| /* |
| * 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 java.util.concurrent.atomic.AtomicInteger; |
| import java.util.function.Consumer; |
| |
| import jdk.jfr.Event; |
| import jdk.jfr.consumer.RecordedEvent; |
| import jdk.jfr.consumer.RecordingStream; |
| |
| /** |
| * @test |
| * @summary Tests RecordingStrream::remove(...) |
| * @key jfr |
| * @requires vm.hasJFR |
| * @library /test/lib |
| * @run main/othervm jdk.jfr.api.consumer.recordingstream.TestRemove |
| */ |
| public class TestRemove { |
| |
| static class RemoveEvent extends Event { |
| |
| } |
| |
| public static void main(String... args) throws Exception { |
| testRemoveNull(); |
| testRemoveOnFlush(); |
| testRemoveOnClose(); |
| testRemoveOnEvent(); |
| } |
| |
| private static void testRemoveNull() { |
| log("Entering testRemoveNull()"); |
| try (RecordingStream rs = new RecordingStream()) { |
| try { |
| rs.remove(null); |
| throw new AssertionError("Expected NullPointerException from remove(null"); |
| } catch (NullPointerException npe) { |
| // OK; as expected |
| } |
| } |
| log("Leaving testRemoveNull()"); |
| } |
| |
| private static void testRemoveOnEvent() throws Exception { |
| log("Entering testRemoveOnEvent()"); |
| try (RecordingStream rs = new RecordingStream()) { |
| AtomicInteger counter = new AtomicInteger(0); |
| CountDownLatch events = new CountDownLatch(2); |
| Consumer<RecordedEvent> c1 = e -> { |
| counter.incrementAndGet(); |
| }; |
| |
| Consumer<RecordedEvent> c2 = e -> { |
| events.countDown(); |
| }; |
| rs.onEvent(c1); |
| rs.onEvent(c2); |
| |
| rs.remove(c1); |
| rs.startAsync(); |
| RemoveEvent r1 = new RemoveEvent(); |
| r1.commit(); |
| RemoveEvent r2 = new RemoveEvent(); |
| r2.commit(); |
| events.await(); |
| if (counter.get() > 0) { |
| throw new AssertionError("OnEvent handler not removed!"); |
| } |
| } |
| log("Leaving testRemoveOnEvent()"); |
| } |
| |
| private static void testRemoveOnClose() { |
| log("Entering testRemoveOnClose()"); |
| try (RecordingStream rs = new RecordingStream()) { |
| AtomicBoolean onClose = new AtomicBoolean(false); |
| Runnable r = () -> { |
| onClose.set(true); |
| }; |
| rs.onClose(r); |
| rs.remove(r); |
| rs.close(); |
| if (onClose.get()) { |
| throw new AssertionError("onClose handler not removed!"); |
| } |
| } |
| log("Leaving testRemoveOnClose()"); |
| } |
| |
| private static void testRemoveOnFlush() throws Exception { |
| log("Entering testRemoveOnFlush()"); |
| try (RecordingStream rs = new RecordingStream()) { |
| AtomicInteger flushCount = new AtomicInteger(2); |
| AtomicBoolean removeExecuted = new AtomicBoolean(false); |
| Runnable onFlush1 = () -> { |
| removeExecuted.set(true); |
| }; |
| Runnable onFlush2 = () -> { |
| flushCount.incrementAndGet(); |
| }; |
| |
| rs.onFlush(onFlush1); |
| rs.onFlush(onFlush2); |
| rs.remove(onFlush1); |
| rs.startAsync(); |
| while (flushCount.get() < 2) { |
| RemoveEvent r = new RemoveEvent(); |
| r.commit(); |
| Thread.sleep(100); |
| } |
| |
| if (removeExecuted.get()) { |
| throw new AssertionError("onFlush handler not removed!"); |
| } |
| } |
| log("Leaving testRemoveOnFlush()"); |
| } |
| |
| private static void log(String msg) { |
| System.out.println(msg); |
| } |
| } |