/*******************************************************************************
    * SAT4J: a SATisfiability library for Java Copyright (C) 2004, 2012 Artois University and CNRS
    *
    * All rights reserved. This program and the accompanying materials
    * are made available under the terms of the Eclipse Public License v1.0
    * which accompanies this distribution, and is available at
    *  http://www.eclipse.org/legal/epl-v10.html
    *
    * Alternatively, the contents of this file may be used under the terms of
   * either the GNU Lesser General Public License Version 2.1 or later (the
   * "LGPL"), in which case the provisions of the LGPL are applicable instead
   * of those above. If you wish to allow use of your version of this file only
   * under the terms of the LGPL, and not to allow others to use your version of
   * this file under the terms of the EPL, indicate your decision by deleting
   * the provisions above and replace them with the notice and other provisions
   * required by the LGPL. If you do not delete the provisions above, a recipient
   * may use your version of this file under the terms of the EPL or the LGPL.
   *
   * Based on the original MiniSat specification from:
   *
   * An extensible SAT solver. Niklas Een and Niklas Sorensson. Proceedings of the
   * Sixth International Conference on Theory and Applications of Satisfiability
   * Testing, LNCS 2919, pp 502-518, 2003.
   *
   * See www.minisat.se for the original solver in C++.
   *
   * Contributors:
   *   CRIL - initial API and implementation
   *******************************************************************************/
  package org.sat4j.tools;
  
  import org.sat4j.specs.IConstr;
  import org.sat4j.specs.ISolverService;
  import org.sat4j.specs.Lbool;
  
  public class SpeedTracing extends SearchListenerAdapter<ISolverService> {
  
      private static final long serialVersionUID = 1L;
  
      private final IVisualizationTool visuTool;
      private final IVisualizationTool cleanVisuTool;
      private final IVisualizationTool restartVisuTool;
  
      private long begin, end;
      private int counter;
      private long index;
  
      private double maxY;
  
      public SpeedTracing(IVisualizationTool visuTool,
              IVisualizationTool cleanVisuTool, IVisualizationTool restartVisuTool) {
          this.visuTool = visuTool;
          this.cleanVisuTool = cleanVisuTool;
          this.restartVisuTool = restartVisuTool;
  
          visuTool.init();
          cleanVisuTool.init();
          restartVisuTool.init();
  
          this.begin = System.currentTimeMillis();
          this.counter = 0;
          this.index = 0;
          this.maxY = 0;
      }
  
      @Override
      public void propagating(int p, IConstr reason) {
          this.end = System.currentTimeMillis();
          double y;
          if (this.end - this.begin >= 2000) {
              long tmp = this.end - this.begin;
              this.index += tmp;
              y = this.counter / tmp * 1000;
              if (y > this.maxY) {
                  this.maxY = y;
              }
              this.visuTool.addPoint(this.index / 1000.0, y);
              this.cleanVisuTool.addPoint(this.index / 1000.0, 0);
              this.restartVisuTool.addPoint(this.index / 1000.0, 0);
              this.begin = System.currentTimeMillis();
              this.counter = 0;
          }
          this.counter++;
      }
  
      @Override
      public void end(Lbool result) {
          this.visuTool.end();
          this.cleanVisuTool.end();
          this.restartVisuTool.end();
      }
  
      @Override
      public void cleaning() {
          this.end = System.currentTimeMillis();
          long indexClean = this.index + this.end - this.begin;
          this.visuTool.addPoint(indexClean / 1000.0, this.counter
                  / (this.end - this.begin) * 1000);
          this.cleanVisuTool.addPoint(indexClean / 1000.0, this.maxY);
         this.restartVisuTool.addInvisiblePoint(indexClean, 0);
     }
 
     @Override
     public void restarting() {
         this.end = System.currentTimeMillis();
         long indexRestart = this.index + this.end - this.begin;
         double y = this.counter / (this.end - this.begin) * 1000;
         this.visuTool.addPoint(indexRestart / 1000.0, y);
         if (y > this.maxY) {
             this.maxY = y;
         }
         this.restartVisuTool.addPoint(indexRestart / 1000.0, this.maxY);
         this.cleanVisuTool.addInvisiblePoint(indexRestart, 0);
     }
 
     @Override
     public void start() {
         this.visuTool.init();
         this.cleanVisuTool.init();
         this.restartVisuTool.init();
 
         this.begin = System.currentTimeMillis();
         this.counter = 0;
         this.index = 0;
     }
 }