/* This file is part of the db4o object database http://www.db4o.com
Copyright (C) 2004 - 2011 Versant Corporation http://www.versant.com
db4o is free software; you can redistribute it and/or modify it under
the terms of version 3 of the GNU General Public License as published
by the Free Software Foundation.
db4o 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
for more details.
You should have received a copy of the GNU General Public License along
with this program. If not, see http://www.gnu.org/licenses/. */
package com.db4o.foundation;
public class TimeoutBlockingQueue<T> extends PausableBlockingQueue<T> implements TimeoutBlockingQueue4<T> {
private long expirationDate;
private final long maxTimeToRemainPaused;
public TimeoutBlockingQueue(long maxTimeToRemainPaused) {
this.maxTimeToRemainPaused = maxTimeToRemainPaused;
}
@Override
public boolean pause() {
reset();
return super.pause();
}
public void check() {
long now = System.currentTimeMillis();
if (now > expirationDate) {
resume();
}
}
public void reset() {
expirationDate = System.currentTimeMillis() + maxTimeToRemainPaused;
}
}