90 lines
3.1 KiB
Java
90 lines
3.1 KiB
Java
/*
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* Copyright 2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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/*
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* @test
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* @bug 6467152
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*
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* @summary deadlock occurs in LogManager initialization and JVM termination
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* @author Serguei Spitsyn / Hittachi
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*
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* @build LoggingDeadlock2
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* @run main/timeout=15 LoggingDeadlock2
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*
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* There is a clear deadlock between LogManager.<clinit> and
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* Cleaner.run() methods.
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* T1 thread:
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* The LogManager.<clinit> creates LogManager.manager object,
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* sets shutdown hook with the Cleaner class and then waits
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* to lock the LogManager.manager monitor.
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* T2 thread:
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* It is started by the System.exit() as shutdown hook thread.
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* It locks the LogManager.manager monitor and then calls the
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* static methods of the LogManager class (in this particular
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* case it is a trick of the inner classes implementation).
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* It is waits when the LogManager.<clinit> is completed.
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*
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* This is a regression test for this bug.
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*/
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import java.util.logging.LogManager;
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public class LoggingDeadlock2 implements Runnable {
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static final java.io.PrintStream out = System.out;
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static Object lock = new Object();
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static int c = 0;
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public static void main(String arg[]) {
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out.println("\nThis test checks that there is no deadlock.");
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out.println("If not crashed or timed-out then it is passed.");
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try {
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new Thread(new LoggingDeadlock2()).start();
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synchronized(lock) {
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c++;
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if (c == 2) lock.notify();
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else lock.wait();
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}
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LogManager log = LogManager.getLogManager();
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out.println("Test passed");
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}
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catch(Exception e) {
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e.printStackTrace();
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out.println("Test FAILED"); // Not expected
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}
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}
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public void run() {
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try {
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synchronized(lock) {
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c++;
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if (c == 2) lock.notify();
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else lock.wait();
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}
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System.exit(1);
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}
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catch(Exception e) {
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e.printStackTrace();
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out.println("Test FAILED"); // Not expected
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}
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}
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}
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