73 lines
2.7 KiB
Java
73 lines
2.7 KiB
Java
/*
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* Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import jdk.test.lib.apps.LingeredApp;
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import java.util.concurrent.locks.Lock;
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import java.util.concurrent.locks.ReentrantLock;
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public class LingeredAppWithConcurrentLock extends LingeredApp {
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private static final Lock lock = new ReentrantLock();
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public static void lockMethod(Lock lock) {
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lock.lock();
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synchronized (lock) {
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try {
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Thread.sleep(300000);
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} catch (InterruptedException e) {
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throw new RuntimeException(e);
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}
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}
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}
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public static void main(String args[]) {
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Thread classLock1 = new Thread(() -> lockMethod(lock));
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Thread classLock2 = new Thread(() -> lockMethod(lock));
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Thread classLock3 = new Thread(() -> lockMethod(lock));
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classLock1.start();
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classLock2.start();
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classLock3.start();
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// Wait until all threads have reached their blocked or timed wait state
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while ((classLock1.getState() != Thread.State.WAITING &&
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classLock1.getState() != Thread.State.TIMED_WAITING) ||
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(classLock2.getState() != Thread.State.WAITING &&
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classLock2.getState() != Thread.State.TIMED_WAITING) ||
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(classLock3.getState() != Thread.State.WAITING &&
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classLock3.getState() != Thread.State.TIMED_WAITING)) {
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try {
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Thread.sleep(100);
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} catch (InterruptedException ex) {
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}
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}
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System.out.println("classLock1 state: " + classLock1.getState());
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System.out.println("classLock2 state: " + classLock2.getState());
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System.out.println("classLock3 state: " + classLock3.getState());
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LingeredApp.main(args);
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}
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}
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