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