001/* 002 * Copyright (C) 2007 The Guava Authors 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 005 * in compliance with the License. You may obtain a copy of the License at 006 * 007 * http://www.apache.org/licenses/LICENSE-2.0 008 * 009 * Unless required by applicable law or agreed to in writing, software distributed under the License 010 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express 011 * or implied. See the License for the specific language governing permissions and limitations under 012 * the License. 013 */ 014 015package com.google.common.eventbus; 016 017import java.lang.annotation.ElementType; 018import java.lang.annotation.Retention; 019import java.lang.annotation.RetentionPolicy; 020import java.lang.annotation.Target; 021 022/** 023 * Marks an event subscriber method as being thread-safe. This annotation indicates that EventBus 024 * may invoke the event subscriber simultaneously from multiple threads. 025 * 026 * <p>This does not mark the method, and so should be used in combination with {@link Subscribe}. 027 * 028 * @author Cliff Biffle 029 * @since 10.0 030 */ 031@Retention(RetentionPolicy.RUNTIME) 032@Target(ElementType.METHOD) 033@ElementTypesAreNonnullByDefault 034public @interface AllowConcurrentEvents {}