1/* 2 * Copyright (C) 2007 The Guava Authors 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.google.common.eventbus; 18 19import java.lang.reflect.InvocationTargetException; 20import java.lang.reflect.Method; 21 22/** 23 * Wraps a single-argument subscriber method on a specific object, and ensures 24 * that only one thread may enter the method at a time. 25 * 26 * <p>Beyond synchronization, this class behaves identically to 27 * {@link EventSubscriber}. 28 * 29 * @author Cliff Biffle 30 */ 31final class SynchronizedEventSubscriber extends EventSubscriber { 32 /** 33 * Creates a new SynchronizedEventSubscriber to wrap {@code method} on 34 * {@code target}. 35 * 36 * @param target object to which the method applies. 37 * @param method subscriber method. 38 */ 39 public SynchronizedEventSubscriber(Object target, Method method) { 40 super(target, method); 41 } 42 43 @Override 44 public void handleEvent(Object event) throws InvocationTargetException { 45 // https://code.google.com/p/guava-libraries/issues/detail?id=1403 46 synchronized (this) { 47 super.handleEvent(event); 48 } 49 } 50} 51