/* * Copyright (c) 2008, 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. * * 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. */ import java.util.concurrent.*; /** * This is not a regression test, but a stress benchmark test for * 6602600: Fast removal of cancelled scheduled thread pool tasks * * This runs in the same wall clock time, but much reduced cpu time, * with the changes for 6602600. */ public class Stress { public static void main(String[] args) throws Throwable { final CountDownLatch count = new CountDownLatch(1000); final ScheduledThreadPoolExecutor pool = new ScheduledThreadPoolExecutor(100); pool.prestartAllCoreThreads(); final Runnable incTask = new Runnable() { public void run() { count.countDown(); }}; pool.scheduleAtFixedRate(incTask, 0, 10, TimeUnit.MILLISECONDS); count.await(); pool.shutdown(); pool.awaitTermination(1L, TimeUnit.DAYS); } }