1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, 13 * software distributed under the License is distributed on an 14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 15 * KIND, either express or implied. See the License for the 16 * specific language governing permissions and limitations 17 * under the License. 18 * 19 */ 20 package org.apache.mina.filter.executor; 21 22 import java.util.EventListener; 23 import java.util.concurrent.ThreadPoolExecutor; 24 25 import org.apache.mina.common.IoEvent; 26 27 /** 28 * Listenes and filters all event queue operations occurring in 29 * {@link OrderedThreadPoolExecutor} and {@link UnorderedThreadPoolExecutor}. 30 * 31 * @author The Apache MINA Project (dev@mina.apache.org) 32 * @version $Rev: 593426 $, $Date: 2007-11-08 23:22:24 -0700 (Thu, 08 Nov 2007) $ 33 */ 34 public interface IoEventQueueHandler extends EventListener { 35 /** 36 * Returns <tt>true</tt> if and only if the specified <tt>event</tt> is 37 * allowed to be offered to the event queue. The <tt>event</tt> is dropped 38 * if <tt>false</tt> is returned. 39 */ 40 boolean accept(ThreadPoolExecutor executor, IoEvent event); 41 42 /** 43 * Invoked after the specified <tt>event</tt> has been offered to the 44 * event queue. 45 */ 46 void offered(ThreadPoolExecutor executor, IoEvent event); 47 48 /** 49 * Invoked after the specified <tt>event</tt> has been polled from the 50 * event queue. 51 */ 52 void polled(ThreadPoolExecutor executor, IoEvent event); 53 }