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 com.google.common.annotations.Beta;
20import java.lang.annotation.ElementType;
21import java.lang.annotation.Retention;
22import java.lang.annotation.RetentionPolicy;
23import 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
39public @interface AllowConcurrentEvents {
40}
41