/*
* JBoss, Home of Professional Open Source
* Copyright 2009 Red Hat Inc. and/or its affiliates and other
* contributors as indicated by the @author tags. All rights reserved.
* See the copyright.txt in the distribution for a full listing of
* individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.infinispan.util.concurrent.locks.containers;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.ReentrantLock;
import org.infinispan.util.concurrent.locks.VisibleOwnerReentrantLock;
/**
* A per-entry lock container for ReentrantLocks
*
* @author Manik Surtani
* @since 4.0
*/
public class ReentrantPerEntryLockContainer extends AbstractPerEntryLockContainer<ReentrantLock> {
public ReentrantPerEntryLockContainer(int concurrencyLevel) {
super(concurrencyLevel);
}
@Override
protected ReentrantLock newLock() {
return new VisibleOwnerReentrantLock();
}
@Override
public boolean ownsLock(Object key, Object ignored) {
ReentrantLock l = getLockFromMap(key);
return l != null && l.isHeldByCurrentThread();
}
@Override
public boolean isLocked(Object key) {
ReentrantLock l = getLockFromMap(key);
return l != null && l.isLocked();
}
private ReentrantLock getLockFromMap(Object key) {
return locks.get(key);
}
@Override
protected void unlock(ReentrantLock l, Object unused) {
l.unlock();
}
@Override
protected boolean tryLock(ReentrantLock lock, long timeout, TimeUnit unit, Object unused) throws InterruptedException {
return lock.tryLock(timeout, unit);
}
}