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 */ 16 package android.annotation; 17 18 import static java.lang.annotation.ElementType.CONSTRUCTOR; 19 import static java.lang.annotation.ElementType.METHOD; 20 import static java.lang.annotation.ElementType.TYPE; 21 import static java.lang.annotation.RetentionPolicy.SOURCE; 22 23 import java.lang.annotation.Retention; 24 import java.lang.annotation.Target; 25 26 /** 27 * Denotes that the annotated method can be called from any thread (e.g. it is 28 * "thread safe".) If the annotated element is a class, then all methods in the 29 * class can be called from any thread. 30 * <p> 31 * The main purpose of this method is to indicate that you believe a method can 32 * be called from any thread; static tools can then check that nothing you call 33 * from within this method or class have more strict threading requirements. 34 * <p> 35 * Example: 36 * 37 * <pre> 38 * <code> 39 * @AnyThread 40 * public void deliverResult(D data) { ... } 41 * </code> 42 * </pre> 43 * 44 * @memberDoc This method is safe to call from any thread. 45 * @hide 46 */ 47 @Retention(SOURCE) 48 @Target({METHOD,CONSTRUCTOR,TYPE}) 49 public @interface AnyThread { 50 } 51