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 com.google.common.annotations.Beta; 018import java.lang.annotation.ElementType; 019import java.lang.annotation.Retention; 020import java.lang.annotation.RetentionPolicy; 021import java.lang.annotation.Target; 022 023/** 024 * Marks an event subscriber method as being thread-safe. This annotation indicates that EventBus 025 * may invoke the event subscriber simultaneously from multiple threads. 026 * 027 * <p>This does not mark the method, and so should be used in combination with {@link Subscribe}. 028 * 029 * @author Cliff Biffle 030 * @since 10.0 031 */ 032@Retention(RetentionPolicy.RUNTIME) 033@Target(ElementType.METHOD) 034@Beta 035public @interface AllowConcurrentEvents {}