CallbackLoop.java

/**
 * Copyright 2011-2013 Universite Joseph Fourier, LIG, ADELE team
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *   limitations under the License.
 *
 * CallbackLoop.java - 19 août 2013
 */
package fr.imag.adele.apam.pax.test.eldritch.lock;

/**
 * This one cause an infinite loop between two callbacks sets on fields ApAM calls
 * It stacks method calls until Stack overflow that is silently catched by ApAM
 * 
 * @author thibaud
 * 
 */
public class CallbackLoop {
    private int a;
    private int b;

    public CallbackLoop() {
	a=0;
	b=0;

    }

    public void aChanged() {
	if (b >= 0 && b < 100)
	    b = a + 1;
	else
	    b = 0;
    }

    public void bChanged() {
	if (a >= 0 && a < 100)
	    a = b + 1;
	else
	    a = 0;
    }

}