net.sf.opendse.optimization.modifier.RedundantCommunicationModifier Maven / Gradle / Ivy

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The optimization module of OpenDSE

There is a newer version: 1.8

/*******************************************************************************
 * Copyright (c) 2015 OpenDSE
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
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package net.sf.opendse.optimization.modifier;

import java.util.Collection;
import java.util.HashSet;
import java.util.Set;

import net.sf.opendse.model.Application;
import net.sf.opendse.model.Dependency;
import net.sf.opendse.model.Mappings;
import net.sf.opendse.model.Models;
import net.sf.opendse.model.Resource;
import net.sf.opendse.model.Specification;
import net.sf.opendse.model.Task;

public class RedundantCommunicationModifier implements Modifier {

	@Override
	public void modify(Specification specification) {
		Application application = specification.getApplication();
		Mappings mappings = specification.getMappings();

		Set removeM = new HashSet();
		for (Task m : Models.filterCommunications(application)) {
			Collection pred = application.getPredecessors(m);
			Collection succ = application.getSuccessors(m);

			for (Task ti : pred) {
				for (Task tj : succ) {
					if (mappings.getTargets(ti).equals(mappings.getTargets(tj))) {
						Dependency d = application.findEdge(m, tj);
						application.removeEdge(d);
						application.addEdge(d, ti, tj);
					}
				}
			}
			if (application.getSuccessorCount(m) == 0) {
				removeM.add(m);
			}
		}

		for (Task m : removeM) {
			application.removeVertex(m);
		}
	}

}