1/*
2 * Copyright (C) 2016 The Android Open Source Project
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 */
16package androidx.annotation;
17
18import static java.lang.annotation.ElementType.CONSTRUCTOR;
19import static java.lang.annotation.ElementType.METHOD;
20import static java.lang.annotation.ElementType.PARAMETER;
21import static java.lang.annotation.ElementType.TYPE;
22import static java.lang.annotation.RetentionPolicy.CLASS;
23
24import java.lang.annotation.Documented;
25import java.lang.annotation.Retention;
26import java.lang.annotation.Target;
27
28/**
29 * Denotes that the annotated method can be called from any thread (e.g. it is "thread safe".)
30 * If the annotated element is a class, then all methods in the class can be called
31 * from any thread.
32 * <p>
33 * The main purpose of this method is to indicate that you believe a method can be called
34 * from any thread; static tools can then check that nothing you call from within this method
35 * or class have more strict threading requirements.
36 * <p>
37 * Example:
38 * <pre><code>
39 *  &#64;AnyThread
40 *  public void deliverResult(D data) { ... }
41 * </code></pre>
42 */
43@Documented
44@Retention(CLASS)
45@Target({METHOD,CONSTRUCTOR,TYPE,PARAMETER})
46public @interface AnyThread {
47}
48