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 android.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.SOURCE;
23
24import java.lang.annotation.Retention;
25import java.lang.annotation.Target;
26
27/**
28 * Denotes that the annotated method can be called from any thread (e.g. it is
29 * "thread safe".) If the annotated element is a class, then all methods in the
30 * class can be called from any thread.
31 * <p>
32 * The main purpose of this method is to indicate that you believe a method can
33 * be called from any thread; static tools can then check that nothing you call
34 * from within this method or class have more strict threading requirements.
35 * <p>
36 * Example:
37 *
38 * <pre>
39 * <code>
40 *  &#64;AnyThread
41 *  public void deliverResult(D data) { ... }
42 * </code>
43 * </pre>
44 *
45 * @memberDoc This method is safe to call from any thread.
46 * @hide
47 */
48@Retention(SOURCE)
49@Target({METHOD,CONSTRUCTOR,TYPE,PARAMETER})
50public @interface AnyThread {
51}
52