/* -*- tab-width: 4 -*-
*
* Electric(tm) VLSI Design System
*
* File: OverlapHistoryAtomics.java
* Written by Team 7: Felix Schmidt, Daniel Lechner
*
* This code has been developed at the Karlsruhe Institute of Technology (KIT), Germany,
* as part of the course "Multicore Programming in Practice: Tools, Models, and Languages".
* Contact instructor: Dr. Victor Pankratius (pankratius@ipd.uka.de)
*
* Copyright (c) 2010 Sun Microsystems and Static Free Software
*
* 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.placement.forceDirected2.forceDirected.util.history;
import com.sun.electric.tool.placement.PlacementFrame.PlacementNode;
import java.util.concurrent.atomic.AtomicReference;
/**
* Parallel Placement
*/
public class OverlapHistoryAtomics implements IOverlapHistory<PlacementNode> {
public static OverlapHistoryAtomics getInstance() {
return instance;
}
private AtomicReference<OverlapHistoryNone> history;
private static OverlapHistoryAtomics instance = new OverlapHistoryAtomics();
private OverlapHistoryAtomics() {
this.history.set(OverlapHistoryNone.getInstance());
}
public boolean isMovementInHistory(PlacementNode node1, PlacementNode node2) {
return this.history.get().isMovementInHistory(node1, node2);
}
public void removeHistory(PlacementNode node1, PlacementNode node2) {
this.history.get().removeHistory(node1, node2);
}
public void saveHistory(PlacementNode node1, PlacementNode node2) {
this.history.get().saveHistory(node1, node2);
}
}