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 26 package jdk.jfr.api.consumer.recordingstream; 27 28 import java.util.concurrent.CountDownLatch; 29 30 import jdk.jfr.Event; 31 import jdk.jfr.consumer.RecordingStream; 32 33 /** 34 * @test 35 * @summary Tests RecordingStream::startAsync() 36 * @key jfr 37 * @requires vm.hasJFR 38 * @library /test/lib 39 * @run main/othervm jdk.jfr.api.consumer.recordingstream.TestStartAsync 40 */ 41 public class TestStartAsync { 42 static class StartEvent extends Event { 43 } 44 main(String... args)45 public static void main(String... args) throws Exception { 46 testStart(); 47 testStartTwice(); 48 testStartClosed(); 49 } 50 testStartTwice()51 private static void testStartTwice() throws Exception { 52 try (RecordingStream rs = new RecordingStream()) { 53 rs.startAsync(); 54 try { 55 rs.startAsync(); 56 throw new AssertionError("Expected IllegalStateException if started twice"); 57 } catch (IllegalStateException ise) { 58 // OK, as expected 59 } 60 } 61 } 62 testStart()63 static void testStart() throws Exception { 64 CountDownLatch started = new CountDownLatch(1); 65 try (RecordingStream rs = new RecordingStream()) { 66 rs.onEvent(e -> { 67 started.countDown(); 68 }); 69 rs.startAsync(); 70 StartEvent e = new StartEvent(); 71 e.commit(); 72 started.await(); 73 } 74 } 75 testStartClosed()76 static void testStartClosed() { 77 RecordingStream rs = new RecordingStream(); 78 rs.close(); 79 try { 80 rs.startAsync(); 81 throw new AssertionError("Expected IllegalStateException"); 82 } catch (IllegalStateException ise) { 83 // OK, as expected. 84 } 85 } 86 } 87