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With inspiration from other libraries

There is a newer version: 2.12.15

/**
 * Logback: the reliable, generic, fast and flexible logging framework.
 * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
 *
 * This program and the accompanying materials are dual-licensed under
 * either the terms of the Eclipse Public License v1.0 as published by
 * the Eclipse Foundation
 *
 *   or (per the licensee's choosing)
 *
 * under the terms of the GNU Lesser General Public License version 2.1
 * as published by the Free Software Foundation.
 */
package ch.qos.logback.core;

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

import ch.qos.logback.core.spi.LifeCycle;

/**
 * An object that manages a collection of components that implement the
 * {@link LifeCycle} interface.  Each component that is added to the manager
 * will be stopped and removed from the manager when the manager is reset.
 *
 * @author Carl Harris
 */
public class LifeCycleManager {

    private final Set components = new HashSet();

    /**
     * Registers a component with this manager.  
     * 
     * @param component the component whose life cycle is to be managed
     */
    public void register(LifeCycle component) {
        components.add(component);
    }

    /**
     * Resets this manager.
     * 
     * All registered components are stopped and removed from the manager.
     */
    public void reset() {
        for (LifeCycle component : components) {
            if (component.isStarted()) {
                component.stop();
            }
        }
        components.clear();
    }

}