1 /* 2 * Copyright (C) 2023 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.ravenwood.annotation; 17 18 import static java.lang.annotation.ElementType.TYPE; 19 20 import java.lang.annotation.Retention; 21 import java.lang.annotation.RetentionPolicy; 22 import java.lang.annotation.Target; 23 24 /** 25 * Set a "class load hook" for the annotated class. 26 * 27 * Add this with a fully-specified method name (e.g. {@code "com.package.Class.methodName"}) 28 * of a callback to get a callback at the class load time. 29 * 30 * The method must be {@code public static} with a single argument that takes {@link Class}. 31 * 32 * Typically, this is used with {@link #LIBANDROID_LOADING_HOOK}, which will load the necessary 33 * native libraries. 34 * 35 * @hide 36 */ 37 @Target({TYPE}) 38 @Retention(RetentionPolicy.CLASS) 39 public @interface RavenwoodClassLoadHook { value()40 String value(); 41 42 /** 43 * Class load hook that loads <code>libandroid_runtime</code>. 44 */ 45 public static String LIBANDROID_LOADING_HOOK 46 = "com.android.platform.test.ravenwood.runtimehelper.ClassLoadHook.onClassLoaded"; 47 } 48