1*795d594fSAndroid Build Coastguard Worker /* 2*795d594fSAndroid Build Coastguard Worker * Copyright (C) 2017 The Android Open Source Project 3*795d594fSAndroid Build Coastguard Worker * 4*795d594fSAndroid Build Coastguard Worker * Licensed under the Apache License, Version 2.0 (the "License"); 5*795d594fSAndroid Build Coastguard Worker * you may not use this file except in compliance with the License. 6*795d594fSAndroid Build Coastguard Worker * You may obtain a copy of the License at 7*795d594fSAndroid Build Coastguard Worker * 8*795d594fSAndroid Build Coastguard Worker * http://www.apache.org/licenses/LICENSE-2.0 9*795d594fSAndroid Build Coastguard Worker * 10*795d594fSAndroid Build Coastguard Worker * Unless required by applicable law or agreed to in writing, software 11*795d594fSAndroid Build Coastguard Worker * distributed under the License is distributed on an "AS IS" BASIS, 12*795d594fSAndroid Build Coastguard Worker * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13*795d594fSAndroid Build Coastguard Worker * See the License for the specific language governing permissions and 14*795d594fSAndroid Build Coastguard Worker * limitations under the License. 15*795d594fSAndroid Build Coastguard Worker */ 16*795d594fSAndroid Build Coastguard Worker 17*795d594fSAndroid Build Coastguard Worker import java.lang.reflect.Constructor; 18*795d594fSAndroid Build Coastguard Worker 19*795d594fSAndroid Build Coastguard Worker public class Main { 20*795d594fSAndroid Build Coastguard Worker static final String DEX_FILE = 21*795d594fSAndroid Build Coastguard Worker System.getenv("DEX_LOCATION") + "/661-classloader-allocator-ex.jar"; 22*795d594fSAndroid Build Coastguard Worker static final String LIBRARY_SEARCH_PATH = System.getProperty("java.library.path"); 23*795d594fSAndroid Build Coastguard Worker doUnloading()24*795d594fSAndroid Build Coastguard Worker private static void doUnloading() { 25*795d594fSAndroid Build Coastguard Worker // Stop the JIT to ensure its threads and work queue are not keeping classes 26*795d594fSAndroid Build Coastguard Worker // artifically alive. 27*795d594fSAndroid Build Coastguard Worker stopJit(); 28*795d594fSAndroid Build Coastguard Worker // Do multiple GCs to prevent rare flakiness if some other thread is keeping the 29*795d594fSAndroid Build Coastguard Worker // classloader live. 30*795d594fSAndroid Build Coastguard Worker for (int i = 0; i < 5; ++i) { 31*795d594fSAndroid Build Coastguard Worker Runtime.getRuntime().gc(); 32*795d594fSAndroid Build Coastguard Worker } 33*795d594fSAndroid Build Coastguard Worker startJit(); 34*795d594fSAndroid Build Coastguard Worker } 35*795d594fSAndroid Build Coastguard Worker main(String[] args)36*795d594fSAndroid Build Coastguard Worker public static void main(String[] args) throws Exception { 37*795d594fSAndroid Build Coastguard Worker System.loadLibrary(args[0]); 38*795d594fSAndroid Build Coastguard Worker loadClass(); 39*795d594fSAndroid Build Coastguard Worker doUnloading(); 40*795d594fSAndroid Build Coastguard Worker // fetchProfiles iterate over the ProfilingInfo, we used to crash in the presence 41*795d594fSAndroid Build Coastguard Worker // of unloaded copied methods. 42*795d594fSAndroid Build Coastguard Worker fetchProfiles(); 43*795d594fSAndroid Build Coastguard Worker } 44*795d594fSAndroid Build Coastguard Worker loadClass()45*795d594fSAndroid Build Coastguard Worker public static void loadClass() throws Exception { 46*795d594fSAndroid Build Coastguard Worker Class<?> pathClassLoader = Class.forName("dalvik.system.PathClassLoader"); 47*795d594fSAndroid Build Coastguard Worker if (pathClassLoader == null) { 48*795d594fSAndroid Build Coastguard Worker throw new AssertionError("Couldn't find path class loader class"); 49*795d594fSAndroid Build Coastguard Worker } 50*795d594fSAndroid Build Coastguard Worker Constructor<?> constructor = 51*795d594fSAndroid Build Coastguard Worker pathClassLoader.getDeclaredConstructor(String.class, String.class, ClassLoader.class); 52*795d594fSAndroid Build Coastguard Worker ClassLoader loader = (ClassLoader) constructor.newInstance( 53*795d594fSAndroid Build Coastguard Worker DEX_FILE, LIBRARY_SEARCH_PATH, ClassLoader.getSystemClassLoader()); 54*795d594fSAndroid Build Coastguard Worker Class<?> otherClass = loader.loadClass("p1.OtherClass"); 55*795d594fSAndroid Build Coastguard Worker ensureJitCompiled(otherClass, "foo"); 56*795d594fSAndroid Build Coastguard Worker } 57*795d594fSAndroid Build Coastguard Worker ensureJitCompiled(Class<?> cls, String methodName)58*795d594fSAndroid Build Coastguard Worker public static native void ensureJitCompiled(Class<?> cls, String methodName); fetchProfiles()59*795d594fSAndroid Build Coastguard Worker public static native void fetchProfiles(); stopJit()60*795d594fSAndroid Build Coastguard Worker public static native void stopJit(); startJit()61*795d594fSAndroid Build Coastguard Worker public static native void startJit(); 62*795d594fSAndroid Build Coastguard Worker } 63