com.sun.electric.tool.util.concurrent.barriers.SimpleTDBarrier Maven / Gradle / Ivy
/* -*- tab-width: 4 -*-
*
* Electric(tm) VLSI Design System
*
* File: SimpleTDBarrier.java
*
* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
*
* Electric(tm) is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* Electric(tm) 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 Electric(tm); see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, Mass 02111-1307, USA.
*/
package com.sun.electric.tool.util.concurrent.barriers;
import java.util.concurrent.atomic.AtomicInteger;
/**
* @author Felix Schmidt
*
*/
public class SimpleTDBarrier implements TDBarrier {
private AtomicInteger count;
public SimpleTDBarrier(int n) {
count = new AtomicInteger(n);
}
/*
* (non-Javadoc)
*
* @see
* com.sun.electric.tool.util.concurrent.barriers.TDBarrier#isTerminated()
*/
public boolean isTerminated() {
return count.get() == 0;
}
/*
* (non-Javadoc)
*
* @see
* com.sun.electric.tool.util.concurrent.barriers.TDBarrier#setActive(boolean
* )
*/
public void setActive(boolean state) {
if (state) {
count.getAndDecrement();
} else {
count.getAndIncrement();
}
}
/*
* (non-Javadoc)
*
* @see com.sun.electric.tool.util.concurrent.barriers.Barrier#await()
*/
@Deprecated
public void await() {
throw new UnsupportedOperationException();
}
}