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 17 package com.google.common.eventbus; 18 19 import com.google.common.annotations.Beta; 20 import java.lang.annotation.ElementType; 21 import java.lang.annotation.Retention; 22 import java.lang.annotation.RetentionPolicy; 23 import java.lang.annotation.Target; 24 25 /** 26 * Marks an event handling method as being thread-safe. This annotation 27 * indicates that EventBus may invoke the event handler simultaneously from 28 * multiple threads. 29 * 30 * <p>This does not mark the method as an event handler, and so should be used 31 * in combination with {@link Subscribe}. 32 * 33 * @author Cliff Biffle 34 * @since 10.0 35 */ 36 @Retention(RetentionPolicy.RUNTIME) 37 @Target(ElementType.METHOD) 38 @Beta 39 public @interface AllowConcurrentEvents { 40 } 41