001    /**
002     * Copyright (c) 2008-2009 Apple Inc. All rights reserved.
003     * Copyright (C) 2012 FuseSource, Inc.
004     * http://fusesource.com
005     *
006     * Licensed under the Apache License, Version 2.0 (the "License");
007     * you may not use this file except in compliance with the License.
008     * You may obtain a copy of the License at
009     *
010     *    http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing, software
013     * distributed under the License is distributed on an "AS IS" BASIS,
014     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015     * See the License for the specific language governing permissions and
016     * limitations under the License.
017     */
018    
019    package org.fusesource.hawtdispatch;
020    
021    /**
022     * <p>
023     * Defines the supported global/concurrent queue priorities.
024     * </p>
025     *
026     * @author <a href="http://hiramchirino.com">Hiram Chirino</a>
027     */
028    public enum DispatchPriority {
029        /**
030         * Items dispatched to the queue will run at high priority,
031         * i.e. the queue will be scheduled for execution before
032         * any default priority or low priority queue.
033         */
034        HIGH,
035        /**
036         * Items dispatched to the queue will run at the default
037         * priority, i.e. the queue will be scheduled for execution
038         * after all high priority queues have been scheduled, but
039         * before any low priority queues have been scheduled.
040         */
041        DEFAULT,
042        /**
043         * Items dispatched to the queue will run at low priority,
044         * i.e. the queue will be scheduled for execution after all
045         * default priority and high priority queues have been
046         * scheduled.
047         */
048        LOW;
049    }