68 lines
2.3 KiB
Java
68 lines
2.3 KiB
Java
/*
|
|
* Copyright (c) 2007, 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.
|
|
*
|
|
* 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 nsk.share.locks;
|
|
|
|
import nsk.share.Wicket;
|
|
|
|
/*
|
|
* Thread class used for deadlock creation, requires instance of DeadlockLocker to created deadlock.
|
|
* Objects of DeadlockedThread should not be created directly, to create deadlocked threads
|
|
* use class DeadlockMaker
|
|
*/
|
|
public class DeadlockedThread extends Thread {
|
|
private DeadlockLocker locker;
|
|
|
|
private Wicket dedlockResolutionWicket = new Wicket();
|
|
|
|
// should call readyWicket.unlock() when deadlock is ready
|
|
public DeadlockedThread(DeadlockLocker locker) {
|
|
this.locker = locker;
|
|
}
|
|
|
|
public void run() {
|
|
locker.lock();
|
|
|
|
// reach here if deadlock was resolved
|
|
dedlockResolutionWicket.unlockAll();
|
|
|
|
// sleep if deadlock was resolved
|
|
try {
|
|
sleep(Long.MAX_VALUE);
|
|
} catch (InterruptedException e) {
|
|
// ignore
|
|
}
|
|
}
|
|
|
|
// If it is expected that deadlock with using of this DeadlockedThread should be resolved
|
|
// this method can be used for waiting this event
|
|
public void waitDeadlockResolution() {
|
|
// if deadlock was resolved DeadlockedThread calls dedlockResolutionWicket.unlockAll()
|
|
dedlockResolutionWicket.waitFor();
|
|
}
|
|
|
|
public DeadlockLocker getLocker() {
|
|
return locker;
|
|
}
|
|
|
|
}
|