(); |
| testStartTwice(); |
| testStartClosed(); |
| } |
| |
| private static void testStartTwice() throws Exception { |
| log("Entering testStartTwice()"); |
| CountDownLatch started = new CountDownLatch(1); |
| try (RecordingStream rs = new RecordingStream()) { |
| EventProducer t = new EventProducer(); |
| t.start(); |
| Thread thread = new Thread() { |
| public void run() { |
| rs.start(); |
| } |
| }; |
| thread.start(); |
| rs.onEvent(e -> { |
| if (started.getCount() > 0) { |
| started.countDown(); |
| } |
| }); |
| started.await(); |
| t.kill(); |
| try { |
| rs.start(); |
| throw new AssertionError("Expected IllegalStateException if started twice"); |
| } catch (IllegalStateException ise) { |
| // OK, as expected |
| } |
| } |
| log("Leaving testStartTwice()"); |
| } |
| |
| static void testStart() throws Exception { |
| log("Entering testStart()"); |
| CountDownLatch started = new CountDownLatch(1); |
| try (RecordingStream rs = new RecordingStream()) { |
| rs.onEvent(e -> { |
| started.countDown(); |
| }); |
| EventProducer t = new EventProducer(); |
| t.start(); |
| Thread thread = new Thread() { |
| public void run() { |
| rs.start(); |
| } |
| }; |
| thread.start(); |
| started.await(); |
| t.kill(); |
| } |
| log("Leaving testStart()"); |
| } |
| |
| static void testStartOnEvent() throws Exception { |
| log("Entering testStartOnEvent()"); |
| AtomicBoolean ISE = new AtomicBoolean(false); |
| CountDownLatch startedTwice = new CountDownLatch(1); |
| try (RecordingStream rs = new RecordingStream()) { |
| rs.onEvent(e -> { |
| try { |
| rs.start(); // must not deadlock |
| } catch (IllegalStateException ise) { |
| if (!ISE.get()) { |
| ISE.set(true); |
| startedTwice.countDown(); |
| } |
| } |
| }); |
| EventProducer t = new EventProducer(); |
| t.start(); |
| Thread thread = new Thread() { |
| public void run() { |
| rs.start(); |
| } |
| }; |
| thread.start(); |
| startedTwice.await(); |
| t.kill(); |
| if (!ISE.get()) { |
| throw new AssertionError("Expected IllegalStateException"); |
| } |
| } |
| log("Leaving testStartOnEvent()"); |
| } |
| |
| static void testStartClosed() { |
| log("Entering testStartClosed()"); |
| RecordingStream rs = new RecordingStream(); |
| rs.close(); |
| try { |
| rs.start(); |
| throw new AssertionError("Expected IllegalStateException"); |
| } catch (IllegalStateException ise) { |
| // OK, as expected. |
| } |
| log("Leaving testStartClosed()"); |
| } |
| |
| private static void log(String msg) { |
| System.out.println(msg); |
| } |
| } |