/* * Copyright (c) 2018, 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.flightrecorder; import static jdk.test.lib.Asserts.assertTrue; import java.util.concurrent.TimeUnit; import java.util.concurrent.locks.Condition; import java.util.concurrent.locks.Lock; import java.util.concurrent.locks.ReentrantLock; import jdk.jfr.FlightRecorder; import jdk.jfr.FlightRecorderListener; /** * @test * @key jfr * @requires vm.hasJFR * @library /test/lib * @run main/othervm jdk.jfr.api.flightrecorder.TestFlightRecorderListenerRecorderInitialized */ public class TestFlightRecorderListenerRecorderInitialized { /** * Utility class to wait/notify */ private static class Signal { private static volatile boolean signalled; private static final Lock lock = new ReentrantLock(); private static final Condition cond = lock.newCondition(); private static void waitFor(long timeout, TimeUnit timeUnit) throws InterruptedException { try { lock.lock(); if (!signalled) { log("Waiting for FlightRecorder.recorderInitialized notification..."); cond.await(timeout, timeUnit); } } finally { lock.unlock(); } } private static void signal() { try { lock.lock(); signalled = true; cond.signalAll(); } finally { lock.unlock(); } } }; public static void main(String[] args) throws Throwable { FlightRecorder.addListener(new FlightRecorderListener() { @Override public void recorderInitialized(FlightRecorder recorder) { log("Recorder initialized"); Signal.signal(); } }); FlightRecorder.getFlightRecorder(); Signal.waitFor(3, TimeUnit.SECONDS); assertTrue(Signal.signalled, "FlightRecorderListener.recorderInitialized has not been called"); } private static void log(String s) { System.out.println(s); } }