strolch/utils/src/main/java/li/strolch/utils/concurrent/LockableObject.java

62 lines
1.6 KiB
Java

/*
* Copyright 2013 Robert von Burg <eitch@eitchnet.ch>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package li.strolch.utils.concurrent;
import java.util.concurrent.TimeUnit;
public class LockableObject {
private static long tryLockTime = 10000L;
public static void setTryLockTime(long tryLockTime) {
LockableObject.tryLockTime = tryLockTime;
}
private final ElementLock elementLock;
protected final String name;
public LockableObject(String name) {
this.name = name;
this.elementLock = new ElementLock(name, true);
}
public String getName() {
return this.name;
}
public static long getLockTime() {
return tryLockTime;
}
public void lock() {
// don't lock multiple times
if (this.elementLock.isHeldByCurrentThread() && this.elementLock.isLocked())
return;
this.elementLock.lock(TimeUnit.MILLISECONDS, tryLockTime);
}
/**
* @see java.util.concurrent.locks.ReentrantLock#unlock()
*/
public void releaseLock() {
while (this.elementLock.isHeldByCurrentThread() && this.elementLock.isLocked()) {
this.elementLock.unlock();
}
}
}