76 lines
2.8 KiB
Java
76 lines
2.8 KiB
Java
/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import dalvik.system.PathClassLoader;
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import dalvik.system.VMRuntime;
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import java.lang.ref.WeakReference;
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import java.lang.reflect.Constructor;
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import java.util.concurrent.atomic.AtomicBoolean;
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public class Main {
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static final String DEX_FILE = System.getenv("DEX_LOCATION") + "/1002-notify-startup.jar";
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static final String LIBRARY_SEARCH_PATH = System.getProperty("java.library.path");
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static AtomicBoolean completed = new AtomicBoolean(false);
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public static void main(String[] args) {
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System.loadLibrary(args[0]);
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System.out.println("Startup completed: " + hasStartupCompleted());
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Thread workerThread = new WorkerThread();
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workerThread.start();
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do {
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resetStartupCompleted();
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VMRuntime.getRuntime().notifyStartupCompleted();
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Thread.yield();
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} while (!completed.get());
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try {
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workerThread.join();
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} catch (Throwable e) {
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System.err.println(e);
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}
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System.out.println("Startup completed: " + hasStartupCompleted());
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}
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private static class WorkerThread extends Thread {
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static final int NUM_ITERATIONS = 100;
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private WeakReference<Class<?>> $noinline$loadClassInLoader() throws Exception {
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ClassLoader loader = new PathClassLoader(
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DEX_FILE, LIBRARY_SEARCH_PATH, ClassLoader.getSystemClassLoader());
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Class ret = loader.loadClass("Main");
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return new WeakReference(ret);
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}
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public void run() {
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for (int i = 0; i < NUM_ITERATIONS; ++i) {
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try {
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WeakReference<Class<?>> ref = $noinline$loadClassInLoader();
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Runtime.getRuntime().gc();
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Thread.yield();
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// Don't validate the unloading since app images will keep classes live (for now).
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} catch (Throwable e) {
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System.err.println(e);
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break;
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}
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}
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completed.set(true);
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}
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}
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private static native boolean hasStartupCompleted();
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private static native void resetStartupCompleted();
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}
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