/* * Copyright (c) 2024, 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 jdk.test.lib.apps.LingeredApp; import java.util.concurrent.locks.Lock; import java.util.concurrent.locks.ReentrantLock; public class LingeredAppWithConcurrentLock extends LingeredApp { private static final Lock lock = new ReentrantLock(); public static void lockMethod(Lock lock) { lock.lock(); synchronized (lock) { try { Thread.sleep(300000); } catch (InterruptedException e) { throw new RuntimeException(e); } } } public static void main(String args[]) { Thread classLock1 = new Thread(() -> lockMethod(lock)); Thread classLock2 = new Thread(() -> lockMethod(lock)); Thread classLock3 = new Thread(() -> lockMethod(lock)); classLock1.start(); classLock2.start(); classLock3.start(); // Wait until all threads have reached their blocked or timed wait state while ((classLock1.getState() != Thread.State.WAITING && classLock1.getState() != Thread.State.TIMED_WAITING) || (classLock2.getState() != Thread.State.WAITING && classLock2.getState() != Thread.State.TIMED_WAITING) || (classLock3.getState() != Thread.State.WAITING && classLock3.getState() != Thread.State.TIMED_WAITING)) { try { Thread.sleep(100); } catch (InterruptedException ex) { } } System.out.println("classLock1 state: " + classLock1.getState()); System.out.println("classLock2 state: " + classLock2.getState()); System.out.println("classLock3 state: " + classLock3.getState()); LingeredApp.main(args); } }