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* Copyright (c) 1999-2014, Ecole des Mines de Nantes
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* modification, are permitted provided that the following conditions are met:
*
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* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
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* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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package solver.thread;
import solver.ResolutionPolicy;
import solver.Solver;
import solver.objective.ObjectiveManager;
import solver.propagation.NoPropagationEngine;
import solver.propagation.hardcoded.TwoBucketPropagationEngine;
import solver.variables.IntVar;
/**
* <br/>
*
* @author Charles Prud'homme
* @since 6 oct. 2010
*/
public class ThreadSolver extends Thread {
public Solver solver;
private long creationTime;
private boolean saf = true;
public ThreadSolver(Solver solver) {
this.creationTime -= System.nanoTime();
this.solver = solver;
}
public Solver getSolver() {
return solver;
}
@Override
public void run() {
if (solver.getEngine() == NoPropagationEngine.SINGLETON) {
solver.set(new TwoBucketPropagationEngine(solver));
}
solver.getMeasures().setReadingTimeCount(creationTime + System.nanoTime());
solver.getSearchLoop().launch(saf);
}
public void findSolution() {
solver.set(ObjectiveManager.SAT());
this.saf = true;
start();
}
public void findAllSolutions() {
solver.set(ObjectiveManager.SAT());
this.saf = false;
start();
}
public void findOptimalSolution(ResolutionPolicy policy, IntVar objective) {
if (policy == ResolutionPolicy.SATISFACTION) {
throw new UnsupportedOperationException("cannot optimize a satisfaction problem!");
}
this.saf = false;
solver.set(new ObjectiveManager<IntVar,Integer>(objective, policy, true));
start();
}
}