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HawtDispatch: The libdispatch style API for Java

There is a newer version: 1.22

/**
 * Copyright (c) 2008-2009 Apple Inc. All rights reserved.
 * Copyright (C) 2009-2010, Progress Software Corporation and/or its
 * subsidiaries or affiliates.  All rights reserved.
 * 
 * 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.
 */
package org.fusesource.hawtdispatch;

/**
 * 
 * Implemented by dispatch objects that can be configured with a target queue
 * that it uses for executing the object's asynchronous tasks.
 * 
 *
 * @author Hiram Chirino
 */
public interface DispatchObject extends Suspendable {

    /**
     * 
     * Sets the target queue for this object.
     * 

     * An object's target queue is responsible for processing the object.
     * 

     * A dispatch queue's priority is inherited by its target queue. Use the
     * {@link Dispatch#getGlobalQueue()} method to obtain suitable target queue
     * of the desired priority.
     * 

     * A dispatch source's target queue specifies where its event handler and
     * cancellation handler runnables will be submitted.
     * 
     *
     * @param       queue
     * The new target queue for the object. The queue is retained, and the
     * previous one, if any, is released.
     * The result of passing NULL in this parameter is undefined.
     */
    public void setTargetQueue(DispatchQueue queue);

    /**
     * 
     * Gets the target queue for this object.
     * 
     *
     * @see #setTargetQueue(DispatchQueue)  
     * @return the target queue of this object.
     */
    public DispatchQueue getTargetQueue();
    
}